Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1367411 > unrolled thread

[PATCH 00/43] Lustre IO stack simplifications and cleanups

Back to article view | Back to linux.kernel

Contents

  [PATCH 00/43] Lustre IO stack simplifications and cleanups green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 04/43] staging/lustre: Reintroduce global env list green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 10/43] staging/lustre/osc: add weight function for DLM lock green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 20/43] staging/lustre: update comments after cl_lock simplification green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 02/43] staging/lustre: Get rid of CFS_PAGE_MASK green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 17/43] staging/lustre: Remove struct ll_iattr green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 08/43] staging/lustre/obdclass: Add a preallocated percpu cl_env green@linuxhacker.ru - 2016-03-30 18:50 +0200
    [PATCH 25/43] staging/lustre/llite: rename ccc_device to vvp_device green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 28/43] staging/lustre/llite: rename ccc_lock to vvp_lock green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 43/43] staging/lustre/ldlm: restore the ELC for enqueue green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 31/43] staging/lustre/llite: use vui prefix for struct vvp_io members green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 15/43] staging/lustre/obd: remove struct client_obd_lock green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 30/43] staging/lustre/llite: merge ccc_io and vvp_io green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 29/43] staging/lustre:llite: remove struct ll_ra_read green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 37/43] staging/lustre/llite: Remove ccc_global_{init,fini}() green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 38/43] staging/lustre/llite: Move ll_dirent_type_get and make it static green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 16/43] staging/lustre/llite: remove some cl wrappers green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 27/43] staging/lustre/llite: rename ccc_page to vvp_page green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 41/43] staging/lustre/ldlm: ELC picks locks in a safer policy green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 32/43] staging/lustre/llite: move vvp_io functions to vvp_io.c green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 40/43] staging/lustre/llite: Remove unused vui_local_lock field green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 42/43] staging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy() green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 33/43] staging/lustre/llite: rename ccc_req to vvp_req green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 36/43] staging/lustre/llite: rename struct ccc_thread_info to vvp_thread_info green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 23/43] staging/lustre/llite: make sure we do cl_page_clip on the last page green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 14/43] staging/lustre/lmv: remove lmv_init_{lock,unlock}() green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 22/43] staging/lustre/llite: deadlock for page write green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 18/43] staging/lustre/clio: generalize cl_sync_io green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 39/43] staging/lustre/llite: Move several declarations to llite_internal.h green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 35/43] staging/lustre/llite: Rename struct vvp_thread_info to ll_thread_info green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 34/43] staging/lustre/llite: Rename struct ccc_grouplock to ll_grouplock green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 24/43] staging/lustre/llite: merge lclient.h into llite/vvp_internal.h green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 21/43] staging/lustre/llite: clip page correctly for vvp_io_commit_sync green@linuxhacker.ru - 2016-03-30 19:00 +0200
    [PATCH 12/43] staging/lustre/clio: optimize read ahead code green@linuxhacker.ru - 2016-03-30 19:10 +0200
    [PATCH 05/43] staging/lustre/osc: Adjustment on osc LRU for performance green@linuxhacker.ru - 2016-03-30 19:10 +0200
    [PATCH 13/43] staging/lustre/llite: remove lli_lvb green@linuxhacker.ru - 2016-03-30 19:10 +0200
    [PATCH 06/43] staging/lustre/osc: to drop LRU pages with cl_lru_work green@linuxhacker.ru - 2016-03-30 19:10 +0200

Page 1 of 2  [1] 2  Next page →

#1367411 — [PATCH 00/43] Lustre IO stack simplifications and cleanups

From: Oleg Drokin <green@linuxhacker.ru>

This large body of patches mostly deals with Lustre IO stack
simplifications and related cleanups.
In particular the whole cl_page and cl_lock stuff is reduced to
basically nothing.
The simplifications remove about 5K lines of code and the other 5k
are mostly due to shuffling code around and renaming stuff
to get rid of now defunct layers.

Bobi Jam (1):
  staging/lustre: update comments after cl_lock simplification

Jinshan Xiong (14):
  staging/lustre: Reintroduce global env list
  staging/lustre/osc: Adjustment on osc LRU for performance
  staging/lustre/osc: to drop LRU pages with cl_lru_work
  staging/lustre/clio: collapse layer of cl_page
  staging/lustre/obdclass: Add a preallocated percpu cl_env
  staging/lustre/clio: add pages into writeback cache in batches
  staging/lustre/osc: add weight function for DLM lock
  staging/lustre/clio: remove stackable cl_page completely
  staging/lustre/clio: optimize read ahead code
  staging/lustre/clio: generalize cl_sync_io
  staging/lustre/clio: cl_lock simplification
  staging/lustre/llite: clip page correctly for vvp_io_commit_sync
  staging/lustre/llite: deadlock for page write
  staging/lustre/ldlm: ELC picks locks in a safer policy

John Hammond (5):
  staging/lustre/llite: Rename struct ccc_grouplock to ll_grouplock
  staging/lustre/llite: Rename struct vvp_thread_info to ll_thread_info
  staging/lustre/llite: rename struct ccc_thread_info to vvp_thread_info
  staging/lustre/llite: Remove ccc_global_{init,fini}()
  staging/lustre/llite: Move several declarations to llite_internal.h

John L. Hammond (15):
  staging/lustre: merge lclient/*.c into llite/
  staging/lustre/llite: remove lli_lvb
  staging/lustre/lmv: remove lmv_init_{lock,unlock}()
  staging/lustre/obd: remove struct client_obd_lock
  staging/lustre/llite: remove some cl wrappers
  staging/lustre/llite: merge lclient.h into llite/vvp_internal.h
  staging/lustre/llite: rename ccc_device to vvp_device
  staging/lustre/llite: rename ccc_object to vvp_object
  staging/lustre/llite: rename ccc_page to vvp_page
  staging/lustre/llite: rename ccc_lock to vvp_lock
  staging/lustre:llite: remove struct ll_ra_read
  staging/lustre/llite: merge ccc_io and vvp_io
  staging/lustre/llite: use vui prefix for struct vvp_io members
  staging/lustre/llite: move vvp_io functions to vvp_io.c
  staging/lustre/llite: rename ccc_req to vvp_req

Li Dongyang (1):
  staging/lustre/llite: make sure we do cl_page_clip on the last page

Niu Yawei (1):
  staging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy()

Oleg Drokin (5):
  staging/lustre/obdclass: limit lu_site hash table size
  staging/lustre: Get rid of CFS_PAGE_MASK
  staging/lustre: Remove struct ll_iattr
  staging/lustre/llite: Move ll_dirent_type_get and make it static
  staging/lustre/llite: Remove unused vui_local_lock field

Vitaly Fertman (1):
  staging/lustre/ldlm: restore the ELC for enqueue

 .../lustre/include/linux/libcfs/linux/linux-mem.h  |    1 -
 .../lustre/lnet/libcfs/linux/linux-crypto.c        |    2 +-
 drivers/staging/lustre/lnet/selftest/brw_test.c    |    2 +-
 drivers/staging/lustre/lustre/fld/fld_request.c    |   14 +-
 drivers/staging/lustre/lustre/include/cl_object.h  |  962 ++-------
 drivers/staging/lustre/lustre/include/lclient.h    |  408 ----
 drivers/staging/lustre/lustre/include/linux/obd.h  |  125 --
 .../lustre/lustre/include/lustre/lustre_idl.h      |    2 +
 drivers/staging/lustre/lustre/include/lustre_dlm.h |   14 +-
 drivers/staging/lustre/lustre/include/obd.h        |   14 +-
 drivers/staging/lustre/lustre/lclient/glimpse.c    |  270 ---
 drivers/staging/lustre/lustre/lclient/lcommon_cl.c | 1203 -----------
 .../staging/lustre/lustre/lclient/lcommon_misc.c   |  200 --
 drivers/staging/lustre/lustre/ldlm/ldlm_internal.h |    7 +-
 drivers/staging/lustre/lustre/ldlm/ldlm_lib.c      |    5 +-
 drivers/staging/lustre/lustre/ldlm/ldlm_lock.c     |    3 +-
 drivers/staging/lustre/lustre/ldlm/ldlm_request.c  |   74 +-
 drivers/staging/lustre/lustre/ldlm/ldlm_resource.c |    1 +
 drivers/staging/lustre/lustre/llite/Makefile       |    5 +-
 drivers/staging/lustre/lustre/llite/dir.c          |   24 +-
 drivers/staging/lustre/lustre/llite/file.c         |  133 +-
 drivers/staging/lustre/lustre/llite/glimpse.c      |  255 +++
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   |  327 +++
 drivers/staging/lustre/lustre/llite/lcommon_misc.c |  201 ++
 drivers/staging/lustre/lustre/llite/llite_close.c  |   28 +-
 .../staging/lustre/lustre/llite/llite_internal.h   |  244 +--
 drivers/staging/lustre/lustre/llite/llite_lib.c    |   21 +-
 drivers/staging/lustre/lustre/llite/llite_mmap.c   |   38 +-
 drivers/staging/lustre/lustre/llite/lproc_llite.c  |   10 +-
 drivers/staging/lustre/lustre/llite/rw.c           |  363 ++--
 drivers/staging/lustre/lustre/llite/rw26.c         |  304 ++-
 drivers/staging/lustre/lustre/llite/super25.c      |   14 +-
 drivers/staging/lustre/lustre/llite/vvp_dev.c      |  253 ++-
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  332 ++-
 drivers/staging/lustre/lustre/llite/vvp_io.c       |  925 +++++----
 drivers/staging/lustre/lustre/llite/vvp_lock.c     |   53 +-
 drivers/staging/lustre/lustre/llite/vvp_object.c   |  141 +-
 drivers/staging/lustre/lustre/llite/vvp_page.c     |  209 +-
 drivers/staging/lustre/lustre/llite/vvp_req.c      |  121 ++
 drivers/staging/lustre/lustre/lmv/lmv_internal.h   |    3 -
 drivers/staging/lustre/lustre/lmv/lmv_obd.c        |   26 +-
 .../staging/lustre/lustre/lov/lov_cl_internal.h    |  105 +-
 drivers/staging/lustre/lustre/lov/lov_dev.c        |    5 +-
 drivers/staging/lustre/lustre/lov/lov_internal.h   |    2 +
 drivers/staging/lustre/lustre/lov/lov_io.c         |  229 +--
 drivers/staging/lustre/lustre/lov/lov_lock.c       |  996 +--------
 drivers/staging/lustre/lustre/lov/lov_obd.c        |    1 -
 drivers/staging/lustre/lustre/lov/lov_object.c     |   48 +-
 drivers/staging/lustre/lustre/lov/lov_offset.c     |   13 +
 drivers/staging/lustre/lustre/lov/lov_page.c       |  183 +-
 drivers/staging/lustre/lustre/lov/lovsub_lock.c    |  383 ----
 drivers/staging/lustre/lustre/lov/lovsub_page.c    |    4 +-
 drivers/staging/lustre/lustre/mdc/lproc_mdc.c      |    8 +-
 drivers/staging/lustre/lustre/mdc/mdc_lib.c        |   21 +-
 drivers/staging/lustre/lustre/mdc/mdc_request.c    |    4 +-
 drivers/staging/lustre/lustre/obdclass/cl_io.c     |  416 ++--
 drivers/staging/lustre/lustre/obdclass/cl_lock.c   | 2152 +-------------------
 drivers/staging/lustre/lustre/obdclass/cl_object.c |  294 ++-
 drivers/staging/lustre/lustre/obdclass/cl_page.c   |  654 +-----
 drivers/staging/lustre/lustre/obdclass/class_obd.c |    2 +-
 drivers/staging/lustre/lustre/obdclass/lu_object.c |    4 +-
 drivers/staging/lustre/lustre/obdclass/obdo.c      |    3 +-
 .../staging/lustre/lustre/obdecho/echo_client.c    |  115 +-
 drivers/staging/lustre/lustre/osc/lproc_osc.c      |   50 +-
 drivers/staging/lustre/lustre/osc/osc_cache.c      |  378 +++-
 .../staging/lustre/lustre/osc/osc_cl_internal.h    |  137 +-
 drivers/staging/lustre/lustre/osc/osc_internal.h   |   23 +-
 drivers/staging/lustre/lustre/osc/osc_io.c         |  279 +--
 drivers/staging/lustre/lustre/osc/osc_lock.c       | 1693 ++++++---------
 drivers/staging/lustre/lustre/osc/osc_object.c     |   35 +-
 drivers/staging/lustre/lustre/osc/osc_page.c       |  513 +++--
 drivers/staging/lustre/lustre/osc/osc_request.c    |  376 ++--
 drivers/staging/lustre/lustre/ptlrpc/ptlrpcd.c     |   16 +-
 drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c    |    2 +-
 drivers/staging/lustre/lustre/ptlrpc/sec_plain.c   |    2 +-
 75 files changed, 5713 insertions(+), 10770 deletions(-)
 delete mode 100644 drivers/staging/lustre/lustre/include/lclient.h
 delete mode 100644 drivers/staging/lustre/lustre/include/linux/obd.h
 delete mode 100644 drivers/staging/lustre/lustre/lclient/glimpse.c
 delete mode 100644 drivers/staging/lustre/lustre/lclient/lcommon_cl.c
 delete mode 100644 drivers/staging/lustre/lustre/lclient/lcommon_misc.c
 create mode 100644 drivers/staging/lustre/lustre/llite/glimpse.c
 create mode 100644 drivers/staging/lustre/lustre/llite/lcommon_cl.c
 create mode 100644 drivers/staging/lustre/lustre/llite/lcommon_misc.c
 create mode 100644 drivers/staging/lustre/lustre/llite/vvp_req.c

-- 
2.1.0

[toc] | [next] | [standalone]

#1367414 — [PATCH 04/43] staging/lustre: Reintroduce global env list

From: Jinshan Xiong <jinshan.xiong@intel.com>

This reverts a patch that was merged before lustre client
was introduced into the staging tree, so it's not in the history.

The performance dropped a lot when memory reclaim process kicked
in as ll_releasepage() was called to destroy lustre pages. It turned
out that big overhead to allocate cl_env and keys on the fly so we
have to revert this patch.

The original problem for the reverted patch would be solved in a
follow on patch instead.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7888
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |  1 +
 drivers/staging/lustre/lustre/llite/lcommon_misc.c |  3 +-
 drivers/staging/lustre/lustre/llite/llite_lib.c    |  2 +
 drivers/staging/lustre/lustre/obdclass/cl_object.c | 90 ++++++++++++++++++++--
 drivers/staging/lustre/lustre/obdclass/lu_object.c |  2 +
 5 files changed, 92 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index fb971de..e611f79 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -3241,6 +3241,7 @@ void *cl_env_reenter(void);
 void cl_env_reexit(void *cookie);
 void cl_env_implant(struct lu_env *env, int *refcheck);
 void cl_env_unplant(struct lu_env *env, int *refcheck);
+unsigned int cl_env_cache_purge(unsigned int nr);
 
 /** @} cl_env */
 
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_misc.c b/drivers/staging/lustre/lustre/llite/lcommon_misc.c
index d80bcedd..f68c368 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_misc.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_misc.c
@@ -146,10 +146,11 @@ int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock,
 
 	rc = cl_io_init(env, io, CIT_MISC, io->ci_obj);
 	if (rc) {
+		cl_io_fini(env, io);
+		cl_env_put(env, &refcheck);
 		/* Does not make sense to take GL for released layout */
 		if (rc > 0)
 			rc = -ENOTSUPP;
-		cl_env_put(env, &refcheck);
 		return rc;
 	}
 
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 6d6bb33..673d31e 100644
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -999,6 +999,8 @@ void ll_put_super(struct super_block *sb)
 
 	lustre_common_put_super(sb);
 
+	cl_env_cache_purge(~0);
+
 	module_put(THIS_MODULE);
 } /* client_put_super */
 
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
index 43e299d..0772706 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
@@ -492,6 +492,13 @@ EXPORT_SYMBOL(cl_site_stats_print);
  * bz20044, bz22683.
  */
 
+static LIST_HEAD(cl_envs);
+static unsigned int cl_envs_cached_nr;
+static unsigned int cl_envs_cached_max = 128; /* XXX: prototype: arbitrary limit
+					       * for now.
+					       */
+static DEFINE_SPINLOCK(cl_envs_guard);
+
 struct cl_env {
 	void	     *ce_magic;
 	struct lu_env     ce_lu;
@@ -697,6 +704,39 @@ static void cl_env_fini(struct cl_env *cle)
 	kmem_cache_free(cl_env_kmem, cle);
 }
 
+static struct lu_env *cl_env_obtain(void *debug)
+{
+	struct cl_env *cle;
+	struct lu_env *env;
+
+	spin_lock(&cl_envs_guard);
+	LASSERT(equi(cl_envs_cached_nr == 0, list_empty(&cl_envs)));
+	if (cl_envs_cached_nr > 0) {
+		int rc;
+
+		cle = container_of(cl_envs.next, struct cl_env, ce_linkage);
+		list_del_init(&cle->ce_linkage);
+		cl_envs_cached_nr--;
+		spin_unlock(&cl_envs_guard);
+
+		env = &cle->ce_lu;
+		rc = lu_env_refill(env);
+		if (rc == 0) {
+			cl_env_init0(cle, debug);
+			lu_context_enter(&env->le_ctx);
+			lu_context_enter(&cle->ce_ses);
+		} else {
+			cl_env_fini(cle);
+			env = ERR_PTR(rc);
+		}
+	} else {
+		spin_unlock(&cl_envs_guard);
+		env = cl_env_new(lu_context_tags_default,
+				 lu_session_tags_default, debug);
+	}
+	return env;
+}
+
 static inline struct cl_env *cl_env_container(struct lu_env *env)
 {
 	return container_of(env, struct cl_env, ce_lu);
@@ -727,6 +767,8 @@ static struct lu_env *cl_env_peek(int *refcheck)
  * Returns lu_env: if there already is an environment associated with the
  * current thread, it is returned, otherwise, new environment is allocated.
  *
+ * Allocations are amortized through the global cache of environments.
+ *
  * \param refcheck pointer to a counter used to detect environment leaks. In
  * the usual case cl_env_get() and cl_env_put() are called in the same lexical
  * scope and pointer to the same integer is passed as \a refcheck. This is
@@ -740,10 +782,7 @@ struct lu_env *cl_env_get(int *refcheck)
 
 	env = cl_env_peek(refcheck);
 	if (!env) {
-		env = cl_env_new(lu_context_tags_default,
-				 lu_session_tags_default,
-				 __builtin_return_address(0));
-
+		env = cl_env_obtain(__builtin_return_address(0));
 		if (!IS_ERR(env)) {
 			struct cl_env *cle;
 
@@ -787,6 +826,32 @@ static void cl_env_exit(struct cl_env *cle)
 }
 
 /**
+ * Finalizes and frees a given number of cached environments. This is done to
+ * (1) free some memory (not currently hooked into VM), or (2) release
+ * references to modules.
+ */
+unsigned int cl_env_cache_purge(unsigned int nr)
+{
+	struct cl_env *cle;
+
+	spin_lock(&cl_envs_guard);
+	for (; !list_empty(&cl_envs) && nr > 0; --nr) {
+		cle = container_of(cl_envs.next, struct cl_env, ce_linkage);
+		list_del_init(&cle->ce_linkage);
+		LASSERT(cl_envs_cached_nr > 0);
+		cl_envs_cached_nr--;
+		spin_unlock(&cl_envs_guard);
+
+		cl_env_fini(cle);
+		spin_lock(&cl_envs_guard);
+	}
+	LASSERT(equi(cl_envs_cached_nr == 0, list_empty(&cl_envs)));
+	spin_unlock(&cl_envs_guard);
+	return nr;
+}
+EXPORT_SYMBOL(cl_env_cache_purge);
+
+/**
  * Release an environment.
  *
  * Decrement \a env reference counter. When counter drops to 0, nothing in
@@ -808,7 +873,22 @@ void cl_env_put(struct lu_env *env, int *refcheck)
 		cl_env_detach(cle);
 		cle->ce_debug = NULL;
 		cl_env_exit(cle);
-		cl_env_fini(cle);
+		/*
+		 * Don't bother to take a lock here.
+		 *
+		 * Return environment to the cache only when it was allocated
+		 * with the standard tags.
+		 */
+		if (cl_envs_cached_nr < cl_envs_cached_max &&
+		    (env->le_ctx.lc_tags & ~LCT_HAS_EXIT) == LCT_CL_THREAD &&
+		    (env->le_ses->lc_tags & ~LCT_HAS_EXIT) == LCT_SESSION) {
+			spin_lock(&cl_envs_guard);
+			list_add(&cle->ce_linkage, &cl_envs);
+			cl_envs_cached_nr++;
+			spin_unlock(&cl_envs_guard);
+		} else {
+			cl_env_fini(cle);
+		}
 	}
 }
 EXPORT_SYMBOL(cl_env_put);
diff --git a/drivers/staging/lustre/lustre/obdclass/lu_object.c b/drivers/staging/lustre/lustre/obdclass/lu_object.c
index 69fdcee..770d5bd 100644
--- a/drivers/staging/lustre/lustre/obdclass/lu_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/lu_object.c
@@ -55,6 +55,7 @@
 #include "../include/lustre_disk.h"
 #include "../include/lustre_fid.h"
 #include "../include/lu_object.h"
+#include "../include/cl_object.h"
 #include "../include/lu_ref.h"
 #include <linux/list.h>
 
@@ -1468,6 +1469,7 @@ void lu_context_key_quiesce(struct lu_context_key *key)
 		/*
 		 * XXX layering violation.
 		 */
+		cl_env_cache_purge(~0);
 		key->lct_tags |= LCT_QUIESCENT;
 		/*
 		 * XXX memory barrier has to go here.
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367415 — [PATCH 10/43] staging/lustre/osc: add weight function for DLM lock

From: Jinshan Xiong <jinshan.xiong@intel.com>

Use weigh_ast to decide if a lock covers any pages.
In recovery, weigh_ast will be used to decide if a DLM read lock
covers any locked pages, or it will be canceled instead being
recovered.

The problem with the original implementation is that it attached
each osc_page to an osc_lock also changed lock state to add every
pages for readahead.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7894
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_request.c  |   9 +-
 .../staging/lustre/lustre/osc/osc_cl_internal.h    |  20 ----
 drivers/staging/lustre/lustre/osc/osc_internal.h   |   3 +-
 drivers/staging/lustre/lustre/osc/osc_lock.c       | 113 +++++++++++++++------
 drivers/staging/lustre/lustre/osc/osc_page.c       |  78 +-------------
 drivers/staging/lustre/lustre/osc/osc_request.c    |   5 +-
 6 files changed, 89 insertions(+), 139 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
index c7904a9..d5968e0 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
@@ -1139,10 +1139,10 @@ static ldlm_policy_res_t ldlm_cancel_no_wait_policy(struct ldlm_namespace *ns,
 	ldlm_policy_res_t result = LDLM_POLICY_CANCEL_LOCK;
 	ldlm_cancel_for_recovery cb = ns->ns_cancel_for_recovery;
 
-	lock_res_and_lock(lock);
-
 	/* don't check added & count since we want to process all locks
-	 * from unused list
+	 * from unused list.
+	 * It's fine to not take lock to access lock->l_resource since
+	 * the lock has already been granted so it won't change.
 	 */
 	switch (lock->l_resource->lr_type) {
 	case LDLM_EXTENT:
@@ -1151,11 +1151,12 @@ static ldlm_policy_res_t ldlm_cancel_no_wait_policy(struct ldlm_namespace *ns,
 			break;
 	default:
 		result = LDLM_POLICY_SKIP_LOCK;
+		lock_res_and_lock(lock);
 		lock->l_flags |= LDLM_FL_SKIPPED;
+		unlock_res_and_lock(lock);
 		break;
 	}
 
-	unlock_res_and_lock(lock);
 	return result;
 }
 
diff --git a/drivers/staging/lustre/lustre/osc/osc_cl_internal.h b/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
index 0e06bed..cf87043 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
+++ b/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
@@ -275,16 +275,6 @@ struct osc_lock {
 	enum osc_lock_state      ols_state;
 
 	/**
-	 * How many pages are using this lock for io, currently only used by
-	 * read-ahead. If non-zero, the underlying dlm lock won't be cancelled
-	 * during recovery to avoid deadlock. see bz16774.
-	 *
-	 * \see osc_page::ops_lock
-	 * \see osc_page_addref_lock(), osc_page_putref_lock()
-	 */
-	atomic_t	     ols_pageref;
-
-	/**
 	 * true, if ldlm_lock_addref() was called against
 	 * osc_lock::ols_lock. This is used for sanity checking.
 	 *
@@ -400,16 +390,6 @@ struct osc_page {
 	 * Submit time - the time when the page is starting RPC. For debugging.
 	 */
 	unsigned long	    ops_submit_time;
-
-	/**
-	 * A lock of which we hold a reference covers this page. Only used by
-	 * read-ahead: for a readahead page, we hold it's covering lock to
-	 * prevent it from being canceled during recovery.
-	 *
-	 * \see osc_lock::ols_pageref
-	 * \see osc_page_addref_lock(), osc_page_putref_lock().
-	 */
-	struct cl_lock       *ops_lock;
 };
 
 extern struct kmem_cache *osc_lock_kmem;
diff --git a/drivers/staging/lustre/lustre/osc/osc_internal.h b/drivers/staging/lustre/lustre/osc/osc_internal.h
index 906225c..b7fb01a 100644
--- a/drivers/staging/lustre/lustre/osc/osc_internal.h
+++ b/drivers/staging/lustre/lustre/osc/osc_internal.h
@@ -141,6 +141,7 @@ int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
 int osc_lru_reclaim(struct client_obd *cli);
 
 extern spinlock_t osc_ast_guard;
+unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock);
 
 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 
@@ -181,8 +182,6 @@ static inline struct osc_device *obd2osc_dev(const struct obd_device *d)
 	return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev);
 }
 
-int osc_dlm_lock_pageref(struct ldlm_lock *dlm);
-
 extern struct kmem_cache *osc_quota_kmem;
 struct osc_quota_info {
 	/** linkage for quota hash table */
diff --git a/drivers/staging/lustre/lustre/osc/osc_lock.c b/drivers/staging/lustre/lustre/osc/osc_lock.c
index 3a8a6d1..978b6ea 100644
--- a/drivers/staging/lustre/lustre/osc/osc_lock.c
+++ b/drivers/staging/lustre/lustre/osc/osc_lock.c
@@ -51,8 +51,6 @@
  *  @{
  */
 
-#define _PAGEREF_MAGIC  (-10000000)
-
 /*****************************************************************************
  *
  * Type conversions.
@@ -248,8 +246,6 @@ static void osc_lock_fini(const struct lu_env *env,
 	 */
 	osc_lock_unhold(ols);
 	LASSERT(!ols->ols_lock);
-	LASSERT(atomic_read(&ols->ols_pageref) == 0 ||
-		atomic_read(&ols->ols_pageref) == _PAGEREF_MAGIC);
 
 	kmem_cache_free(osc_lock_kmem, ols);
 }
@@ -895,11 +891,88 @@ static int osc_ldlm_glimpse_ast(struct ldlm_lock *dlmlock, void *data)
 	return result;
 }
 
-static unsigned long osc_lock_weigh(const struct lu_env *env,
-				    const struct cl_lock_slice *slice)
+static int weigh_cb(const struct lu_env *env, struct cl_io *io,
+		    struct osc_page *ops, void *cbdata)
 {
-	/* TODO: check how many pages are covered by this lock */
-	return cl2osc(slice->cls_obj)->oo_npages;
+	struct cl_page *page = ops->ops_cl.cpl_page;
+
+	if (cl_page_is_vmlocked(env, page)) {
+		(*(unsigned long *)cbdata)++;
+		return CLP_GANG_ABORT;
+	}
+
+	return CLP_GANG_OKAY;
+}
+
+static unsigned long osc_lock_weight(const struct lu_env *env,
+				     const struct osc_lock *ols)
+{
+	struct cl_io *io = &osc_env_info(env)->oti_io;
+	struct cl_lock_descr *descr = &ols->ols_cl.cls_lock->cll_descr;
+	struct cl_object *obj = ols->ols_cl.cls_obj;
+	unsigned long npages = 0;
+	int result;
+
+	io->ci_obj = cl_object_top(obj);
+	io->ci_ignore_layout = 1;
+	result = cl_io_init(env, io, CIT_MISC, io->ci_obj);
+	if (result != 0)
+		return result;
+
+	do {
+		result = osc_page_gang_lookup(env, io, cl2osc(obj),
+					      descr->cld_start, descr->cld_end,
+					      weigh_cb, (void *)&npages);
+		if (result == CLP_GANG_ABORT)
+			break;
+		if (result == CLP_GANG_RESCHED)
+			cond_resched();
+	} while (result != CLP_GANG_OKAY);
+	cl_io_fini(env, io);
+
+	return npages;
+}
+
+/**
+ * Get the weight of dlm lock for early cancellation.
+ */
+unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock)
+{
+	struct cl_env_nest       nest;
+	struct lu_env           *env;
+	struct osc_lock         *lock;
+	unsigned long            weight;
+
+	might_sleep();
+	/*
+	 * osc_ldlm_weigh_ast has a complex context since it might be called
+	 * because of lock canceling, or from user's input. We have to make
+	 * a new environment for it. Probably it is implementation safe to use
+	 * the upper context because cl_lock_put don't modify environment
+	 * variables. But just in case ..
+	 */
+	env = cl_env_nested_get(&nest);
+	if (IS_ERR(env))
+		/* Mostly because lack of memory, do not eliminate this lock */
+		return 1;
+
+	LASSERT(dlmlock->l_resource->lr_type == LDLM_EXTENT);
+	lock = osc_ast_data_get(dlmlock);
+	if (!lock) {
+		/* cl_lock was destroyed because of memory pressure.
+		 * It is much reasonable to assign this type of lock
+		 * a lower cost.
+		 */
+		weight = 0;
+		goto out;
+	}
+
+	weight = osc_lock_weight(env, lock);
+	osc_ast_data_put(env, lock);
+
+out:
+	cl_env_nested_put(&nest, env);
+	return weight;
 }
 
 static void osc_lock_build_einfo(const struct lu_env *env,
@@ -1468,7 +1541,6 @@ static const struct cl_lock_operations osc_lock_ops = {
 	.clo_delete  = osc_lock_delete,
 	.clo_state   = osc_lock_state,
 	.clo_cancel  = osc_lock_cancel,
-	.clo_weigh   = osc_lock_weigh,
 	.clo_print   = osc_lock_print,
 	.clo_fits_into = osc_lock_fits_into,
 };
@@ -1570,7 +1642,6 @@ int osc_lock_init(const struct lu_env *env,
 		__u32 enqflags = lock->cll_descr.cld_enq_flags;
 
 		osc_lock_build_einfo(env, lock, clk, &clk->ols_einfo);
-		atomic_set(&clk->ols_pageref, 0);
 		clk->ols_state = OLS_NEW;
 
 		clk->ols_flags = osc_enq2ldlm_flags(enqflags);
@@ -1597,26 +1668,4 @@ int osc_lock_init(const struct lu_env *env,
 	return result;
 }
 
-int osc_dlm_lock_pageref(struct ldlm_lock *dlm)
-{
-	struct osc_lock *olock;
-	int rc = 0;
-
-	spin_lock(&osc_ast_guard);
-	olock = dlm->l_ast_data;
-	/*
-	 * there's a very rare race with osc_page_addref_lock(), but that
-	 * doesn't matter because in the worst case we don't cancel a lock
-	 * which we actually can, that's no harm.
-	 */
-	if (olock &&
-	    atomic_add_return(_PAGEREF_MAGIC,
-			      &olock->ols_pageref) != _PAGEREF_MAGIC) {
-		atomic_sub(_PAGEREF_MAGIC, &olock->ols_pageref);
-		rc = 1;
-	}
-	spin_unlock(&osc_ast_guard);
-	return rc;
-}
-
 /** @} osc */
diff --git a/drivers/staging/lustre/lustre/osc/osc_page.c b/drivers/staging/lustre/lustre/osc/osc_page.c
index eff3b4b..8dc62fa 100644
--- a/drivers/staging/lustre/lustre/osc/osc_page.c
+++ b/drivers/staging/lustre/lustre/osc/osc_page.c
@@ -67,10 +67,6 @@ static int osc_page_protected(const struct lu_env *env,
 static void osc_page_fini(const struct lu_env *env,
 			  struct cl_page_slice *slice)
 {
-	struct osc_page *opg = cl2osc_page(slice);
-
-	CDEBUG(D_TRACE, "%p\n", opg);
-	LASSERT(!opg->ops_lock);
 }
 
 static void osc_page_transfer_get(struct osc_page *opg, const char *label)
@@ -139,42 +135,6 @@ void osc_index2policy(ldlm_policy_data_t *policy, const struct cl_object *obj,
 	policy->l_extent.end = cl_offset(obj, end + 1) - 1;
 }
 
-static int osc_page_addref_lock(const struct lu_env *env,
-				struct osc_page *opg,
-				struct cl_lock *lock)
-{
-	struct osc_lock *olock;
-	int rc;
-
-	LASSERT(!opg->ops_lock);
-
-	olock = osc_lock_at(lock);
-	if (atomic_inc_return(&olock->ols_pageref) <= 0) {
-		atomic_dec(&olock->ols_pageref);
-		rc = -ENODATA;
-	} else {
-		cl_lock_get(lock);
-		opg->ops_lock = lock;
-		rc = 0;
-	}
-	return rc;
-}
-
-static void osc_page_putref_lock(const struct lu_env *env,
-				 struct osc_page *opg)
-{
-	struct cl_lock *lock = opg->ops_lock;
-	struct osc_lock *olock;
-
-	LASSERT(lock);
-	olock = osc_lock_at(lock);
-
-	atomic_dec(&olock->ols_pageref);
-	opg->ops_lock = NULL;
-
-	cl_lock_put(env, lock);
-}
-
 static int osc_page_is_under_lock(const struct lu_env *env,
 				  const struct cl_page_slice *slice,
 				  struct cl_io *unused)
@@ -185,39 +145,12 @@ static int osc_page_is_under_lock(const struct lu_env *env,
 	lock = cl_lock_at_page(env, slice->cpl_obj, slice->cpl_page,
 			       NULL, 1, 0);
 	if (lock) {
-		if (osc_page_addref_lock(env, cl2osc_page(slice), lock) == 0)
-			result = -EBUSY;
 		cl_lock_put(env, lock);
+		result = -EBUSY;
 	}
 	return result;
 }
 
-static void osc_page_disown(const struct lu_env *env,
-			    const struct cl_page_slice *slice,
-			    struct cl_io *io)
-{
-	struct osc_page *opg = cl2osc_page(slice);
-
-	if (unlikely(opg->ops_lock))
-		osc_page_putref_lock(env, opg);
-}
-
-static void osc_page_completion_read(const struct lu_env *env,
-				     const struct cl_page_slice *slice,
-				     int ioret)
-{
-	struct osc_page *opg = cl2osc_page(slice);
-
-	if (likely(opg->ops_lock))
-		osc_page_putref_lock(env, opg);
-}
-
-static void osc_page_completion_write(const struct lu_env *env,
-				      const struct cl_page_slice *slice,
-				      int ioret)
-{
-}
-
 static const char *osc_list(struct list_head *head)
 {
 	return list_empty(head) ? "-" : "+";
@@ -366,15 +299,6 @@ static const struct cl_page_operations osc_page_ops = {
 	.cpo_print	 = osc_page_print,
 	.cpo_delete	= osc_page_delete,
 	.cpo_is_under_lock = osc_page_is_under_lock,
-	.cpo_disown	= osc_page_disown,
-	.io = {
-		[CRT_READ] = {
-			.cpo_completion = osc_page_completion_read
-		},
-		[CRT_WRITE] = {
-			.cpo_completion = osc_page_completion_write
-		}
-	},
 	.cpo_clip	   = osc_page_clip,
 	.cpo_cancel	 = osc_page_cancel,
 	.cpo_flush	  = osc_page_flush
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index 1ff497f..1e378e6 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -3131,8 +3131,6 @@ static int osc_import_event(struct obd_device *obd,
  */
 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
 {
-	check_res_locked(lock->l_resource);
-
 	/*
 	 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
 	 *
@@ -3141,8 +3139,7 @@ static int osc_cancel_for_recovery(struct ldlm_lock *lock)
 	 */
 	if (lock->l_resource->lr_type == LDLM_EXTENT &&
 	    (lock->l_granted_mode == LCK_PR ||
-	     lock->l_granted_mode == LCK_CR) &&
-	    (osc_dlm_lock_pageref(lock) == 0))
+	     lock->l_granted_mode == LCK_CR) && osc_ldlm_weigh_ast(lock) == 0)
 		return 1;
 
 	return 0;
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367420 — [PATCH 20/43] staging/lustre: update comments after cl_lock simplification

From: Bobi Jam <bobijam.xu@intel.com>

Update comments to reflect current cl_lock situations.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-on: http://review.whamcloud.com/13137
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6046
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  | 130 +++------------------
 .../staging/lustre/lustre/lov/lov_cl_internal.h    |  13 ---
 2 files changed, 19 insertions(+), 124 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index 8f9512e..e613007 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -1117,111 +1117,29 @@ static inline struct page *cl_page_vmpage(struct cl_page *page)
  *
  * LIFE CYCLE
  *
- * cl_lock is reference counted. When reference counter drops to 0, lock is
- * placed in the cache, except when lock is in CLS_FREEING state. CLS_FREEING
- * lock is destroyed when last reference is released. Referencing between
- * top-lock and its sub-locks is described in the lov documentation module.
- *
- * STATE MACHINE
- *
- * Also, cl_lock is a state machine. This requires some clarification. One of
- * the goals of client IO re-write was to make IO path non-blocking, or at
- * least to make it easier to make it non-blocking in the future. Here
- * `non-blocking' means that when a system call (read, write, truncate)
- * reaches a situation where it has to wait for a communication with the
- * server, it should --instead of waiting-- remember its current state and
- * switch to some other work.  E.g,. instead of waiting for a lock enqueue,
- * client should proceed doing IO on the next stripe, etc. Obviously this is
- * rather radical redesign, and it is not planned to be fully implemented at
- * this time, instead we are putting some infrastructure in place, that would
- * make it easier to do asynchronous non-blocking IO easier in the
- * future. Specifically, where old locking code goes to sleep (waiting for
- * enqueue, for example), new code returns cl_lock_transition::CLO_WAIT. When
- * enqueue reply comes, its completion handler signals that lock state-machine
- * is ready to transit to the next state. There is some generic code in
- * cl_lock.c that sleeps, waiting for these signals. As a result, for users of
- * this cl_lock.c code, it looks like locking is done in normal blocking
- * fashion, and it the same time it is possible to switch to the non-blocking
- * locking (simply by returning cl_lock_transition::CLO_WAIT from cl_lock.c
- * functions).
- *
- * For a description of state machine states and transitions see enum
- * cl_lock_state.
- *
- * There are two ways to restrict a set of states which lock might move to:
- *
- *     - placing a "hold" on a lock guarantees that lock will not be moved
- *       into cl_lock_state::CLS_FREEING state until hold is released. Hold
- *       can be only acquired on a lock that is not in
- *       cl_lock_state::CLS_FREEING. All holds on a lock are counted in
- *       cl_lock::cll_holds. Hold protects lock from cancellation and
- *       destruction. Requests to cancel and destroy a lock on hold will be
- *       recorded, but only honored when last hold on a lock is released;
- *
- *     - placing a "user" on a lock guarantees that lock will not leave
- *       cl_lock_state::CLS_NEW, cl_lock_state::CLS_QUEUING,
- *       cl_lock_state::CLS_ENQUEUED and cl_lock_state::CLS_HELD set of
- *       states, once it enters this set. That is, if a user is added onto a
- *       lock in a state not from this set, it doesn't immediately enforce
- *       lock to move to this set, but once lock enters this set it will
- *       remain there until all users are removed. Lock users are counted in
- *       cl_lock::cll_users.
- *
- *       User is used to assure that lock is not canceled or destroyed while
- *       it is being enqueued, or actively used by some IO.
- *
- *       Currently, a user always comes with a hold (cl_lock_invariant()
- *       checks that a number of holds is not less than a number of users).
- *
- * CONCURRENCY
- *
- * This is how lock state-machine operates. struct cl_lock contains a mutex
- * cl_lock::cll_guard that protects struct fields.
- *
- *     - mutex is taken, and cl_lock::cll_state is examined.
- *
- *     - for every state there are possible target states where lock can move
- *       into. They are tried in order. Attempts to move into next state are
- *       done by _try() functions in cl_lock.c:cl_{enqueue,unlock,wait}_try().
- *
- *     - if the transition can be performed immediately, state is changed,
- *       and mutex is released.
- *
- *     - if the transition requires blocking, _try() function returns
- *       cl_lock_transition::CLO_WAIT. Caller unlocks mutex and goes to
- *       sleep, waiting for possibility of lock state change. It is woken
- *       up when some event occurs, that makes lock state change possible
- *       (e.g., the reception of the reply from the server), and repeats
- *       the loop.
- *
- * Top-lock and sub-lock has separate mutexes and the latter has to be taken
- * first to avoid dead-lock.
- *
- * To see an example of interaction of all these issues, take a look at the
- * lov_cl.c:lov_lock_enqueue() function. It is called as a part of
- * cl_enqueue_try(), and tries to advance top-lock to ENQUEUED state, by
- * advancing state-machines of its sub-locks (lov_lock_enqueue_one()). Note
- * also, that it uses trylock to grab sub-lock mutex to avoid dead-lock. It
- * also has to handle CEF_ASYNC enqueue, when sub-locks enqueues have to be
- * done in parallel, rather than one after another (this is used for glimpse
- * locks, that cannot dead-lock).
+ * cl_lock is a cacheless data container for the requirements of locks to
+ * complete the IO. cl_lock is created before I/O starts and destroyed when the
+ * I/O is complete.
+ *
+ * cl_lock depends on LDLM lock to fulfill lock semantics. LDLM lock is attached
+ * to cl_lock at OSC layer. LDLM lock is still cacheable.
  *
  * INTERFACE AND USAGE
  *
- * struct cl_lock_operations provide a number of call-backs that are invoked
- * when events of interest occurs. Layers can intercept and handle glimpse,
- * blocking, cancel ASTs and a reception of the reply from the server.
+ * Two major methods are supported for cl_lock: clo_enqueue and clo_cancel.  A
+ * cl_lock is enqueued by cl_lock_request(), which will call clo_enqueue()
+ * methods for each layer to enqueue the lock. At the LOV layer, if a cl_lock
+ * consists of multiple sub cl_locks, each sub locks will be enqueued
+ * correspondingly. At OSC layer, the lock enqueue request will tend to reuse
+ * cached LDLM lock; otherwise a new LDLM lock will have to be requested from
+ * OST side.
  *
- * One important difference with the old client locking model is that new
- * client has a representation for the top-lock, whereas in the old code only
- * sub-locks existed as real data structures and file-level locks are
- * represented by "request sets" that are created and destroyed on each and
- * every lock creation.
+ * cl_lock_cancel() must be called to release a cl_lock after use. clo_cancel()
+ * method will be called for each layer to release the resource held by this
+ * lock. At OSC layer, the reference count of LDLM lock, which is held at
+ * clo_enqueue time, is released.
  *
- * Top-locks are cached, and can be found in the cache by the system calls. It
- * is possible that top-lock is in cache, but some of its sub-locks were
- * canceled and destroyed. In that case top-lock has to be enqueued again
- * before it can be used.
+ * LDLM lock can only be canceled if there is no cl_lock using it.
  *
  * Overall process of the locking during IO operation is as following:
  *
@@ -1234,7 +1152,7 @@ static inline struct page *cl_page_vmpage(struct cl_page *page)
  *
  *     - when all locks are acquired, IO is performed;
  *
- *     - locks are released into cache.
+ *     - locks are released after IO is complete.
  *
  * Striping introduces major additional complexity into locking. The
  * fundamental problem is that it is generally unsafe to actively use (hold)
@@ -1256,16 +1174,6 @@ static inline struct page *cl_page_vmpage(struct cl_page *page)
  * buf is a part of memory mapped Lustre file, a lock or locks protecting buf
  * has to be held together with the usual lock on [offset, offset + count].
  *
- * As multi-stripe locks have to be allowed, it makes sense to cache them, so
- * that, for example, a sequence of O_APPEND writes can proceed quickly
- * without going down to the individual stripes to do lock matching. On the
- * other hand, multi-stripe locks shouldn't be used by normal read/write
- * calls. To achieve this, every layer can implement ->clo_fits_into() method,
- * that is called by lock matching code (cl_lock_lookup()), and that can be
- * used to selectively disable matching of certain locks for certain IOs. For
- * example, lov layer implements lov_lock_fits_into() that allow multi-stripe
- * locks to be matched only for truncates and O_APPEND writes.
- *
  * Interaction with DLM
  *
  * In the expected setup, cl_lock is ultimately backed up by a collection of
diff --git a/drivers/staging/lustre/lustre/lov/lov_cl_internal.h b/drivers/staging/lustre/lustre/lov/lov_cl_internal.h
index dfe41a8..ac9744e 100644
--- a/drivers/staging/lustre/lustre/lov/lov_cl_internal.h
+++ b/drivers/staging/lustre/lustre/lov/lov_cl_internal.h
@@ -73,19 +73,6 @@
  *     - top-page keeps a reference to its sub-page, and destroys it when it
  *       is destroyed.
  *
- *     - sub-lock keep a reference to its top-locks. Top-lock keeps a
- *       reference (and a hold, see cl_lock_hold()) on its sub-locks when it
- *       actively using them (that is, in cl_lock_state::CLS_QUEUING,
- *       cl_lock_state::CLS_ENQUEUED, cl_lock_state::CLS_HELD states). When
- *       moving into cl_lock_state::CLS_CACHED state, top-lock releases a
- *       hold. From this moment top-lock has only a 'weak' reference to its
- *       sub-locks. This reference is protected by top-lock
- *       cl_lock::cll_guard, and will be automatically cleared by the sub-lock
- *       when the latter is destroyed. When a sub-lock is canceled, a
- *       reference to it is removed from the top-lock array, and top-lock is
- *       moved into CLS_NEW state. It is guaranteed that all sub-locks exist
- *       while their top-lock is in CLS_HELD or CLS_CACHED states.
- *
  *     - IO's are not reference counted.
  *
  * To implement a connection between top and sub entities, lov layer is split
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367422 — [PATCH 02/43] staging/lustre: Get rid of CFS_PAGE_MASK

From: Oleg Drokin <green@linuxhacker.ru>

CFS_PAGE_MASK is the same as PAGE_MASK, so get rid of it.

We are replacing it with PAGE_MASK instead of PAGE_CACHE_MASK
because PAGE_CACHE_* stuff is apparently going away.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 .../lustre/include/linux/libcfs/linux/linux-mem.h  |  1 -
 .../lustre/lnet/libcfs/linux/linux-crypto.c        |  2 +-
 drivers/staging/lustre/lnet/selftest/brw_test.c    |  2 +-
 drivers/staging/lustre/lustre/llite/llite_mmap.c   |  4 ++--
 drivers/staging/lustre/lustre/llite/rw26.c         |  8 ++++----
 drivers/staging/lustre/lustre/llite/vvp_io.c       |  6 +++---
 drivers/staging/lustre/lustre/lmv/lmv_obd.c        |  2 +-
 drivers/staging/lustre/lustre/obdclass/class_obd.c |  2 +-
 .../staging/lustre/lustre/obdecho/echo_client.c    |  6 +++---
 drivers/staging/lustre/lustre/osc/osc_cache.c      |  4 ++--
 drivers/staging/lustre/lustre/osc/osc_request.c    | 24 +++++++++++-----------
 drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c    |  2 +-
 drivers/staging/lustre/lustre/ptlrpc/sec_plain.c   |  2 +-
 13 files changed, 32 insertions(+), 33 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h b/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
index 0f2fd79..448379b 100644
--- a/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
+++ b/drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
@@ -57,7 +57,6 @@
 #include "../libcfs_cpu.h"
 #endif
 
-#define CFS_PAGE_MASK		   (~((__u64)PAGE_CACHE_SIZE-1))
 #define page_index(p)       ((p)->index)
 
 #define memory_pressure_get() (current->flags & PF_MEMALLOC)
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
index 0715101..84f9b7b 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-crypto.c
@@ -227,7 +227,7 @@ int cfs_crypto_hash_update_page(struct cfs_crypto_hash_desc *hdesc,
 	struct scatterlist sl;
 
 	sg_init_table(&sl, 1);
-	sg_set_page(&sl, page, len, offset & ~CFS_PAGE_MASK);
+	sg_set_page(&sl, page, len, offset & ~PAGE_MASK);
 
 	ahash_request_set_crypt(req, &sl, NULL, sl.length);
 	return crypto_ahash_update(req);
diff --git a/drivers/staging/lustre/lnet/selftest/brw_test.c b/drivers/staging/lustre/lnet/selftest/brw_test.c
index b33c356..1988cee 100644
--- a/drivers/staging/lustre/lnet/selftest/brw_test.c
+++ b/drivers/staging/lustre/lnet/selftest/brw_test.c
@@ -457,7 +457,7 @@ brw_server_handle(struct srpc_server_rpc *rpc)
 
 	if (!(reqstmsg->msg_ses_feats & LST_FEAT_BULK_LEN)) {
 		/* compat with old version */
-		if (reqst->brw_len & ~CFS_PAGE_MASK) {
+		if (reqst->brw_len & ~PAGE_MASK) {
 			reply->brw_status = EINVAL;
 			return 0;
 		}
diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c
index 69445a9..baccf93 100644
--- a/drivers/staging/lustre/lustre/llite/llite_mmap.c
+++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c
@@ -57,10 +57,10 @@ void policy_from_vma(ldlm_policy_data_t *policy,
 		     struct vm_area_struct *vma, unsigned long addr,
 		     size_t count)
 {
-	policy->l_extent.start = ((addr - vma->vm_start) & CFS_PAGE_MASK) +
+	policy->l_extent.start = ((addr - vma->vm_start) & PAGE_MASK) +
 				 (vma->vm_pgoff << PAGE_CACHE_SHIFT);
 	policy->l_extent.end = (policy->l_extent.start + count - 1) |
-			       ~CFS_PAGE_MASK;
+			       ~PAGE_MASK;
 }
 
 struct vm_area_struct *our_vma(struct mm_struct *mm, unsigned long addr,
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
index 7a5db67..3d7e64e 100644
--- a/drivers/staging/lustre/lustre/llite/rw26.c
+++ b/drivers/staging/lustre/lustre/llite/rw26.c
@@ -376,7 +376,7 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 		return -EBADF;
 
 	/* FIXME: io smaller than PAGE_SIZE is broken on ia64 ??? */
-	if ((file_offset & ~CFS_PAGE_MASK) || (count & ~CFS_PAGE_MASK))
+	if ((file_offset & ~PAGE_MASK) || (count & ~PAGE_MASK))
 		return -EINVAL;
 
 	CDEBUG(D_VFSTRACE,
@@ -386,7 +386,7 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 	       MAX_DIO_SIZE >> PAGE_CACHE_SHIFT);
 
 	/* Check that all user buffers are aligned as well */
-	if (iov_iter_alignment(iter) & ~CFS_PAGE_MASK)
+	if (iov_iter_alignment(iter) & ~PAGE_MASK)
 		return -EINVAL;
 
 	env = cl_env_get(&refcheck);
@@ -435,8 +435,8 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 			    size > (PAGE_CACHE_SIZE / sizeof(*pages)) *
 				   PAGE_CACHE_SIZE) {
 				size = ((((size / 2) - 1) |
-					 ~CFS_PAGE_MASK) + 1) &
-					CFS_PAGE_MASK;
+					 ~PAGE_MASK) + 1) &
+					PAGE_MASK;
 				CDEBUG(D_VFSTRACE, "DIO size now %lu\n",
 				       size);
 				continue;
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index fb0c26e..984699a 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -234,8 +234,8 @@ static int vvp_mmap_locks(const struct lu_env *env,
 		if (count == 0)
 			continue;
 
-		count += addr & (~CFS_PAGE_MASK);
-		addr &= CFS_PAGE_MASK;
+		count += addr & (~PAGE_MASK);
+		addr &= PAGE_MASK;
 
 		down_read(&mm->mmap_sem);
 		while ((vma = our_vma(mm, addr, count)) != NULL) {
@@ -1043,7 +1043,7 @@ static int vvp_io_commit_write(const struct lu_env *env,
 				to = PAGE_CACHE_SIZE;
 				need_clip = false;
 			} else if (last_index == pg->cp_index) {
-				int size_to = i_size_read(inode) & ~CFS_PAGE_MASK;
+				int size_to = i_size_read(inode) & ~PAGE_MASK;
 
 				if (to < size_to)
 					to = size_to;
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index 0f776cf..e3a7216 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -2071,7 +2071,7 @@ static void lmv_adjust_dirpages(struct page **pages, int ncfspgs, int nlupgs)
 			dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
 
 			/* Check if we've reached the end of the CFS_PAGE. */
-			if (!((unsigned long)dp & ~CFS_PAGE_MASK))
+			if (!((unsigned long)dp & ~PAGE_MASK))
 				break;
 
 			/* Save the hash and flags of this lu_dirpage. */
diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c
index 1a938e1..d9844ba 100644
--- a/drivers/staging/lustre/lustre/obdclass/class_obd.c
+++ b/drivers/staging/lustre/lustre/obdclass/class_obd.c
@@ -461,7 +461,7 @@ static int obd_init_checks(void)
 		CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 		ret = -EINVAL;
 	}
-	if ((u64val & ~CFS_PAGE_MASK) >= PAGE_CACHE_SIZE) {
+	if ((u64val & ~PAGE_MASK) >= PAGE_CACHE_SIZE) {
 		CWARN("mask failed: u64val %llu >= %llu\n", u64val,
 		      (__u64)PAGE_CACHE_SIZE);
 		ret = -EINVAL;
diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
index 64ffe24..33ce0c8 100644
--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
+++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
@@ -1119,7 +1119,7 @@ static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset,
 	int rc;
 	int i;
 
-	LASSERT((offset & ~CFS_PAGE_MASK) == 0);
+	LASSERT((offset & ~PAGE_MASK) == 0);
 	LASSERT(ed->ed_next);
 	env = cl_env_get(&refcheck);
 	if (IS_ERR(env))
@@ -1387,7 +1387,7 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
 	LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
 
 	if (count <= 0 ||
-	    (count & (~CFS_PAGE_MASK)) != 0)
+	    (count & (~PAGE_MASK)) != 0)
 		return -EINVAL;
 
 	/* XXX think again with misaligned I/O */
@@ -1470,7 +1470,7 @@ static int echo_client_prep_commit(const struct lu_env *env,
 	u64 npages, tot_pages;
 	int i, ret = 0, brw_flags = 0;
 
-	if (count <= 0 || (count & (~CFS_PAGE_MASK)) != 0)
+	if (count <= 0 || (count & (~PAGE_MASK)) != 0)
 		return -EINVAL;
 
 	npages = batch >> PAGE_CACHE_SHIFT;
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 6336311..3cfd2b0 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -877,7 +877,7 @@ int osc_extent_finish(const struct lu_env *env, struct osc_extent *ext,
 		 * span a whole chunk on the OST side, or our accounting goes
 		 * wrong.  Should match the code in filter_grant_check.
 		 */
-		int offset = oap->oap_page_off & ~CFS_PAGE_MASK;
+		int offset = oap->oap_page_off & ~PAGE_MASK;
 		int count = oap->oap_count + (offset & (blocksize - 1));
 		int end = (offset + oap->oap_count) & (blocksize - 1);
 
@@ -2238,7 +2238,7 @@ int osc_prep_async_page(struct osc_object *osc, struct osc_page *ops,
 
 	oap->oap_page = page;
 	oap->oap_obj_off = offset;
-	LASSERT(!(offset & ~CFS_PAGE_MASK));
+	LASSERT(!(offset & ~PAGE_MASK));
 
 	if (!client_is_remote(exp) && capable(CFS_CAP_SYS_RESOURCE))
 		oap->oap_brw_flags = OBD_BRW_NOQUOTA;
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index ec0287f..850d5dd 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -1082,7 +1082,7 @@ static void handle_short_read(int nob_read, u32 page_count,
 		if (pga[i]->count > nob_read) {
 			/* EOF inside this page */
 			ptr = kmap(pga[i]->pg) +
-				(pga[i]->off & ~CFS_PAGE_MASK);
+				(pga[i]->off & ~PAGE_MASK);
 			memset(ptr + nob_read, 0, pga[i]->count - nob_read);
 			kunmap(pga[i]->pg);
 			page_count--;
@@ -1097,7 +1097,7 @@ static void handle_short_read(int nob_read, u32 page_count,
 
 	/* zero remaining pages */
 	while (page_count-- > 0) {
-		ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
+		ptr = kmap(pga[i]->pg) + (pga[i]->off & ~PAGE_MASK);
 		memset(ptr, 0, pga[i]->count);
 		kunmap(pga[i]->pg);
 		i++;
@@ -1188,20 +1188,20 @@ static u32 osc_checksum_bulk(int nob, u32 pg_count,
 		if (i == 0 && opc == OST_READ &&
 		    OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
 			unsigned char *ptr = kmap(pga[i]->pg);
-			int off = pga[i]->off & ~CFS_PAGE_MASK;
+			int off = pga[i]->off & ~PAGE_MASK;
 
 			memcpy(ptr + off, "bad1", min(4, nob));
 			kunmap(pga[i]->pg);
 		}
 		cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
-					    pga[i]->off & ~CFS_PAGE_MASK,
+					    pga[i]->off & ~PAGE_MASK,
 				  count);
 		CDEBUG(D_PAGE,
 		       "page %p map %p index %lu flags %lx count %u priv %0lx: off %d\n",
 		       pga[i]->pg, pga[i]->pg->mapping, pga[i]->pg->index,
 		       (long)pga[i]->pg->flags, page_count(pga[i]->pg),
 		       page_private(pga[i]->pg),
-		       (int)(pga[i]->off & ~CFS_PAGE_MASK));
+		       (int)(pga[i]->off & ~PAGE_MASK));
 
 		nob -= pga[i]->count;
 		pg_count--;
@@ -1309,7 +1309,7 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,
 	pg_prev = pga[0];
 	for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
 		struct brw_page *pg = pga[i];
-		int poff = pg->off & ~CFS_PAGE_MASK;
+		int poff = pg->off & ~PAGE_MASK;
 
 		LASSERT(pg->count > 0);
 		/* make sure there is no gap in the middle of page array */
@@ -2227,8 +2227,8 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
 	/* Filesystem lock extents are extended to page boundaries so that
 	 * dealing with the page cache is a little smoother.
 	 */
-	policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
-	policy->l_extent.end |= ~CFS_PAGE_MASK;
+	policy->l_extent.start -= policy->l_extent.start & ~PAGE_MASK;
+	policy->l_extent.end |= ~PAGE_MASK;
 
 	/*
 	 * kms is not valid when either object is completely fresh (so that no
@@ -2378,8 +2378,8 @@ int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
 	/* Filesystem lock extents are extended to page boundaries so that
 	 * dealing with the page cache is a little smoother
 	 */
-	policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
-	policy->l_extent.end |= ~CFS_PAGE_MASK;
+	policy->l_extent.start -= policy->l_extent.start & ~PAGE_MASK;
+	policy->l_extent.end |= ~PAGE_MASK;
 
 	/* Next, search for already existing extent locks that will cover us */
 	/* If we're trying to read, we also search for an existing PW lock.  The
@@ -2784,7 +2784,7 @@ out:
 			goto skip_locking;
 
 		policy.l_extent.start = fm_key->fiemap.fm_start &
-						CFS_PAGE_MASK;
+						PAGE_MASK;
 
 		if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
 		    fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1)
@@ -2792,7 +2792,7 @@ out:
 		else
 			policy.l_extent.end = (fm_key->fiemap.fm_start +
 				fm_key->fiemap.fm_length +
-				PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK;
+				PAGE_CACHE_SIZE - 1) & PAGE_MASK;
 
 		ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
 		mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c b/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
index 54a0c1f..33d1411 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
@@ -527,7 +527,7 @@ int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg,
 
 	for (i = 0; i < desc->bd_iov_count; i++) {
 		cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
-				  desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
+				  desc->bd_iov[i].kiov_offset & ~PAGE_MASK,
 				  desc->bd_iov[i].kiov_len);
 	}
 
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c b/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
index 6276bf5..37c9f4c 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
@@ -162,7 +162,7 @@ static void corrupt_bulk_data(struct ptlrpc_bulk_desc *desc)
 			continue;
 
 		ptr = kmap(desc->bd_iov[i].kiov_page);
-		off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
+		off = desc->bd_iov[i].kiov_offset & ~PAGE_MASK;
 		ptr[off] ^= 0x1;
 		kunmap(desc->bd_iov[i].kiov_page);
 		return;
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367423 — [PATCH 17/43] staging/lustre: Remove struct ll_iattr

From: Oleg Drokin <green@linuxhacker.ru>

This was a compat code from the time we had ia_attr_flags.
Instead convert all the cryptic callers that did
((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags into
direct access to op_data->op_attr_flags

This also makes lustre/include/linux/obd.h not needed anymore,
so remove it.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/linux/obd.h | 58 -----------------------
 drivers/staging/lustre/lustre/include/obd.h       |  2 +-
 drivers/staging/lustre/lustre/llite/file.c        |  4 +-
 drivers/staging/lustre/lustre/llite/llite_lib.c   |  2 +-
 drivers/staging/lustre/lustre/mdc/mdc_lib.c       |  3 +-
 drivers/staging/lustre/lustre/obdclass/obdo.c     |  3 +-
 6 files changed, 6 insertions(+), 66 deletions(-)
 delete mode 100644 drivers/staging/lustre/lustre/include/linux/obd.h

diff --git a/drivers/staging/lustre/lustre/include/linux/obd.h b/drivers/staging/lustre/lustre/include/linux/obd.h
deleted file mode 100644
index e1063e8..0000000
--- a/drivers/staging/lustre/lustre/include/linux/obd.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#ifndef __LINUX_OBD_H
-#define __LINUX_OBD_H
-
-#ifndef __OBD_H
-#error Do not #include this file directly. #include <obd.h> instead
-#endif
-
-#include "../obd_support.h"
-
-#include <linux/fs.h>
-#include <linux/list.h>
-#include <linux/sched.h>  /* for struct task_struct, for current.h */
-#include <linux/mount.h>
-
-#include "../lustre_intent.h"
-
-struct ll_iattr {
-	struct iattr	iattr;
-	unsigned int	ia_attr_flags;
-};
-
-#endif /* __LINUX_OBD_H */
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index 84cc001..ded7b10 100644
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -38,7 +38,6 @@
 #define __OBD_H
 
 #include <linux/spinlock.h>
-#include "linux/obd.h"
 
 #define IOC_OSC_TYPE	 'h'
 #define IOC_OSC_MIN_NR       20
@@ -55,6 +54,7 @@
 #include "lustre_export.h"
 #include "lustre_fid.h"
 #include "lustre_fld.h"
+#include "lustre_intent.h"
 
 #define MAX_OBD_DEVICES 8192
 
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index c3c258f..bf2a5ee 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -45,6 +45,7 @@
 #include "../include/lustre_lite.h"
 #include <linux/pagemap.h>
 #include <linux/file.h>
+#include <linux/mount.h>
 #include "llite_internal.h"
 #include "../include/lustre/ll_fiemap.h"
 
@@ -87,8 +88,7 @@ void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
 	op_data->op_attr.ia_ctime = inode->i_ctime;
 	op_data->op_attr.ia_size = i_size_read(inode);
 	op_data->op_attr_blocks = inode->i_blocks;
-	((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
-					ll_inode_to_ext_flags(inode->i_flags);
+	op_data->op_attr_flags = ll_inode_to_ext_flags(inode->i_flags);
 	op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
 	if (fh)
 		op_data->op_handle = *fh;
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 041d221..0f01cfc 100644
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -1771,7 +1771,7 @@ int ll_iocontrol(struct inode *inode, struct file *file,
 		if (IS_ERR(op_data))
 			return PTR_ERR(op_data);
 
-		((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
+		op_data->op_attr_flags = flags;
 		op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
 		rc = md_setattr(sbi->ll_md_exp, op_data,
 				NULL, 0, NULL, 0, &req, NULL);
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_lib.c b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
index bd29eb7..be0acf7 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_lib.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
@@ -279,8 +279,7 @@ static void mdc_setattr_pack_rec(struct mdt_rec_setattr *rec,
 	rec->sa_atime  = LTIME_S(op_data->op_attr.ia_atime);
 	rec->sa_mtime  = LTIME_S(op_data->op_attr.ia_mtime);
 	rec->sa_ctime  = LTIME_S(op_data->op_attr.ia_ctime);
-	rec->sa_attr_flags =
-			((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags;
+	rec->sa_attr_flags = op_data->op_attr_flags;
 	if ((op_data->op_attr.ia_valid & ATTR_GID) &&
 	    in_group_p(op_data->op_attr.ia_gid))
 		rec->sa_suppgid =
diff --git a/drivers/staging/lustre/lustre/obdclass/obdo.c b/drivers/staging/lustre/lustre/obdclass/obdo.c
index e6436cb..748e33f 100644
--- a/drivers/staging/lustre/lustre/obdclass/obdo.c
+++ b/drivers/staging/lustre/lustre/obdclass/obdo.c
@@ -185,8 +185,7 @@ void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid)
 		op_data->op_attr.ia_valid |= ATTR_BLOCKS;
 	}
 	if (valid & OBD_MD_FLFLAGS) {
-		((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
-			oa->o_flags;
+		op_data->op_attr_flags = oa->o_flags;
 		op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
 	}
 }
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367425 — [PATCH 08/43] staging/lustre/obdclass: Add a preallocated percpu cl_env

From: Jinshan Xiong <jinshan.xiong@intel.com>

This change adds support for a single preallocated cl_env per CPU
which can be used in circumstances where reschedule is not possible.
Currently this interface is only used by the ll_releasepage function.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Reviewed-on: http://review.whamcloud.com/8174
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |  12 +++
 drivers/staging/lustre/lustre/llite/rw26.c         |  54 +++++++----
 drivers/staging/lustre/lustre/obdclass/cl_lock.c   |   1 -
 drivers/staging/lustre/lustre/obdclass/cl_object.c | 107 +++++++++++++++++++++
 drivers/staging/lustre/lustre/obdclass/cl_page.c   |   1 -
 5 files changed, 152 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index 5daf688..e8455dc 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -2773,6 +2773,16 @@ static inline void *cl_object_page_slice(struct cl_object *clob,
 	return (void *)((char *)page + clob->co_slice_off);
 }
 
+/**
+ * Return refcount of cl_object.
+ */
+static inline int cl_object_refc(struct cl_object *clob)
+{
+	struct lu_object_header *header = clob->co_lu.lo_header;
+
+	return atomic_read(&header->loh_ref);
+}
+
 /** @} cl_object */
 
 /** \defgroup cl_page cl_page
@@ -3226,6 +3236,8 @@ void cl_env_reexit(void *cookie);
 void cl_env_implant(struct lu_env *env, int *refcheck);
 void cl_env_unplant(struct lu_env *env, int *refcheck);
 unsigned int cl_env_cache_purge(unsigned int nr);
+struct lu_env *cl_env_percpu_get(void);
+void cl_env_percpu_put(struct lu_env *env);
 
 /** @} cl_env */
 
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
index b5335de..cc49c21 100644
--- a/drivers/staging/lustre/lustre/llite/rw26.c
+++ b/drivers/staging/lustre/lustre/llite/rw26.c
@@ -107,12 +107,12 @@ static void ll_invalidatepage(struct page *vmpage, unsigned int offset,
 
 static int ll_releasepage(struct page *vmpage, gfp_t gfp_mask)
 {
-	struct cl_env_nest nest;
 	struct lu_env     *env;
+	void			*cookie;
 	struct cl_object  *obj;
 	struct cl_page    *page;
 	struct address_space *mapping;
-	int result;
+	int result = 0;
 
 	LASSERT(PageLocked(vmpage));
 	if (PageWriteback(vmpage) || PageDirty(vmpage))
@@ -126,30 +126,42 @@ static int ll_releasepage(struct page *vmpage, gfp_t gfp_mask)
 	if (!obj)
 		return 1;
 
-	/* 1 for page allocator, 1 for cl_page and 1 for page cache */
+	/* 1 for caller, 1 for cl_page and 1 for page cache */
 	if (page_count(vmpage) > 3)
 		return 0;
 
-	/* TODO: determine what gfp should be used by @gfp_mask. */
-	env = cl_env_nested_get(&nest);
-	if (IS_ERR(env))
-		/* If we can't allocate an env we won't call cl_page_put()
-		 * later on which further means it's impossible to drop
-		 * page refcount by cl_page, so ask kernel to not free
-		 * this page.
-		 */
-		return 0;
-
 	page = cl_vmpage_page(vmpage, obj);
-	result = !page;
-	if (page) {
-		if (!cl_page_in_use(page)) {
-			result = 1;
-			cl_page_delete(env, page);
-		}
-		cl_page_put(env, page);
+	if (!page)
+		return 1;
+
+	cookie = cl_env_reenter();
+	env = cl_env_percpu_get();
+	LASSERT(!IS_ERR(env));
+
+	if (!cl_page_in_use(page)) {
+		result = 1;
+		cl_page_delete(env, page);
 	}
-	cl_env_nested_put(&nest, env);
+
+	/* To use percpu env array, the call path can not be rescheduled;
+	 * otherwise percpu array will be messed if ll_releaspage() called
+	 * again on the same CPU.
+	 *
+	 * If this page holds the last refc of cl_object, the following
+	 * call path may cause reschedule:
+	 *   cl_page_put -> cl_page_free -> cl_object_put ->
+	 *     lu_object_put -> lu_object_free -> lov_delete_raid0 ->
+	 *     cl_locks_prune.
+	 *
+	 * However, the kernel can't get rid of this inode until all pages have
+	 * been cleaned up. Now that we hold page lock here, it's pretty safe
+	 * that we won't get into object delete path.
+	 */
+	LASSERT(cl_object_refc(obj) > 1);
+	cl_page_put(env, page);
+
+	cl_env_percpu_put(env);
+	cl_env_reexit(cookie);
 	return result;
 }
 
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_lock.c b/drivers/staging/lustre/lustre/obdclass/cl_lock.c
index 32ecc5a..fe8059a 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_lock.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_lock.c
@@ -255,7 +255,6 @@ static void cl_lock_free(const struct lu_env *env, struct cl_lock *lock)
 	LINVRNT(!cl_lock_is_mutexed(lock));
 
 	cl_lock_trace(D_DLMTRACE, env, "free lock", lock);
-	might_sleep();
 	while (!list_empty(&lock->cll_layers)) {
 		struct cl_lock_slice *slice;
 
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
index 65b6402..fa9b083 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
@@ -390,6 +390,8 @@ static int cache_stats_print(const struct cache_stats *cs,
 	return 0;
 }
 
+static void cl_env_percpu_refill(void);
+
 /**
  * Initialize client site.
  *
@@ -409,6 +411,7 @@ int cl_site_init(struct cl_site *s, struct cl_device *d)
 			atomic_set(&s->cs_pages_state[0], 0);
 		for (i = 0; i < ARRAY_SIZE(s->cs_locks_state); ++i)
 			atomic_set(&s->cs_locks_state[i], 0);
+		cl_env_percpu_refill();
 	}
 	return result;
 }
@@ -1001,6 +1004,104 @@ void cl_lvb2attr(struct cl_attr *attr, const struct ost_lvb *lvb)
 }
 EXPORT_SYMBOL(cl_lvb2attr);
 
+static struct cl_env cl_env_percpu[NR_CPUS];
+
+static int cl_env_percpu_init(void)
+{
+	struct cl_env *cle;
+	int tags = LCT_REMEMBER | LCT_NOREF;
+	int i, j;
+	int rc = 0;
+
+	for_each_possible_cpu(i) {
+		struct lu_env *env;
+
+		cle = &cl_env_percpu[i];
+		env = &cle->ce_lu;
+
+		INIT_LIST_HEAD(&cle->ce_linkage);
+		cle->ce_magic = &cl_env_init0;
+		rc = lu_env_init(env, LCT_CL_THREAD | tags);
+		if (rc == 0) {
+			rc = lu_context_init(&cle->ce_ses, LCT_SESSION | tags);
+			if (rc == 0) {
+				lu_context_enter(&cle->ce_ses);
+				env->le_ses = &cle->ce_ses;
+			} else {
+				lu_env_fini(env);
+			}
+		}
+		if (rc != 0)
+			break;
+	}
+	if (rc != 0) {
+		/* Indices 0 to i (excluding i) were correctly initialized,
+		 * thus we must uninitialize up to i, the rest are undefined.
+		 */
+		for (j = 0; j < i; j++) {
+			cle = &cl_env_percpu[i];
+			lu_context_exit(&cle->ce_ses);
+			lu_context_fini(&cle->ce_ses);
+			lu_env_fini(&cle->ce_lu);
+		}
+	}
+
+	return rc;
+}
+
+static void cl_env_percpu_fini(void)
+{
+	int i;
+
+	for_each_possible_cpu(i) {
+		struct cl_env *cle = &cl_env_percpu[i];
+
+		lu_context_exit(&cle->ce_ses);
+		lu_context_fini(&cle->ce_ses);
+		lu_env_fini(&cle->ce_lu);
+	}
+}
+
+static void cl_env_percpu_refill(void)
+{
+	int i;
+
+	for_each_possible_cpu(i)
+		lu_env_refill(&cl_env_percpu[i].ce_lu);
+}
+
+void cl_env_percpu_put(struct lu_env *env)
+{
+	struct cl_env *cle;
+	int cpu;
+
+	cpu = smp_processor_id();
+	cle = cl_env_container(env);
+	LASSERT(cle == &cl_env_percpu[cpu]);
+
+	cle->ce_ref--;
+	LASSERT(cle->ce_ref == 0);
+
+	CL_ENV_DEC(busy);
+	cl_env_detach(cle);
+	cle->ce_debug = NULL;
+
+	put_cpu();
+}
+EXPORT_SYMBOL(cl_env_percpu_put);
+
+struct lu_env *cl_env_percpu_get()
+{
+	struct cl_env *cle;
+
+	cle = &cl_env_percpu[get_cpu()];
+	cl_env_init0(cle, __builtin_return_address(0));
+
+	cl_env_attach(cle);
+	return &cle->ce_lu;
+}
+EXPORT_SYMBOL(cl_env_percpu_get);
+
 /*****************************************************************************
  *
  * Temporary prototype thing: mirror obd-devices into cl devices.
@@ -1154,6 +1255,11 @@ int cl_global_init(void)
 	if (result)
 		goto out_lock;
 
+	result = cl_env_percpu_init();
+	if (result)
+		/* no cl_env_percpu_fini on error */
+		goto out_lock;
+
 	return 0;
 out_lock:
 	cl_lock_fini();
@@ -1171,6 +1277,7 @@ out_store:
  */
 void cl_global_fini(void)
 {
+	cl_env_percpu_fini();
 	cl_lock_fini();
 	cl_page_fini();
 	lu_context_key_degister(&cl_key);
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_page.c b/drivers/staging/lustre/lustre/obdclass/cl_page.c
index 8169836..bab8a74 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_page.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_page.c
@@ -123,7 +123,6 @@ static void cl_page_free(const struct lu_env *env, struct cl_page *page)
 	PASSERT(env, page, !page->cp_parent);
 	PASSERT(env, page, page->cp_state == CPS_FREEING);
 
-	might_sleep();
 	while (!list_empty(&page->cp_layers)) {
 		struct cl_page_slice *slice;
 
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367426 — [PATCH 25/43] staging/lustre/llite: rename ccc_device to vvp_device

From: "John L. Hammond" <john.hammond@intel.com>

Rename struct ccc_device to struct vvp_device and merge the CCC device
methods into the VVP device methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13075
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |   2 +-
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 104 +--------------------
 .../staging/lustre/lustre/llite/llite_internal.h   |   2 +-
 drivers/staging/lustre/lustre/llite/vvp_dev.c      |  84 ++++++++++++++++-
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  38 ++++----
 5 files changed, 102 insertions(+), 128 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index f2bb8f8..f2a242b 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -149,7 +149,7 @@ struct cl_device_operations {
 /**
  * Device in the client stack.
  *
- * \see ccc_device, lov_device, lovsub_device, osc_device
+ * \see vvp_device, lov_device, lovsub_device, osc_device
  */
 struct cl_device {
 	/** Super-class. */
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 79cdf83..b0d4a3d 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -159,91 +159,6 @@ struct lu_context_key ccc_session_key = {
 	.lct_fini = ccc_session_key_fini
 };
 
-/* type constructor/destructor: ccc_type_{init,fini,start,stop}(). */
-/* LU_TYPE_INIT_FINI(ccc, &ccc_key, &ccc_session_key); */
-
-int ccc_device_init(const struct lu_env *env, struct lu_device *d,
-		    const char *name, struct lu_device *next)
-{
-	struct ccc_device  *vdv;
-	int rc;
-
-	vdv = lu2ccc_dev(d);
-	vdv->cdv_next = lu2cl_dev(next);
-
-	LASSERT(d->ld_site && next->ld_type);
-	next->ld_site = d->ld_site;
-	rc = next->ld_type->ldt_ops->ldto_device_init(
-			env, next, next->ld_type->ldt_name, NULL);
-	if (rc == 0) {
-		lu_device_get(next);
-		lu_ref_add(&next->ld_reference, "lu-stack", &lu_site_init);
-	}
-	return rc;
-}
-
-struct lu_device *ccc_device_fini(const struct lu_env *env,
-				  struct lu_device *d)
-{
-	return cl2lu_dev(lu2ccc_dev(d)->cdv_next);
-}
-
-struct lu_device *ccc_device_alloc(const struct lu_env *env,
-				   struct lu_device_type *t,
-				   struct lustre_cfg *cfg,
-				   const struct lu_device_operations *luops,
-				   const struct cl_device_operations *clops)
-{
-	struct ccc_device *vdv;
-	struct lu_device  *lud;
-	struct cl_site    *site;
-	int rc;
-
-	vdv = kzalloc(sizeof(*vdv), GFP_NOFS);
-	if (!vdv)
-		return ERR_PTR(-ENOMEM);
-
-	lud = &vdv->cdv_cl.cd_lu_dev;
-	cl_device_init(&vdv->cdv_cl, t);
-	ccc2lu_dev(vdv)->ld_ops = luops;
-	vdv->cdv_cl.cd_ops = clops;
-
-	site = kzalloc(sizeof(*site), GFP_NOFS);
-	if (site) {
-		rc = cl_site_init(site, &vdv->cdv_cl);
-		if (rc == 0) {
-			rc = lu_site_init_finish(&site->cs_lu);
-		} else {
-			LASSERT(!lud->ld_site);
-			CERROR("Cannot init lu_site, rc %d.\n", rc);
-			kfree(site);
-		}
-	} else {
-		rc = -ENOMEM;
-	}
-	if (rc != 0) {
-		ccc_device_free(env, lud);
-		lud = ERR_PTR(rc);
-	}
-	return lud;
-}
-
-struct lu_device *ccc_device_free(const struct lu_env *env,
-				  struct lu_device *d)
-{
-	struct ccc_device *vdv  = lu2ccc_dev(d);
-	struct cl_site    *site = lu2cl_site(d->ld_site);
-	struct lu_device  *next = cl2lu_dev(vdv->cdv_next);
-
-	if (d->ld_site) {
-		cl_site_fini(site);
-		kfree(site);
-	}
-	cl_device_fini(lu2cl_dev(d));
-	kfree(vdv);
-	return next;
-}
-
 int ccc_req_init(const struct lu_env *env, struct cl_device *dev,
 		 struct cl_req *req)
 {
@@ -360,13 +275,13 @@ int ccc_object_init0(const struct lu_env *env,
 int ccc_object_init(const struct lu_env *env, struct lu_object *obj,
 		    const struct lu_object_conf *conf)
 {
-	struct ccc_device *dev = lu2ccc_dev(obj->lo_dev);
+	struct vvp_device *dev = lu2vvp_dev(obj->lo_dev);
 	struct ccc_object *vob = lu2ccc(obj);
 	struct lu_object  *below;
 	struct lu_device  *under;
 	int result;
 
-	under = &dev->cdv_next->cd_lu_dev;
+	under = &dev->vdv_next->cd_lu_dev;
 	below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
 	if (below) {
 		const struct cl_object_conf *cconf;
@@ -779,21 +694,6 @@ again:
  *
  */
 
-struct lu_device *ccc2lu_dev(struct ccc_device *vdv)
-{
-	return &vdv->cdv_cl.cd_lu_dev;
-}
-
-struct ccc_device *lu2ccc_dev(const struct lu_device *d)
-{
-	return container_of0(d, struct ccc_device, cdv_cl.cd_lu_dev);
-}
-
-struct ccc_device *cl2ccc_dev(const struct cl_device *d)
-{
-	return container_of0(d, struct ccc_device, cdv_cl);
-}
-
 struct lu_object *ccc2lu(struct ccc_object *vob)
 {
 	return &vob->cob_cl.co_lu;
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 5686b94..1e9e41b 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -1321,7 +1321,7 @@ static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
 	int opc = (crt == CRT_READ) ? LPROC_LL_OSC_READ :
 				      LPROC_LL_OSC_WRITE;
 
-	ll_stats_ops_tally(ll_s2sbi(cl2ccc_dev(dev)->cdv_sb), opc, rc);
+	ll_stats_ops_tally(ll_s2sbi(cl2vvp_dev(dev)->vdv_sb), opc, rc);
 }
 
 ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io,
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c
index 29d24c9..e934ec8 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_dev.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c
@@ -136,11 +136,85 @@ static const struct cl_device_operations vvp_cl_ops = {
 	.cdo_req_init = ccc_req_init
 };
 
+static struct lu_device *vvp_device_free(const struct lu_env *env,
+					 struct lu_device *d)
+{
+	struct vvp_device *vdv  = lu2vvp_dev(d);
+	struct cl_site    *site = lu2cl_site(d->ld_site);
+	struct lu_device  *next = cl2lu_dev(vdv->vdv_next);
+
+	if (d->ld_site) {
+		cl_site_fini(site);
+		kfree(site);
+	}
+	cl_device_fini(lu2cl_dev(d));
+	kfree(vdv);
+	return next;
+}
+
 static struct lu_device *vvp_device_alloc(const struct lu_env *env,
 					  struct lu_device_type *t,
 					  struct lustre_cfg *cfg)
 {
-	return ccc_device_alloc(env, t, cfg, &vvp_lu_ops, &vvp_cl_ops);
+	struct vvp_device *vdv;
+	struct lu_device  *lud;
+	struct cl_site    *site;
+	int rc;
+
+	vdv = kzalloc(sizeof(*vdv), GFP_NOFS);
+	if (!vdv)
+		return ERR_PTR(-ENOMEM);
+
+	lud = &vdv->vdv_cl.cd_lu_dev;
+	cl_device_init(&vdv->vdv_cl, t);
+	vvp2lu_dev(vdv)->ld_ops = &vvp_lu_ops;
+	vdv->vdv_cl.cd_ops = &vvp_cl_ops;
+
+	site = kzalloc(sizeof(*site), GFP_NOFS);
+	if (site) {
+		rc = cl_site_init(site, &vdv->vdv_cl);
+		if (rc == 0) {
+			rc = lu_site_init_finish(&site->cs_lu);
+		} else {
+			LASSERT(!lud->ld_site);
+			CERROR("Cannot init lu_site, rc %d.\n", rc);
+			kfree(site);
+		}
+	} else {
+		rc = -ENOMEM;
+	}
+	if (rc != 0) {
+		vvp_device_free(env, lud);
+		lud = ERR_PTR(rc);
+	}
+	return lud;
+}
+
+static int vvp_device_init(const struct lu_env *env, struct lu_device *d,
+			   const char *name, struct lu_device *next)
+{
+	struct vvp_device  *vdv;
+	int rc;
+
+	vdv = lu2vvp_dev(d);
+	vdv->vdv_next = lu2cl_dev(next);
+
+	LASSERT(d->ld_site && next->ld_type);
+	next->ld_site = d->ld_site;
+	rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
+						      next->ld_type->ldt_name,
+						      NULL);
+	if (rc == 0) {
+		lu_device_get(next);
+		lu_ref_add(&next->ld_reference, "lu-stack", &lu_site_init);
+	}
+	return rc;
+}
+
+static struct lu_device *vvp_device_fini(const struct lu_env *env,
+					 struct lu_device *d)
+{
+	return cl2lu_dev(lu2vvp_dev(d)->vdv_next);
 }
 
 static const struct lu_device_type_operations vvp_device_type_ops = {
@@ -151,9 +225,9 @@ static const struct lu_device_type_operations vvp_device_type_ops = {
 	.ldto_stop  = vvp_type_stop,
 
 	.ldto_device_alloc = vvp_device_alloc,
-	.ldto_device_free  = ccc_device_free,
-	.ldto_device_init  = ccc_device_init,
-	.ldto_device_fini  = ccc_device_fini
+	.ldto_device_free	= vvp_device_free,
+	.ldto_device_init	= vvp_device_init,
+	.ldto_device_fini	= vvp_device_fini,
 };
 
 struct lu_device_type vvp_device_type = {
@@ -206,7 +280,7 @@ int cl_sb_init(struct super_block *sb)
 		cl = cl_type_setup(env, NULL, &vvp_device_type,
 				   sbi->ll_dt_exp->exp_obd->obd_lu_dev);
 		if (!IS_ERR(cl)) {
-			cl2ccc_dev(cl)->cdv_sb = sb;
+			cl2vvp_dev(cl)->vdv_sb = sb;
 			sbi->ll_cl = cl;
 			sbi->ll_site = cl2lu_dev(cl)->ld_site;
 		}
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index d4fe611..34509f9 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -264,10 +264,10 @@ static inline pgoff_t ccc_index(struct ccc_page *ccc)
 
 struct cl_page *ccc_vmpage_page_transient(struct page *vmpage);
 
-struct ccc_device {
-	struct cl_device    cdv_cl;
-	struct super_block *cdv_sb;
-	struct cl_device   *cdv_next;
+struct vvp_device {
+	struct cl_device    vdv_cl;
+	struct super_block *vdv_sb;
+	struct cl_device   *vdv_next;
 };
 
 struct ccc_lock {
@@ -287,18 +287,6 @@ void *ccc_session_key_init(const struct lu_context *ctx,
 void  ccc_session_key_fini(const struct lu_context *ctx,
 			   struct lu_context_key *key, void *data);
 
-int ccc_device_init(const struct lu_env *env,
-		    struct lu_device *d,
-		    const char *name, struct lu_device *next);
-struct lu_device *ccc_device_fini(const struct lu_env *env,
-				  struct lu_device *d);
-struct lu_device *ccc_device_alloc(const struct lu_env *env,
-				   struct lu_device_type *t,
-				   struct lustre_cfg *cfg,
-				   const struct lu_device_operations *luops,
-				   const struct cl_device_operations *clops);
-struct lu_device *ccc_device_free(const struct lu_env *env,
-				  struct lu_device *d);
 struct lu_object *ccc_object_alloc(const struct lu_env *env,
 				   const struct lu_object_header *hdr,
 				   struct lu_device *dev,
@@ -351,10 +339,22 @@ void ccc_req_attr_set(const struct lu_env *env,
 		      const struct cl_object *obj,
 		      struct cl_req_attr *oa, u64 flags);
 
-struct lu_device *ccc2lu_dev(struct ccc_device *vdv);
+static inline struct lu_device *vvp2lu_dev(struct vvp_device *vdv)
+{
+	return &vdv->vdv_cl.cd_lu_dev;
+}
+
+static inline struct vvp_device *lu2vvp_dev(const struct lu_device *d)
+{
+	return container_of0(d, struct vvp_device, vdv_cl.cd_lu_dev);
+}
+
+static inline struct vvp_device *cl2vvp_dev(const struct cl_device *d)
+{
+	return container_of0(d, struct vvp_device, vdv_cl);
+}
+
 struct lu_object *ccc2lu(struct ccc_object *vob);
-struct ccc_device *lu2ccc_dev(const struct lu_device *d);
-struct ccc_device *cl2ccc_dev(const struct cl_device *d);
 struct ccc_object *lu2ccc(const struct lu_object *obj);
 struct ccc_object *cl2ccc(const struct cl_object *obj);
 struct ccc_lock *cl2ccc_lock(const struct cl_lock_slice *slice);
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367427 — [PATCH 28/43] staging/lustre/llite: rename ccc_lock to vvp_lock

From: "John L. Hammond" <john.hammond@intel.com>

Rename struct ccc_lock to struct vvp_lock and merge the CCC lock
methods into the VVP lock methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13088
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |  6 +--
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 52 ----------------------
 drivers/staging/lustre/lustre/llite/vvp_dev.c      |  6 +++
 drivers/staging/lustre/lustre/llite/vvp_internal.h | 20 ++++-----
 drivers/staging/lustre/lustre/llite/vvp_lock.c     | 38 +++++++++++++---
 5 files changed, 50 insertions(+), 72 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index 3488349..d509f94 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -1227,7 +1227,7 @@ struct cl_lock {
 /**
  * Per-layer part of cl_lock
  *
- * \see ccc_lock, lov_lock, lovsub_lock, osc_lock
+ * \see vvp_lock, lov_lock, lovsub_lock, osc_lock
  */
 struct cl_lock_slice {
 	struct cl_lock		  *cls_lock;
@@ -1254,7 +1254,7 @@ struct cl_lock_operations {
 	 *		@anchor for resources
 	 * \retval -ve	failure
 	 *
-	 * \see ccc_lock_enqueue(), lov_lock_enqueue(), lovsub_lock_enqueue(),
+	 * \see vvp_lock_enqueue(), lov_lock_enqueue(), lovsub_lock_enqueue(),
 	 * \see osc_lock_enqueue()
 	 */
 	int  (*clo_enqueue)(const struct lu_env *env,
@@ -1270,7 +1270,7 @@ struct cl_lock_operations {
 	/**
 	 * Destructor. Frees resources and the slice.
 	 *
-	 * \see ccc_lock_fini(), lov_lock_fini(), lovsub_lock_fini(),
+	 * \see vvp_lock_fini(), lov_lock_fini(), lovsub_lock_fini(),
 	 * \see osc_lock_fini()
 	 */
 	void (*clo_fini)(const struct lu_env *env, struct cl_lock_slice *slice);
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 0762032..8884317 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -67,18 +67,12 @@ static const struct cl_req_operations ccc_req_ops;
  * ccc_ prefix stands for "Common Client Code".
  */
 
-static struct kmem_cache *ccc_lock_kmem;
 static struct kmem_cache *ccc_thread_kmem;
 static struct kmem_cache *ccc_session_kmem;
 static struct kmem_cache *ccc_req_kmem;
 
 static struct lu_kmem_descr ccc_caches[] = {
 	{
-		.ckd_cache = &ccc_lock_kmem,
-		.ckd_name  = "ccc_lock_kmem",
-		.ckd_size  = sizeof(struct ccc_lock)
-	},
-	{
 		.ckd_cache = &ccc_thread_kmem,
 		.ckd_name  = "ccc_thread_kmem",
 		.ckd_size  = sizeof(struct ccc_thread_info),
@@ -221,26 +215,6 @@ void ccc_global_fini(struct lu_device_type *device_type)
 	lu_kmem_fini(ccc_caches);
 }
 
-int ccc_lock_init(const struct lu_env *env,
-		  struct cl_object *obj, struct cl_lock *lock,
-		  const struct cl_io *unused,
-		  const struct cl_lock_operations *lkops)
-{
-	struct ccc_lock *clk;
-	int result;
-
-	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
-
-	clk = kmem_cache_zalloc(ccc_lock_kmem, GFP_NOFS);
-	if (clk) {
-		cl_lock_slice_add(lock, &clk->clk_cl, obj, lkops);
-		result = 0;
-	} else {
-		result = -ENOMEM;
-	}
-	return result;
-}
-
 static void vvp_object_size_lock(struct cl_object *obj)
 {
 	struct inode *inode = vvp_object_inode(obj);
@@ -259,27 +233,6 @@ static void vvp_object_size_unlock(struct cl_object *obj)
 
 /*****************************************************************************
  *
- * Lock operations.
- *
- */
-
-void ccc_lock_fini(const struct lu_env *env, struct cl_lock_slice *slice)
-{
-	struct ccc_lock *clk = cl2ccc_lock(slice);
-
-	kmem_cache_free(ccc_lock_kmem, clk);
-}
-
-int ccc_lock_enqueue(const struct lu_env *env,
-		     const struct cl_lock_slice *slice,
-		     struct cl_io *unused, struct cl_sync_io *anchor)
-{
-	CLOBINVRNT(env, slice->cls_obj, vvp_object_invariant(slice->cls_obj));
-	return 0;
-}
-
-/*****************************************************************************
- *
  * io operations.
  *
  */
@@ -571,11 +524,6 @@ again:
  *
  */
 
-struct ccc_lock *cl2ccc_lock(const struct cl_lock_slice *slice)
-{
-	return container_of(slice, struct ccc_lock, clk_cl);
-}
-
 struct ccc_io *cl2ccc_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice)
 {
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c
index 3891b0d..4b77db3 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_dev.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c
@@ -57,11 +57,17 @@
  * "llite_" (var. "ll_") prefix.
  */
 
+struct kmem_cache *vvp_lock_kmem;
 struct kmem_cache *vvp_object_kmem;
 static struct kmem_cache *vvp_thread_kmem;
 static struct kmem_cache *vvp_session_kmem;
 static struct lu_kmem_descr vvp_caches[] = {
 	{
+		.ckd_cache = &vvp_lock_kmem,
+		.ckd_name  = "vvp_lock_kmem",
+		.ckd_size  = sizeof(struct vvp_lock),
+	},
+	{
 		.ckd_cache = &vvp_object_kmem,
 		.ckd_name  = "vvp_object_kmem",
 		.ckd_size  = sizeof(struct vvp_object),
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index 4991ce7..403d2a7 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -128,6 +128,7 @@ int cl_is_normalio(const struct lu_env *env, const struct cl_io *io);
 extern struct lu_context_key ccc_key;
 extern struct lu_context_key ccc_session_key;
 
+extern struct kmem_cache *vvp_lock_kmem;
 extern struct kmem_cache *vvp_object_kmem;
 
 struct ccc_thread_info {
@@ -269,8 +270,8 @@ struct vvp_device {
 	struct cl_device   *vdv_next;
 };
 
-struct ccc_lock {
-	struct cl_lock_slice clk_cl;
+struct vvp_lock {
+	struct cl_lock_slice vlk_cl;
 };
 
 struct ccc_req {
@@ -291,15 +292,6 @@ int ccc_req_init(const struct lu_env *env, struct cl_device *dev,
 void ccc_umount(const struct lu_env *env, struct cl_device *dev);
 int ccc_global_init(struct lu_device_type *device_type);
 void ccc_global_fini(struct lu_device_type *device_type);
-int ccc_lock_init(const struct lu_env *env, struct cl_object *obj,
-		  struct cl_lock *lock, const struct cl_io *io,
-		  const struct cl_lock_operations *lkops);
-void ccc_lock_delete(const struct lu_env *env,
-		     const struct cl_lock_slice *slice);
-void ccc_lock_fini(const struct lu_env *env, struct cl_lock_slice *slice);
-int ccc_lock_enqueue(const struct lu_env *env,
-		     const struct cl_lock_slice *slice,
-		     struct cl_io *io, struct cl_sync_io *anchor);
 
 int ccc_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 			  __u32 enqflags, enum cl_lock_mode mode,
@@ -359,7 +351,11 @@ static inline struct page *cl2vm_page(const struct cl_page_slice *slice)
 	return cl2vvp_page(slice)->vpg_page;
 }
 
-struct ccc_lock *cl2ccc_lock(const struct cl_lock_slice *slice);
+static inline struct vvp_lock *cl2vvp_lock(const struct cl_lock_slice *slice)
+{
+	return container_of(slice, struct vvp_lock, vlk_cl);
+}
+
 struct ccc_io *cl2ccc_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice);
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice);
diff --git a/drivers/staging/lustre/lustre/llite/vvp_lock.c b/drivers/staging/lustre/lustre/llite/vvp_lock.c
index 8c505a6..f5bd6c2 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_lock.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_lock.c
@@ -40,7 +40,7 @@
 
 #define DEBUG_SUBSYSTEM S_LLITE
 
-#include "../include/obd.h"
+#include "../include/obd_support.h"
 #include "../include/lustre_lite.h"
 
 #include "vvp_internal.h"
@@ -51,13 +51,41 @@
  *
  */
 
+static void vvp_lock_fini(const struct lu_env *env, struct cl_lock_slice *slice)
+{
+	struct vvp_lock *vlk = cl2vvp_lock(slice);
+
+	kmem_cache_free(vvp_lock_kmem, vlk);
+}
+
+static int vvp_lock_enqueue(const struct lu_env *env,
+			    const struct cl_lock_slice *slice,
+			    struct cl_io *unused, struct cl_sync_io *anchor)
+{
+	CLOBINVRNT(env, slice->cls_obj, vvp_object_invariant(slice->cls_obj));
+
+	return 0;
+}
+
 static const struct cl_lock_operations vvp_lock_ops = {
-	.clo_fini      = ccc_lock_fini,
-	.clo_enqueue   = ccc_lock_enqueue
+	.clo_fini	= vvp_lock_fini,
+	.clo_enqueue	= vvp_lock_enqueue,
 };
 
 int vvp_lock_init(const struct lu_env *env, struct cl_object *obj,
-		  struct cl_lock *lock, const struct cl_io *io)
+		  struct cl_lock *lock, const struct cl_io *unused)
 {
-	return ccc_lock_init(env, obj, lock, io, &vvp_lock_ops);
+	struct vvp_lock *vlk;
+	int result;
+
+	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
+
+	vlk = kmem_cache_zalloc(vvp_lock_kmem, GFP_NOFS);
+	if (vlk) {
+		cl_lock_slice_add(lock, &vlk->vlk_cl, obj, &vvp_lock_ops);
+		result = 0;
+	} else {
+		result = -ENOMEM;
+	}
+	return result;
 }
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367429 — [PATCH 43/43] staging/lustre/ldlm: restore the ELC for enqueue

From: Vitaly Fertman <vitaly.fertman@seagate.com>

after LU-4300 enqueue does not ELC anymore, however if enqueue is
agressive (ls -la of a large dir) we may exceed lru-resize limit
quickly because LRUR shrinker and recalc are called not so often.

ELC is to be restored in enqueue.
ELC also should check for the lock weight, in addition to LRUR.
ELC can also keep "skipped" locks, i.e. once checked for the weight
and left in the lru - let LRUR take care about them later.
LRUR is to be left untouched, no weight logic, otherwise LU-5727
appears and OPEN locks do not get canceled.

Xyratex-bug-id: MRP-2550
Signed-off-by: Vitaly Fertman <vitaly.fertman@seagate.com>
Reviewed-on: http://review.whamcloud.com/14342
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6390
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_internal.h |  7 +++---
 drivers/staging/lustre/lustre/ldlm/ldlm_request.c  | 25 ++++++++++++++++++----
 drivers/staging/lustre/lustre/osc/osc_request.c    |  4 ++--
 3 files changed, 27 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h b/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
index e21373e..e31d84a 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
@@ -95,9 +95,10 @@ enum {
 	LDLM_CANCEL_PASSED = 1 << 1, /* Cancel passed number of locks. */
 	LDLM_CANCEL_SHRINK = 1 << 2, /* Cancel locks from shrinker. */
 	LDLM_CANCEL_LRUR   = 1 << 3, /* Cancel locks from lru resize. */
-	LDLM_CANCEL_NO_WAIT = 1 << 4 /* Cancel locks w/o blocking (neither
-				      * sending nor waiting for any rpcs)
-				      */
+	LDLM_CANCEL_NO_WAIT = 1 << 4, /* Cancel locks w/o blocking (neither
+				       * sending nor waiting for any rpcs)
+				       */
+	LDLM_CANCEL_LRUR_NO_WAIT = 1 << 5, /* LRUR + NO_WAIT */
 };
 
 int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr,
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
index 48e9828..9aa4c2d 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
@@ -601,7 +601,7 @@ int ldlm_prep_elc_req(struct obd_export *exp, struct ptlrpc_request *req,
 		avail = ldlm_capsule_handles_avail(pill, RCL_CLIENT, canceloff);
 
 		flags = ns_connect_lru_resize(ns) ?
-			LDLM_CANCEL_LRUR : LDLM_CANCEL_AGED;
+			LDLM_CANCEL_LRUR_NO_WAIT : LDLM_CANCEL_AGED;
 		to_free = !ns_connect_lru_resize(ns) &&
 			  opc == LDLM_ENQUEUE ? 1 : 0;
 
@@ -1146,7 +1146,7 @@ static ldlm_policy_res_t ldlm_cancel_no_wait_policy(struct ldlm_namespace *ns,
 	switch (lock->l_resource->lr_type) {
 	case LDLM_EXTENT:
 	case LDLM_IBITS:
-			if (ns->ns_cancel && ns->ns_cancel(lock) != 0)
+		if (ns->ns_cancel && ns->ns_cancel(lock) != 0)
 			break;
 	default:
 		result = LDLM_POLICY_SKIP_LOCK;
@@ -1251,6 +1251,21 @@ static ldlm_policy_res_t ldlm_cancel_aged_policy(struct ldlm_namespace *ns,
 	return LDLM_POLICY_CANCEL_LOCK;
 }
 
+static ldlm_policy_res_t
+ldlm_cancel_lrur_no_wait_policy(struct ldlm_namespace *ns,
+				struct ldlm_lock *lock,
+				int unused, int added,
+				int count)
+{
+	ldlm_policy_res_t result;
+
+	result = ldlm_cancel_lrur_policy(ns, lock, unused, added, count);
+	if (result == LDLM_POLICY_KEEP_LOCK)
+		return result;
+
+	return ldlm_cancel_no_wait_policy(ns, lock, unused, added, count);
+}
+
 /**
  * Callback function for default policy. Makes decision whether to keep \a lock
  * in LRU for current LRU size \a unused, added in current scan \a added and
@@ -1290,6 +1305,8 @@ ldlm_cancel_lru_policy(struct ldlm_namespace *ns, int flags)
 			return ldlm_cancel_lrur_policy;
 		else if (flags & LDLM_CANCEL_PASSED)
 			return ldlm_cancel_passed_policy;
+		else if (flags & LDLM_CANCEL_LRUR_NO_WAIT)
+			return ldlm_cancel_lrur_no_wait_policy;
 	} else {
 		if (flags & LDLM_CANCEL_AGED)
 			return ldlm_cancel_aged_policy;
@@ -1338,6 +1355,7 @@ static int ldlm_prepare_lru_list(struct ldlm_namespace *ns,
 	ldlm_cancel_lru_policy_t pf;
 	struct ldlm_lock *lock, *next;
 	int added = 0, unused, remained;
+	int no_wait = flags & (LDLM_CANCEL_NO_WAIT | LDLM_CANCEL_LRUR_NO_WAIT);
 
 	spin_lock(&ns->ns_lock);
 	unused = ns->ns_nr_unused;
@@ -1365,8 +1383,7 @@ static int ldlm_prepare_lru_list(struct ldlm_namespace *ns,
 			/* No locks which got blocking requests. */
 			LASSERT(!(lock->l_flags & LDLM_FL_BL_AST));
 
-			if (flags & LDLM_CANCEL_NO_WAIT &&
-			    lock->l_flags & LDLM_FL_SKIPPED)
+			if (no_wait && lock->l_flags & LDLM_FL_SKIPPED)
 				/* already processed */
 				continue;
 
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index a6dc517..5b9f72c 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -2297,8 +2297,8 @@ no_match:
 		if (!req)
 			return -ENOMEM;
 
-		rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_ENQUEUE);
-		if (rc < 0) {
+		rc = ldlm_prep_enqueue_req(exp, req, NULL, 0);
+		if (rc) {
 			ptlrpc_request_free(req);
 			return rc;
 		}
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367430 — [PATCH 31/43] staging/lustre/llite: use vui prefix for struct vvp_io members

From: "John L. Hammond" <john.hammond@intel.com>

Rename members of struct vvp_io to used to start with vui_ rather than
cui_.  Rename several instances of struct vvp_io * from cio to vio.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13363
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/llite/file.c         |  20 ++--
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   |  34 +++---
 drivers/staging/lustre/lustre/llite/llite_mmap.c   |   6 +-
 drivers/staging/lustre/lustre/llite/rw.c           |  24 ++--
 drivers/staging/lustre/lustre/llite/rw26.c         |  20 ++--
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  38 +++---
 drivers/staging/lustre/lustre/llite/vvp_io.c       | 131 +++++++++++----------
 drivers/staging/lustre/lustre/llite/vvp_page.c     |   4 +-
 8 files changed, 139 insertions(+), 138 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 27e7e65..63aa080 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -1135,18 +1135,18 @@ restart:
 	ll_io_init(io, file, iot == CIT_WRITE);
 
 	if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
-		struct vvp_io *cio = vvp_env_io(env);
+		struct vvp_io *vio = vvp_env_io(env);
 		int write_mutex_locked = 0;
 
-		cio->cui_fd  = LUSTRE_FPRIVATE(file);
-		cio->cui_io_subtype = args->via_io_subtype;
+		vio->vui_fd  = LUSTRE_FPRIVATE(file);
+		vio->vui_io_subtype = args->via_io_subtype;
 
-		switch (cio->cui_io_subtype) {
+		switch (vio->vui_io_subtype) {
 		case IO_NORMAL:
-			cio->cui_iter = args->u.normal.via_iter;
-			cio->cui_iocb = args->u.normal.via_iocb;
+			vio->vui_iter = args->u.normal.via_iter;
+			vio->vui_iocb = args->u.normal.via_iocb;
 			if ((iot == CIT_WRITE) &&
-			    !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
+			    !(vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
 				if (mutex_lock_interruptible(&lli->
 							       lli_write_mutex)) {
 					result = -ERESTARTSYS;
@@ -1157,11 +1157,11 @@ restart:
 			down_read(&lli->lli_trunc_sem);
 			break;
 		case IO_SPLICE:
-			cio->u.splice.cui_pipe = args->u.splice.via_pipe;
-			cio->u.splice.cui_flags = args->u.splice.via_flags;
+			vio->u.splice.vui_pipe = args->u.splice.via_pipe;
+			vio->u.splice.vui_flags = args->u.splice.via_flags;
 			break;
 		default:
-			CERROR("Unknown IO type - %u\n", cio->cui_io_subtype);
+			CERROR("Unknown IO type - %u\n", vio->vui_io_subtype);
 			LBUG();
 		}
 		result = cl_io_loop(env, io);
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 9a9d706..630c371 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -210,19 +210,19 @@ int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 			  __u32 enqflags, enum cl_lock_mode mode,
 			  pgoff_t start, pgoff_t end)
 {
-	struct vvp_io *cio = vvp_env_io(env);
-	struct cl_lock_descr   *descr = &cio->cui_link.cill_descr;
+	struct vvp_io          *vio   = vvp_env_io(env);
+	struct cl_lock_descr   *descr = &vio->vui_link.cill_descr;
 	struct cl_object       *obj   = io->ci_obj;
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
 
 	CDEBUG(D_VFSTRACE, "lock: %d [%lu, %lu]\n", mode, start, end);
 
-	memset(&cio->cui_link, 0, sizeof(cio->cui_link));
+	memset(&vio->vui_link, 0, sizeof(vio->vui_link));
 
-	if (cio->cui_fd && (cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
+	if (vio->vui_fd && (vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
 		descr->cld_mode = CLM_GROUP;
-		descr->cld_gid  = cio->cui_fd->fd_grouplock.cg_gid;
+		descr->cld_gid  = vio->vui_fd->fd_grouplock.cg_gid;
 	} else {
 		descr->cld_mode  = mode;
 	}
@@ -231,19 +231,19 @@ int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 	descr->cld_end   = end;
 	descr->cld_enq_flags = enqflags;
 
-	cl_io_lock_add(env, io, &cio->cui_link);
+	cl_io_lock_add(env, io, &vio->vui_link);
 	return 0;
 }
 
 void vvp_io_update_iov(const struct lu_env *env,
-		       struct vvp_io *cio, struct cl_io *io)
+		       struct vvp_io *vio, struct cl_io *io)
 {
 	size_t size = io->u.ci_rw.crw_count;
 
-	if (!cl_is_normalio(env, io) || !cio->cui_iter)
+	if (!cl_is_normalio(env, io) || !vio->vui_iter)
 		return;
 
-	iov_iter_truncate(cio->cui_iter, size);
+	iov_iter_truncate(vio->vui_iter, size);
 }
 
 int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
@@ -266,7 +266,7 @@ void vvp_io_advance(const struct lu_env *env,
 		    const struct cl_io_slice *ios,
 		    size_t nob)
 {
-	struct vvp_io    *cio = cl2vvp_io(env, ios);
+	struct vvp_io    *vio = cl2vvp_io(env, ios);
 	struct cl_io     *io  = ios->cis_io;
 	struct cl_object *obj = ios->cis_io->ci_obj;
 
@@ -275,7 +275,7 @@ void vvp_io_advance(const struct lu_env *env,
 	if (!cl_is_normalio(env, io))
 		return;
 
-	iov_iter_reexpand(cio->cui_iter, cio->cui_tot_count  -= nob);
+	iov_iter_reexpand(vio->vui_iter, vio->vui_tot_count  -= nob);
 }
 
 /**
@@ -461,13 +461,13 @@ int cl_setattr_ost(struct inode *inode, const struct iattr *attr)
 
 again:
 	if (cl_io_init(env, io, CIT_SETATTR, io->ci_obj) == 0) {
-		struct vvp_io *cio = vvp_env_io(env);
+		struct vvp_io *vio = vvp_env_io(env);
 
 		if (attr->ia_valid & ATTR_FILE)
 			/* populate the file descriptor for ftruncate to honor
 			 * group lock - see LU-787
 			 */
-			cio->cui_fd = LUSTRE_FPRIVATE(attr->ia_file);
+			vio->vui_fd = LUSTRE_FPRIVATE(attr->ia_file);
 
 		result = cl_io_loop(env, io);
 	} else {
@@ -496,12 +496,12 @@ again:
 struct vvp_io *cl2vvp_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice)
 {
-	struct vvp_io *cio;
+	struct vvp_io *vio;
 
-	cio = container_of(slice, struct vvp_io, cui_cl);
-	LASSERT(cio == vvp_env_io(env));
+	vio = container_of(slice, struct vvp_io, vui_cl);
+	LASSERT(vio == vvp_env_io(env));
 
-	return cio;
+	return vio;
 }
 
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice)
diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c
index 7c214f8..a7693c5 100644
--- a/drivers/staging/lustre/lustre/llite/llite_mmap.c
+++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c
@@ -146,14 +146,14 @@ ll_fault_io_init(struct vm_area_struct *vma, struct lu_env **env_ret,
 
 	rc = cl_io_init(env, io, CIT_FAULT, io->ci_obj);
 	if (rc == 0) {
-		struct vvp_io *cio = vvp_env_io(env);
+		struct vvp_io *vio = vvp_env_io(env);
 		struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
 
-		LASSERT(cio->cui_cl.cis_io == io);
+		LASSERT(vio->vui_cl.cis_io == io);
 
 		/* mmap lock must be MANDATORY it has to cache pages. */
 		io->ci_lockreq = CILR_MANDATORY;
-		cio->cui_fd = fd;
+		vio->vui_fd = fd;
 	} else {
 		LASSERT(rc < 0);
 		cl_io_fini(env, io);
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c
index da44107..634f0bb 100644
--- a/drivers/staging/lustre/lustre/llite/rw.c
+++ b/drivers/staging/lustre/lustre/llite/rw.c
@@ -90,7 +90,7 @@ struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage)
 	struct lu_env    *env;
 	struct cl_io     *io;
 	struct cl_object *clob;
-	struct vvp_io    *cio;
+	struct vvp_io    *vio;
 
 	int refcheck;
 	int result = 0;
@@ -108,8 +108,8 @@ struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage)
 	lcc->lcc_refcheck = refcheck;
 	lcc->lcc_cookie = current;
 
-	cio = vvp_env_io(env);
-	io = cio->cui_cl.cis_io;
+	vio = vvp_env_io(env);
+	io = vio->vui_cl.cis_io;
 	lcc->lcc_io = io;
 	if (!io) {
 		struct inode *inode = file_inode(file);
@@ -125,7 +125,7 @@ struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage)
 		struct cl_page   *page;
 
 		LASSERT(io->ci_state == CIS_IO_GOING);
-		LASSERT(cio->cui_fd == LUSTRE_FPRIVATE(file));
+		LASSERT(vio->vui_fd == LUSTRE_FPRIVATE(file));
 		page = cl_page_find(env, clob, vmpage->index, vmpage,
 				    CPT_CACHEABLE);
 		if (!IS_ERR(page)) {
@@ -553,10 +553,10 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io,
 	spin_lock(&ras->ras_lock);
 
 	/* Enlarge the RA window to encompass the full read */
-	if (vio->cui_ra_valid &&
+	if (vio->vui_ra_valid &&
 	    ras->ras_window_start + ras->ras_window_len <
-	    vio->cui_ra_start + vio->cui_ra_count) {
-		ras->ras_window_len = vio->cui_ra_start + vio->cui_ra_count -
+	    vio->vui_ra_start + vio->vui_ra_count) {
+		ras->ras_window_len = vio->vui_ra_start + vio->vui_ra_count -
 				      ras->ras_window_start;
 	}
 
@@ -615,15 +615,15 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io,
 	CDEBUG(D_READA, DFID ": ria: %lu/%lu, bead: %lu/%lu, hit: %d\n",
 	       PFID(lu_object_fid(&clob->co_lu)),
 	       ria->ria_start, ria->ria_end,
-	       vio->cui_ra_valid ? vio->cui_ra_start : 0,
-	       vio->cui_ra_valid ? vio->cui_ra_count : 0,
+	       vio->vui_ra_valid ? vio->vui_ra_start : 0,
+	       vio->vui_ra_valid ? vio->vui_ra_count : 0,
 	       hit);
 
 	/* at least to extend the readahead window to cover current read */
-	if (!hit && vio->cui_ra_valid &&
-	    vio->cui_ra_start + vio->cui_ra_count > ria->ria_start) {
+	if (!hit && vio->vui_ra_valid &&
+	    vio->vui_ra_start + vio->vui_ra_count > ria->ria_start) {
 		/* to the end of current read window. */
-		mlen = vio->cui_ra_start + vio->cui_ra_count - ria->ria_start;
+		mlen = vio->vui_ra_start + vio->vui_ra_count - ria->ria_start;
 		/* trim to RPC boundary */
 		start = ria->ria_start & (PTLRPC_MAX_BRW_PAGES - 1);
 		mlen = min(mlen, PTLRPC_MAX_BRW_PAGES - start);
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
index 2f69634..106473e 100644
--- a/drivers/staging/lustre/lustre/llite/rw26.c
+++ b/drivers/staging/lustre/lustre/llite/rw26.c
@@ -376,7 +376,7 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 
 	env = cl_env_get(&refcheck);
 	LASSERT(!IS_ERR(env));
-	io = vvp_env_io(env)->cui_cl.cis_io;
+	io = vvp_env_io(env)->vui_cl.cis_io;
 	LASSERT(io);
 
 	/* 0. Need locking between buffered and direct access. and race with
@@ -439,10 +439,10 @@ out:
 		inode_unlock(inode);
 
 	if (tot_bytes > 0) {
-		struct vvp_io *cio = vvp_env_io(env);
+		struct vvp_io *vio = vvp_env_io(env);
 
 		/* no commit async for direct IO */
-		cio->u.write.cui_written += tot_bytes;
+		vio->u.write.vui_written += tot_bytes;
 	}
 
 	cl_env_put(env, &refcheck);
@@ -513,8 +513,8 @@ static int ll_write_begin(struct file *file, struct address_space *mapping,
 	/* To avoid deadlock, try to lock page first. */
 	vmpage = grab_cache_page_nowait(mapping, index);
 	if (unlikely(!vmpage || PageDirty(vmpage) || PageWriteback(vmpage))) {
-		struct vvp_io *cio = vvp_env_io(env);
-		struct cl_page_list *plist = &cio->u.write.cui_queue;
+		struct vvp_io *vio = vvp_env_io(env);
+		struct cl_page_list *plist = &vio->u.write.vui_queue;
 
 		/* if the page is already in dirty cache, we have to commit
 		 * the pages right now; otherwise, it may cause deadlock
@@ -595,7 +595,7 @@ static int ll_write_end(struct file *file, struct address_space *mapping,
 	struct ll_cl_context *lcc = fsdata;
 	struct lu_env *env;
 	struct cl_io *io;
-	struct vvp_io *cio;
+	struct vvp_io *vio;
 	struct cl_page *page;
 	unsigned from = pos & (PAGE_CACHE_SIZE - 1);
 	bool unplug = false;
@@ -606,21 +606,21 @@ static int ll_write_end(struct file *file, struct address_space *mapping,
 	env  = lcc->lcc_env;
 	page = lcc->lcc_page;
 	io   = lcc->lcc_io;
-	cio  = vvp_env_io(env);
+	vio  = vvp_env_io(env);
 
 	LASSERT(cl_page_is_owned(page, io));
 	if (copied > 0) {
-		struct cl_page_list *plist = &cio->u.write.cui_queue;
+		struct cl_page_list *plist = &vio->u.write.vui_queue;
 
 		lcc->lcc_page = NULL; /* page will be queued */
 
 		/* Add it into write queue */
 		cl_page_list_add(plist, page);
 		if (plist->pl_nr == 1) /* first page */
-			cio->u.write.cui_from = from;
+			vio->u.write.vui_from = from;
 		else
 			LASSERT(from == 0);
-		cio->u.write.cui_to = from + copied;
+		vio->u.write.vui_to = from + copied;
 
 		/* We may have one full RPC, commit it soon */
 		if (plist->pl_nr >= PTLRPC_MAX_BRW_PAGES)
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index 443485c..e04f23e 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -94,16 +94,16 @@ enum vvp_io_subtype {
  */
 struct vvp_io {
 	/** super class */
-	struct cl_io_slice     cui_cl;
-	struct cl_io_lock_link cui_link;
+	struct cl_io_slice     vui_cl;
+	struct cl_io_lock_link vui_link;
 	/**
 	 * I/O vector information to or from which read/write is going.
 	 */
-	struct iov_iter *cui_iter;
+	struct iov_iter *vui_iter;
 	/**
 	 * Total size for the left IO.
 	 */
-	size_t cui_tot_count;
+	size_t vui_tot_count;
 
 	union {
 		struct vvp_fault_io {
@@ -131,37 +131,37 @@ struct vvp_io {
 			bool		ft_flags_valid;
 		} fault;
 		struct {
-			enum ccc_setattr_lock_type cui_local_lock;
+			enum ccc_setattr_lock_type vui_local_lock;
 		} setattr;
 		struct {
-			struct pipe_inode_info	*cui_pipe;
-			unsigned int		 cui_flags;
+			struct pipe_inode_info	*vui_pipe;
+			unsigned int		 vui_flags;
 		} splice;
 		struct {
-			struct cl_page_list cui_queue;
-			unsigned long cui_written;
-			int cui_from;
-			int cui_to;
+			struct cl_page_list vui_queue;
+			unsigned long vui_written;
+			int vui_from;
+			int vui_to;
 		} write;
 	} u;
 
-	enum vvp_io_subtype	cui_io_subtype;
+	enum vvp_io_subtype	vui_io_subtype;
 
 	/**
 	 * Layout version when this IO is initialized
 	 */
-	__u32		cui_layout_gen;
+	__u32			vui_layout_gen;
 	/**
 	 * File descriptor against which IO is done.
 	 */
-	struct ll_file_data *cui_fd;
-	struct kiocb *cui_iocb;
+	struct ll_file_data	*vui_fd;
+	struct kiocb		*vui_iocb;
 
 	/* Readahead state. */
-	pgoff_t	cui_ra_start;
-	pgoff_t	cui_ra_count;
-	/* Set when cui_ra_{start,count} have been initialized. */
-	bool		cui_ra_valid;
+	pgoff_t	vui_ra_start;
+	pgoff_t	vui_ra_count;
+	/* Set when vui_ra_{start,count} have been initialized. */
+	bool		vui_ra_valid;
 };
 
 /**
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index 1059c63..53cf2be 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -56,7 +56,7 @@ int cl_is_normalio(const struct lu_env *env, const struct cl_io *io)
 
 	LASSERT(io->ci_type == CIT_READ || io->ci_type == CIT_WRITE);
 
-	return vio->cui_io_subtype == IO_NORMAL;
+	return vio->vui_io_subtype == IO_NORMAL;
 }
 
 /**
@@ -69,7 +69,7 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 			       struct inode *inode)
 {
 	struct ll_inode_info	*lli = ll_i2info(inode);
-	struct vvp_io		*cio = vvp_env_io(env);
+	struct vvp_io		*vio = vvp_env_io(env);
 	bool rc = true;
 
 	switch (io->ci_type) {
@@ -78,7 +78,7 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 		/* don't need lock here to check lli_layout_gen as we have held
 		 * extent lock and GROUP lock has to hold to swap layout
 		 */
-		if (ll_layout_version_get(lli) != cio->cui_layout_gen) {
+		if (ll_layout_version_get(lli) != vio->vui_layout_gen) {
 			io->ci_need_restart = 1;
 			/* this will return application a short read/write */
 			io->ci_continue = 0;
@@ -102,12 +102,12 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 static int vvp_io_write_iter_init(const struct lu_env *env,
 				  const struct cl_io_slice *ios)
 {
-	struct vvp_io *cio = cl2vvp_io(env, ios);
+	struct vvp_io *vio = cl2vvp_io(env, ios);
 
-	cl_page_list_init(&cio->u.write.cui_queue);
-	cio->u.write.cui_written = 0;
-	cio->u.write.cui_from = 0;
-	cio->u.write.cui_to = PAGE_SIZE;
+	cl_page_list_init(&vio->u.write.vui_queue);
+	vio->u.write.vui_written = 0;
+	vio->u.write.vui_from = 0;
+	vio->u.write.vui_to = PAGE_SIZE;
 
 	return 0;
 }
@@ -115,9 +115,9 @@ static int vvp_io_write_iter_init(const struct lu_env *env,
 static void vvp_io_write_iter_fini(const struct lu_env *env,
 				   const struct cl_io_slice *ios)
 {
-	struct vvp_io *cio = cl2vvp_io(env, ios);
+	struct vvp_io *vio = cl2vvp_io(env, ios);
 
-	LASSERT(cio->u.write.cui_queue.pl_nr == 0);
+	LASSERT(vio->u.write.vui_queue.pl_nr == 0);
 }
 
 static int vvp_io_fault_iter_init(const struct lu_env *env,
@@ -126,7 +126,7 @@ static int vvp_io_fault_iter_init(const struct lu_env *env,
 	struct vvp_io *vio   = cl2vvp_io(env, ios);
 	struct inode  *inode = vvp_object_inode(ios->cis_obj);
 
-	LASSERT(inode == file_inode(vio->cui_fd->fd_file));
+	LASSERT(inode == file_inode(vio->vui_fd->fd_file));
 	vio->u.fault.ft_mtime = inode->i_mtime.tv_sec;
 	return 0;
 }
@@ -135,7 +135,7 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios)
 {
 	struct cl_io     *io  = ios->cis_io;
 	struct cl_object *obj = io->ci_obj;
-	struct vvp_io    *cio = cl2vvp_io(env, ios);
+	struct vvp_io    *vio = cl2vvp_io(env, ios);
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
 
@@ -143,7 +143,7 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios)
 	       " ignore/verify layout %d/%d, layout version %d restore needed %d\n",
 	       PFID(lu_object_fid(&obj->co_lu)),
 	       io->ci_ignore_layout, io->ci_verify_layout,
-	       cio->cui_layout_gen, io->ci_restore_needed);
+	       vio->vui_layout_gen, io->ci_restore_needed);
 
 	if (io->ci_restore_needed == 1) {
 		int	rc;
@@ -178,12 +178,12 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios)
 
 		/* check layout version */
 		ll_layout_refresh(vvp_object_inode(obj), &gen);
-		io->ci_need_restart = cio->cui_layout_gen != gen;
+		io->ci_need_restart = vio->vui_layout_gen != gen;
 		if (io->ci_need_restart) {
 			CDEBUG(D_VFSTRACE,
 			       DFID" layout changed from %d to %d.\n",
 			       PFID(lu_object_fid(&obj->co_lu)),
-			       cio->cui_layout_gen, gen);
+			       vio->vui_layout_gen, gen);
 			/* today successful restore is the only possible case */
 			/* restore was done, clear restoring state */
 			ll_i2info(vvp_object_inode(obj))->lli_flags &=
@@ -239,14 +239,14 @@ static int vvp_mmap_locks(const struct lu_env *env,
 	if (!cl_is_normalio(env, io))
 		return 0;
 
-	if (!vio->cui_iter) /* nfs or loop back device write */
+	if (!vio->vui_iter) /* nfs or loop back device write */
 		return 0;
 
 	/* No MM (e.g. NFS)? No vmas too. */
 	if (!mm)
 		return 0;
 
-	iov_for_each(iov, i, *(vio->cui_iter)) {
+	iov_for_each(iov, i, *vio->vui_iter) {
 		addr = (unsigned long)iov.iov_base;
 		count = iov.iov_len;
 		if (count == 0)
@@ -306,17 +306,17 @@ static int vvp_mmap_locks(const struct lu_env *env,
 static int vvp_io_rw_lock(const struct lu_env *env, struct cl_io *io,
 			  enum cl_lock_mode mode, loff_t start, loff_t end)
 {
-	struct vvp_io *cio = vvp_env_io(env);
+	struct vvp_io *vio = vvp_env_io(env);
 	int result;
 	int ast_flags = 0;
 
 	LASSERT(io->ci_type == CIT_READ || io->ci_type == CIT_WRITE);
 
-	vvp_io_update_iov(env, cio, io);
+	vvp_io_update_iov(env, vio, io);
 
 	if (io->u.ci_rw.crw_nonblock)
 		ast_flags |= CEF_NONBLOCK;
-	result = vvp_mmap_locks(env, cio, io);
+	result = vvp_mmap_locks(env, vio, io);
 	if (result == 0)
 		result = vvp_io_one_lock(env, io, ast_flags, mode, start, end);
 	return result;
@@ -374,14 +374,14 @@ static int vvp_io_setattr_iter_init(const struct lu_env *env,
 }
 
 /**
- * Implementation of cl_io_operations::cio_lock() method for CIT_SETATTR io.
+ * Implementation of cl_io_operations::vio_lock() method for CIT_SETATTR io.
  *
  * Handles "lockless io" mode when extent locking is done by server.
  */
 static int vvp_io_setattr_lock(const struct lu_env *env,
 			       const struct cl_io_slice *ios)
 {
-	struct vvp_io *cio = vvp_env_io(env);
+	struct vvp_io *vio = vvp_env_io(env);
 	struct cl_io  *io  = ios->cis_io;
 	__u64 new_size;
 	__u32 enqflags = 0;
@@ -398,7 +398,8 @@ static int vvp_io_setattr_lock(const struct lu_env *env,
 			return 0;
 		new_size = 0;
 	}
-	cio->u.setattr.cui_local_lock = SETATTR_EXTENT_LOCK;
+
+	vio->u.setattr.vui_local_lock = SETATTR_EXTENT_LOCK;
 
 	return vvp_io_one_lock(env, io, enqflags, CLM_WRITE,
 			       new_size, OBD_OBJECT_EOF);
@@ -498,12 +499,12 @@ static int vvp_io_read_start(const struct lu_env *env,
 	struct cl_io      *io    = ios->cis_io;
 	struct cl_object  *obj   = io->ci_obj;
 	struct inode      *inode = vvp_object_inode(obj);
-	struct file       *file  = vio->cui_fd->fd_file;
+	struct file       *file  = vio->vui_fd->fd_file;
 
 	int     result;
 	loff_t  pos = io->u.ci_rd.rd.crw_pos;
 	long    cnt = io->u.ci_rd.rd.crw_count;
-	long    tot = vio->cui_tot_count;
+	long    tot = vio->vui_tot_count;
 	int     exceed = 0;
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
@@ -524,27 +525,27 @@ static int vvp_io_read_start(const struct lu_env *env,
 			 inode->i_ino, cnt, pos, i_size_read(inode));
 
 	/* turn off the kernel's read-ahead */
-	vio->cui_fd->fd_file->f_ra.ra_pages = 0;
+	vio->vui_fd->fd_file->f_ra.ra_pages = 0;
 
 	/* initialize read-ahead window once per syscall */
-	if (!vio->cui_ra_valid) {
-		vio->cui_ra_valid = true;
-		vio->cui_ra_start = cl_index(obj, pos);
-		vio->cui_ra_count = cl_index(obj, tot + PAGE_CACHE_SIZE - 1);
+	if (!vio->vui_ra_valid) {
+		vio->vui_ra_valid = true;
+		vio->vui_ra_start = cl_index(obj, pos);
+		vio->vui_ra_count = cl_index(obj, tot + PAGE_CACHE_SIZE - 1);
 		ll_ras_enter(file);
 	}
 
 	/* BUG: 5972 */
 	file_accessed(file);
-	switch (vio->cui_io_subtype) {
+	switch (vio->vui_io_subtype) {
 	case IO_NORMAL:
-		LASSERT(vio->cui_iocb->ki_pos == pos);
-		result = generic_file_read_iter(vio->cui_iocb, vio->cui_iter);
+		LASSERT(vio->vui_iocb->ki_pos == pos);
+		result = generic_file_read_iter(vio->vui_iocb, vio->vui_iter);
 		break;
 	case IO_SPLICE:
 		result = generic_file_splice_read(file, &pos,
-						  vio->u.splice.cui_pipe, cnt,
-						  vio->u.splice.cui_flags);
+						  vio->u.splice.vui_pipe, cnt,
+						  vio->u.splice.vui_flags);
 		/* LU-1109: do splice read stripe by stripe otherwise if it
 		 * may make nfsd stuck if this read occupied all internal pipe
 		 * buffers.
@@ -552,7 +553,7 @@ static int vvp_io_read_start(const struct lu_env *env,
 		io->ci_continue = 0;
 		break;
 	default:
-		CERROR("Wrong IO type %u\n", vio->cui_io_subtype);
+		CERROR("Wrong IO type %u\n", vio->vui_io_subtype);
 		LBUG();
 	}
 
@@ -562,7 +563,7 @@ out:
 			io->ci_continue = 0;
 		io->ci_nob += result;
 		ll_rw_stats_tally(ll_i2sbi(inode), current->pid,
-				  vio->cui_fd, pos, result, READ);
+				  vio->vui_fd, pos, result, READ);
 		result = 0;
 	}
 	return result;
@@ -674,24 +675,24 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 {
 	struct cl_object *obj = io->ci_obj;
 	struct inode *inode = vvp_object_inode(obj);
-	struct vvp_io *cio = vvp_env_io(env);
-	struct cl_page_list *queue = &cio->u.write.cui_queue;
+	struct vvp_io *vio = vvp_env_io(env);
+	struct cl_page_list *queue = &vio->u.write.vui_queue;
 	struct cl_page *page;
 	int rc = 0;
 	int bytes = 0;
-	unsigned int npages = cio->u.write.cui_queue.pl_nr;
+	unsigned int npages = vio->u.write.vui_queue.pl_nr;
 
 	if (npages == 0)
 		return 0;
 
 	CDEBUG(D_VFSTRACE, "commit async pages: %d, from %d, to %d\n",
-	       npages, cio->u.write.cui_from, cio->u.write.cui_to);
+	       npages, vio->u.write.vui_from, vio->u.write.vui_to);
 
 	LASSERT(page_list_sanity_check(obj, queue));
 
 	/* submit IO with async write */
 	rc = cl_io_commit_async(env, io, queue,
-				cio->u.write.cui_from, cio->u.write.cui_to,
+				vio->u.write.vui_from, vio->u.write.vui_to,
 				write_commit_callback);
 	npages -= queue->pl_nr; /* already committed pages */
 	if (npages > 0) {
@@ -699,18 +700,18 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 		bytes = npages << PAGE_SHIFT;
 
 		/* first page */
-		bytes -= cio->u.write.cui_from;
+		bytes -= vio->u.write.vui_from;
 		if (queue->pl_nr == 0) /* last page */
-			bytes -= PAGE_SIZE - cio->u.write.cui_to;
+			bytes -= PAGE_SIZE - vio->u.write.vui_to;
 		LASSERTF(bytes > 0, "bytes = %d, pages = %d\n", bytes, npages);
 
-		cio->u.write.cui_written += bytes;
+		vio->u.write.vui_written += bytes;
 
 		CDEBUG(D_VFSTRACE, "Committed %d pages %d bytes, tot: %ld\n",
-		       npages, bytes, cio->u.write.cui_written);
+		       npages, bytes, vio->u.write.vui_written);
 
 		/* the first page must have been written. */
-		cio->u.write.cui_from = 0;
+		vio->u.write.vui_from = 0;
 	}
 	LASSERT(page_list_sanity_check(obj, queue));
 	LASSERT(ergo(rc == 0, queue->pl_nr == 0));
@@ -718,10 +719,10 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 	/* out of quota, try sync write */
 	if (rc == -EDQUOT && !cl_io_is_mkwrite(io)) {
 		rc = vvp_io_commit_sync(env, io, queue,
-					cio->u.write.cui_from,
-					cio->u.write.cui_to);
+					vio->u.write.vui_from,
+					vio->u.write.vui_to);
 		if (rc > 0) {
-			cio->u.write.cui_written += rc;
+			vio->u.write.vui_written += rc;
 			rc = 0;
 		}
 	}
@@ -753,7 +754,7 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 static int vvp_io_write_start(const struct lu_env *env,
 			      const struct cl_io_slice *ios)
 {
-	struct vvp_io      *cio   = cl2vvp_io(env, ios);
+	struct vvp_io      *vio   = cl2vvp_io(env, ios);
 	struct cl_io       *io    = ios->cis_io;
 	struct cl_object   *obj   = io->ci_obj;
 	struct inode       *inode = vvp_object_inode(obj);
@@ -771,22 +772,22 @@ static int vvp_io_write_start(const struct lu_env *env,
 		 */
 		ll_merge_attr(env, inode);
 		pos = io->u.ci_wr.wr.crw_pos = i_size_read(inode);
-		cio->cui_iocb->ki_pos = pos;
+		vio->vui_iocb->ki_pos = pos;
 	} else {
-		LASSERT(cio->cui_iocb->ki_pos == pos);
+		LASSERT(vio->vui_iocb->ki_pos == pos);
 	}
 
 	CDEBUG(D_VFSTRACE, "write: [%lli, %lli)\n", pos, pos + (long long)cnt);
 
-	if (!cio->cui_iter) /* from a temp io in ll_cl_init(). */
+	if (!vio->vui_iter) /* from a temp io in ll_cl_init(). */
 		result = 0;
 	else
-		result = generic_file_write_iter(cio->cui_iocb, cio->cui_iter);
+		result = generic_file_write_iter(vio->vui_iocb, vio->vui_iter);
 
 	if (result > 0) {
 		result = vvp_io_write_commit(env, io);
-		if (cio->u.write.cui_written > 0) {
-			result = cio->u.write.cui_written;
+		if (vio->u.write.vui_written > 0) {
+			result = vio->u.write.vui_written;
 			io->ci_nob += result;
 
 			CDEBUG(D_VFSTRACE, "write: nob %zd, result: %zd\n",
@@ -803,7 +804,7 @@ static int vvp_io_write_start(const struct lu_env *env,
 		if (result < cnt)
 			io->ci_continue = 0;
 		ll_rw_stats_tally(ll_i2sbi(inode), current->pid,
-				  cio->cui_fd, pos, result, WRITE);
+				  vio->vui_fd, pos, result, WRITE);
 		result = 0;
 	}
 	return result;
@@ -1047,7 +1048,7 @@ static int vvp_io_read_page(const struct lu_env *env,
 	struct cl_page	    *page   = slice->cpl_page;
 	struct inode              *inode  = vvp_object_inode(slice->cpl_obj);
 	struct ll_sb_info	 *sbi    = ll_i2sbi(inode);
-	struct ll_file_data       *fd     = cl2vvp_io(env, ios)->cui_fd;
+	struct ll_file_data       *fd     = cl2vvp_io(env, ios)->vui_fd;
 	struct ll_readahead_state *ras    = &fd->fd_ras;
 	struct cl_2queue	  *queue  = &io->ci_queue;
 
@@ -1128,11 +1129,11 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 	       " ignore/verify layout %d/%d, layout version %d restore needed %d\n",
 	       PFID(lu_object_fid(&obj->co_lu)),
 	       io->ci_ignore_layout, io->ci_verify_layout,
-	       vio->cui_layout_gen, io->ci_restore_needed);
+	       vio->vui_layout_gen, io->ci_restore_needed);
 
-	CL_IO_SLICE_CLEAN(vio, cui_cl);
-	cl_io_slice_add(io, &vio->cui_cl, obj, &vvp_io_ops);
-	vio->cui_ra_valid = false;
+	CL_IO_SLICE_CLEAN(vio, vui_cl);
+	cl_io_slice_add(io, &vio->vui_cl, obj, &vvp_io_ops);
+	vio->vui_ra_valid = false;
 	result = 0;
 	if (io->ci_type == CIT_READ || io->ci_type == CIT_WRITE) {
 		size_t count;
@@ -1145,7 +1146,7 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 		if (count == 0)
 			result = 1;
 		else
-			vio->cui_tot_count = count;
+			vio->vui_tot_count = count;
 
 		/* for read/write, we store the jobid in the inode, and
 		 * it'll be fetched by osc when building RPC.
@@ -1171,7 +1172,7 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 	 * because it might not grant layout lock in IT_OPEN.
 	 */
 	if (result == 0 && !io->ci_ignore_layout) {
-		result = ll_layout_refresh(inode, &vio->cui_layout_gen);
+		result = ll_layout_refresh(inode, &vio->vui_layout_gen);
 		if (result == -ENOENT)
 			/* If the inode on MDS has been removed, but the objects
 			 * on OSTs haven't been destroyed (async unlink), layout
diff --git a/drivers/staging/lustre/lustre/llite/vvp_page.c b/drivers/staging/lustre/lustre/llite/vvp_page.c
index 4f7dfe2..69316c1 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_page.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_page.c
@@ -372,9 +372,9 @@ static int vvp_page_is_under_lock(const struct lu_env *env,
 {
 	if (io->ci_type == CIT_READ || io->ci_type == CIT_WRITE ||
 	    io->ci_type == CIT_FAULT) {
-		struct vvp_io *cio = vvp_env_io(env);
+		struct vvp_io *vio = vvp_env_io(env);
 
-		if (unlikely(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED))
+		if (unlikely(vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED))
 			*max_index = CL_PAGE_EOF;
 	}
 	return 0;
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367431 — [PATCH 15/43] staging/lustre/obd: remove struct client_obd_lock

From: "John L. Hammond" <john.hammond@intel.com>

Remove the definition of struct client_obd_lock and the functions
client_obd_list_{init,lock,unlock,done}(). Use spinlock_t for the
cl_{loi,lru}_list_lock members of struct client_obd and call
spin_{lock,unlock}() directly.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/fld/fld_request.c    | 14 ++---
 drivers/staging/lustre/lustre/include/linux/obd.h  | 67 ----------------------
 drivers/staging/lustre/lustre/include/obd.h        |  9 +--
 drivers/staging/lustre/lustre/ldlm/ldlm_lib.c      |  4 +-
 drivers/staging/lustre/lustre/mdc/lproc_mdc.c      |  8 +--
 drivers/staging/lustre/lustre/mdc/mdc_lib.c        | 18 +++---
 drivers/staging/lustre/lustre/osc/lproc_osc.c      | 38 ++++++------
 drivers/staging/lustre/lustre/osc/osc_cache.c      | 50 ++++++++--------
 .../staging/lustre/lustre/osc/osc_cl_internal.h    |  2 +-
 drivers/staging/lustre/lustre/osc/osc_page.c       | 24 ++++----
 drivers/staging/lustre/lustre/osc/osc_request.c    | 46 +++++++--------
 11 files changed, 105 insertions(+), 175 deletions(-)

diff --git a/drivers/staging/lustre/lustre/fld/fld_request.c b/drivers/staging/lustre/lustre/fld/fld_request.c
index a3d122d..2dfdb51 100644
--- a/drivers/staging/lustre/lustre/fld/fld_request.c
+++ b/drivers/staging/lustre/lustre/fld/fld_request.c
@@ -64,9 +64,9 @@ static int fld_req_avail(struct client_obd *cli, struct mdc_cache_waiter *mcw)
 {
 	int rc;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	rc = list_empty(&mcw->mcw_entry);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	return rc;
 };
 
@@ -75,15 +75,15 @@ static void fld_enter_request(struct client_obd *cli)
 	struct mdc_cache_waiter mcw;
 	struct l_wait_info lwi = { 0 };
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
 		list_add_tail(&mcw.mcw_entry, &cli->cl_cache_waiters);
 		init_waitqueue_head(&mcw.mcw_waitq);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		l_wait_event(mcw.mcw_waitq, fld_req_avail(cli, &mcw), &lwi);
 	} else {
 		cli->cl_r_in_flight++;
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 	}
 }
 
@@ -92,7 +92,7 @@ static void fld_exit_request(struct client_obd *cli)
 	struct list_head *l, *tmp;
 	struct mdc_cache_waiter *mcw;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_r_in_flight--;
 	list_for_each_safe(l, tmp, &cli->cl_cache_waiters) {
 
@@ -106,7 +106,7 @@ static void fld_exit_request(struct client_obd *cli)
 		cli->cl_r_in_flight++;
 		wake_up(&mcw->mcw_waitq);
 	}
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 }
 
 static int fld_rrb_hash(struct lu_client_fld *fld, u64 seq)
diff --git a/drivers/staging/lustre/lustre/include/linux/obd.h b/drivers/staging/lustre/lustre/include/linux/obd.h
index 3907bf4..e1063e8 100644
--- a/drivers/staging/lustre/lustre/include/linux/obd.h
+++ b/drivers/staging/lustre/lustre/include/linux/obd.h
@@ -55,71 +55,4 @@ struct ll_iattr {
 	unsigned int	ia_attr_flags;
 };
 
-#define CLIENT_OBD_LIST_LOCK_DEBUG 1
-
-struct client_obd_lock {
-	spinlock_t		lock;
-
-	unsigned long       time;
-	struct task_struct *task;
-	const char	 *func;
-	int		 line;
-};
-
-static inline void __client_obd_list_lock(struct client_obd_lock *lock,
-					  const char *func, int line)
-{
-	unsigned long cur = jiffies;
-
-	while (1) {
-		if (spin_trylock(&lock->lock)) {
-			LASSERT(!lock->task);
-			lock->task = current;
-			lock->func = func;
-			lock->line = line;
-			lock->time = jiffies;
-			break;
-		}
-
-		if (time_before(cur + 5 * HZ, jiffies) &&
-		    time_before(lock->time + 5 * HZ, jiffies)) {
-			struct task_struct *task = lock->task;
-
-			if (!task)
-				continue;
-
-			LCONSOLE_WARN("%s:%d: lock %p was acquired by <%s:%d:%s:%d> for %lu seconds.\n",
-				      current->comm, current->pid,
-				      lock, task->comm, task->pid,
-				      lock->func, lock->line,
-				      (jiffies - lock->time) / HZ);
-			LCONSOLE_WARN("====== for current process =====\n");
-			dump_stack();
-			LCONSOLE_WARN("====== end =======\n");
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(1000 * HZ);
-		}
-		cpu_relax();
-	}
-}
-
-#define client_obd_list_lock(lock) \
-	__client_obd_list_lock(lock, __func__, __LINE__)
-
-static inline void client_obd_list_unlock(struct client_obd_lock *lock)
-{
-	LASSERT(lock->task);
-	lock->task = NULL;
-	lock->time = jiffies;
-	spin_unlock(&lock->lock);
-}
-
-static inline void client_obd_list_lock_init(struct client_obd_lock *lock)
-{
-	spin_lock_init(&lock->lock);
-}
-
-static inline void client_obd_list_lock_done(struct client_obd_lock *lock)
-{}
-
 #endif /* __LINUX_OBD_H */
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index 15c514c..84cc001 100644
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -37,6 +37,7 @@
 #ifndef __OBD_H
 #define __OBD_H
 
+#include <linux/spinlock.h>
 #include "linux/obd.h"
 
 #define IOC_OSC_TYPE	 'h'
@@ -293,14 +294,10 @@ struct client_obd {
 	 * blocking everywhere, but we don't want to slow down fast-path of
 	 * our main platform.)
 	 *
-	 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
-	 * with client_obd_list_{un,}lock() and
-	 * client_obd_list_lock_{init,done}() functions.
-	 *
 	 * NB by Jinshan: though field names are still _loi_, but actually
 	 * osc_object{}s are in the list.
 	 */
-	struct client_obd_lock	       cl_loi_list_lock;
+	spinlock_t		       cl_loi_list_lock;
 	struct list_head	       cl_loi_ready_list;
 	struct list_head	       cl_loi_hp_ready_list;
 	struct list_head	       cl_loi_write_list;
@@ -327,7 +324,7 @@ struct client_obd {
 	atomic_t		 cl_lru_shrinkers;
 	atomic_t		 cl_lru_in_list;
 	struct list_head	 cl_lru_list; /* lru page list */
-	struct client_obd_lock   cl_lru_list_lock; /* page list protector */
+	spinlock_t		 cl_lru_list_lock; /* page list protector */
 
 	/* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
 	atomic_t	     cl_destroy_in_flight;
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
index b586d5a..b497ce4 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
@@ -314,7 +314,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
 	INIT_LIST_HEAD(&cli->cl_loi_hp_ready_list);
 	INIT_LIST_HEAD(&cli->cl_loi_write_list);
 	INIT_LIST_HEAD(&cli->cl_loi_read_list);
-	client_obd_list_lock_init(&cli->cl_loi_list_lock);
+	spin_lock_init(&cli->cl_loi_list_lock);
 	atomic_set(&cli->cl_pending_w_pages, 0);
 	atomic_set(&cli->cl_pending_r_pages, 0);
 	cli->cl_r_in_flight = 0;
@@ -333,7 +333,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
 	atomic_set(&cli->cl_lru_busy, 0);
 	atomic_set(&cli->cl_lru_in_list, 0);
 	INIT_LIST_HEAD(&cli->cl_lru_list);
-	client_obd_list_lock_init(&cli->cl_lru_list_lock);
+	spin_lock_init(&cli->cl_lru_list_lock);
 
 	init_waitqueue_head(&cli->cl_destroy_waitq);
 	atomic_set(&cli->cl_destroy_in_flight, 0);
diff --git a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
index 38f267a..5c7a15d 100644
--- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
+++ b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
@@ -49,9 +49,9 @@ static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
 					      obd_kobj);
 	struct client_obd *cli = &dev->u.cli;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return len;
 }
@@ -74,9 +74,9 @@ static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
 	if (val < 1 || val > MDC_MAX_RIF_MAX)
 		return -ERANGE;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_max_rpcs_in_flight = val;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return count;
 }
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_lib.c b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
index b3bfdcb..bd29eb7 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_lib.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
@@ -481,9 +481,9 @@ static int mdc_req_avail(struct client_obd *cli, struct mdc_cache_waiter *mcw)
 {
 	int rc;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	rc = list_empty(&mcw->mcw_entry);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	return rc;
 };
 
@@ -497,23 +497,23 @@ int mdc_enter_request(struct client_obd *cli)
 	struct mdc_cache_waiter mcw;
 	struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
 		list_add_tail(&mcw.mcw_entry, &cli->cl_cache_waiters);
 		init_waitqueue_head(&mcw.mcw_waitq);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		rc = l_wait_event(mcw.mcw_waitq, mdc_req_avail(cli, &mcw),
 				  &lwi);
 		if (rc) {
-			client_obd_list_lock(&cli->cl_loi_list_lock);
+			spin_lock(&cli->cl_loi_list_lock);
 			if (list_empty(&mcw.mcw_entry))
 				cli->cl_r_in_flight--;
 			list_del_init(&mcw.mcw_entry);
-			client_obd_list_unlock(&cli->cl_loi_list_lock);
+			spin_unlock(&cli->cl_loi_list_lock);
 		}
 	} else {
 		cli->cl_r_in_flight++;
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 	}
 	return rc;
 }
@@ -523,7 +523,7 @@ void mdc_exit_request(struct client_obd *cli)
 	struct list_head *l, *tmp;
 	struct mdc_cache_waiter *mcw;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_r_in_flight--;
 	list_for_each_safe(l, tmp, &cli->cl_cache_waiters) {
 		if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
@@ -538,5 +538,5 @@ void mdc_exit_request(struct client_obd *cli)
 	}
 	/* Empty waiting list? Decrease reqs in-flight number */
 
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 }
diff --git a/drivers/staging/lustre/lustre/osc/lproc_osc.c b/drivers/staging/lustre/lustre/osc/lproc_osc.c
index e6e2029..911e505 100644
--- a/drivers/staging/lustre/lustre/osc/lproc_osc.c
+++ b/drivers/staging/lustre/lustre/osc/lproc_osc.c
@@ -121,9 +121,9 @@ static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
 		atomic_add(added, &osc_pool_req_count);
 	}
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_max_rpcs_in_flight = val;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return count;
 }
@@ -139,9 +139,9 @@ static ssize_t max_dirty_mb_show(struct kobject *kobj,
 	long val;
 	int mult;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	val = cli->cl_dirty_max;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	mult = 1 << 20;
 	return lprocfs_read_frac_helper(buf, PAGE_SIZE, val, mult);
@@ -169,10 +169,10 @@ static ssize_t max_dirty_mb_store(struct kobject *kobj,
 	    pages_number > totalram_pages / 4) /* 1/4 of RAM */
 		return -ERANGE;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_dirty_max = (u32)(pages_number << PAGE_CACHE_SHIFT);
 	osc_wake_cache_waiters(cli);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return count;
 }
@@ -247,9 +247,9 @@ static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 	struct client_obd *cli = &dev->u.cli;
 	int len;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	len = sprintf(buf, "%lu\n", cli->cl_dirty);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return len;
 }
@@ -264,9 +264,9 @@ static ssize_t cur_grant_bytes_show(struct kobject *kobj,
 	struct client_obd *cli = &dev->u.cli;
 	int len;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	len = sprintf(buf, "%lu\n", cli->cl_avail_grant);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return len;
 }
@@ -287,12 +287,12 @@ static ssize_t cur_grant_bytes_store(struct kobject *kobj,
 		return rc;
 
 	/* this is only for shrinking grant */
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	if (val >= cli->cl_avail_grant) {
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		return -EINVAL;
 	}
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 		rc = osc_shrink_grant_to_target(cli, val);
@@ -311,9 +311,9 @@ static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 	struct client_obd *cli = &dev->u.cli;
 	int len;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return len;
 }
@@ -585,9 +585,9 @@ static ssize_t max_pages_per_rpc_store(struct kobject *kobj,
 	if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 		return -ERANGE;
 	}
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_max_pages_per_rpc = val;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return count;
 }
@@ -631,7 +631,7 @@ static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 
 	ktime_get_real_ts64(&now);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 
 	seq_printf(seq, "snapshot_time:	 %llu.%9lu (secs.usecs)\n",
 		   (s64)now.tv_sec, (unsigned long)now.tv_nsec);
@@ -715,7 +715,7 @@ static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 			break;
 	}
 
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return 0;
 }
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 74607933..c510659 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -1373,7 +1373,7 @@ static int osc_completion(const struct lu_env *env, struct osc_async_page *oap,
 static void osc_consume_write_grant(struct client_obd *cli,
 				    struct brw_page *pga)
 {
-	assert_spin_locked(&cli->cl_loi_list_lock.lock);
+	assert_spin_locked(&cli->cl_loi_list_lock);
 	LASSERT(!(pga->flag & OBD_BRW_FROM_GRANT));
 	atomic_inc(&obd_dirty_pages);
 	cli->cl_dirty += PAGE_CACHE_SIZE;
@@ -1389,7 +1389,7 @@ static void osc_consume_write_grant(struct client_obd *cli,
 static void osc_release_write_grant(struct client_obd *cli,
 				    struct brw_page *pga)
 {
-	assert_spin_locked(&cli->cl_loi_list_lock.lock);
+	assert_spin_locked(&cli->cl_loi_list_lock);
 	if (!(pga->flag & OBD_BRW_FROM_GRANT)) {
 		return;
 	}
@@ -1408,7 +1408,7 @@ static void osc_release_write_grant(struct client_obd *cli,
  * To avoid sleeping with object lock held, it's good for us allocate enough
  * grants before entering into critical section.
  *
- * client_obd_list_lock held by caller
+ * spin_lock held by caller
  */
 static int osc_reserve_grant(struct client_obd *cli, unsigned int bytes)
 {
@@ -1442,11 +1442,11 @@ static void __osc_unreserve_grant(struct client_obd *cli,
 static void osc_unreserve_grant(struct client_obd *cli,
 				unsigned int reserved, unsigned int unused)
 {
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	__osc_unreserve_grant(cli, reserved, unused);
 	if (unused > 0)
 		osc_wake_cache_waiters(cli);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 }
 
 /**
@@ -1467,7 +1467,7 @@ static void osc_free_grant(struct client_obd *cli, unsigned int nr_pages,
 {
 	int grant = (1 << cli->cl_chunkbits) + cli->cl_extent_tax;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	atomic_sub(nr_pages, &obd_dirty_pages);
 	cli->cl_dirty -= nr_pages << PAGE_CACHE_SHIFT;
 	cli->cl_lost_grant += lost_grant;
@@ -1479,7 +1479,7 @@ static void osc_free_grant(struct client_obd *cli, unsigned int nr_pages,
 		cli->cl_avail_grant += grant;
 	}
 	osc_wake_cache_waiters(cli);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	CDEBUG(D_CACHE, "lost %u grant: %lu avail: %lu dirty: %lu\n",
 	       lost_grant, cli->cl_lost_grant,
 	       cli->cl_avail_grant, cli->cl_dirty);
@@ -1491,9 +1491,9 @@ static void osc_free_grant(struct client_obd *cli, unsigned int nr_pages,
  */
 static void osc_exit_cache(struct client_obd *cli, struct osc_async_page *oap)
 {
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	osc_release_write_grant(cli, &oap->oap_brw_page);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 }
 
 /**
@@ -1532,9 +1532,9 @@ static int ocw_granted(struct client_obd *cli, struct osc_cache_waiter *ocw)
 {
 	int rc;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	rc = list_empty(&ocw->ocw_entry);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	return rc;
 }
 
@@ -1556,7 +1556,7 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
 
 	OSC_DUMP_GRANT(cli, "need:%d.\n", bytes);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 
 	/* force the caller to try sync io.  this can jump the list
 	 * of queued writes and create a discontiguous rpc stream
@@ -1587,7 +1587,7 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
 	while (cli->cl_dirty > 0 || cli->cl_w_in_flight > 0) {
 		list_add_tail(&ocw.ocw_entry, &cli->cl_cache_waiters);
 		ocw.ocw_rc = 0;
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 
 		osc_io_unplug_async(env, cli, NULL);
 
@@ -1596,7 +1596,7 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
 
 		rc = l_wait_event(ocw.ocw_waitq, ocw_granted(cli, &ocw), &lwi);
 
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 
 		/* l_wait_event is interrupted by signal */
 		if (rc < 0) {
@@ -1615,7 +1615,7 @@ static int osc_enter_cache(const struct lu_env *env, struct client_obd *cli,
 		}
 	}
 out:
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	OSC_DUMP_GRANT(cli, "returned %d.\n", rc);
 	return rc;
 }
@@ -1776,9 +1776,9 @@ static int osc_list_maint(struct client_obd *cli, struct osc_object *osc)
 {
 	int is_ready;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	is_ready = __osc_list_maint(cli, osc);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return is_ready;
 }
@@ -1829,10 +1829,10 @@ static void osc_ap_completion(const struct lu_env *env, struct client_obd *cli,
 	oap->oap_interrupted = 0;
 
 	if (oap->oap_cmd & OBD_BRW_WRITE && xid > 0) {
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 		osc_process_ar(&cli->cl_ar, xid, rc);
 		osc_process_ar(&loi->loi_ar, xid, rc);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 	}
 
 	rc = osc_completion(env, oap, oap->oap_cmd, rc);
@@ -2133,7 +2133,7 @@ static void osc_check_rpcs(const struct lu_env *env, struct client_obd *cli)
 		}
 
 		cl_object_get(obj);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		lu_object_ref_add_at(&obj->co_lu, &link, "check", current);
 
 		/* attempt some read/write balancing by alternating between
@@ -2180,7 +2180,7 @@ static void osc_check_rpcs(const struct lu_env *env, struct client_obd *cli)
 		lu_object_ref_del_at(&obj->co_lu, &link, "check", current);
 		cl_object_put(env, obj);
 
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 	}
 }
 
@@ -2197,9 +2197,9 @@ static int osc_io_unplug0(const struct lu_env *env, struct client_obd *cli,
 		 * potential stack overrun problem. LU-2859
 		 */
 		atomic_inc(&cli->cl_lru_shrinkers);
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 		osc_check_rpcs(env, cli);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		atomic_dec(&cli->cl_lru_shrinkers);
 	} else {
 		CDEBUG(D_CACHE, "Queue writeback work for client %p.\n", cli);
@@ -2332,9 +2332,9 @@ int osc_queue_async_io(const struct lu_env *env, struct cl_io *io,
 			grants = 0;
 
 		/* it doesn't need any grant to dirty this page */
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 		rc = osc_enter_cache_try(cli, oap, grants, 0);
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		if (rc == 0) { /* try failed */
 			grants = 0;
 			need_release = 1;
diff --git a/drivers/staging/lustre/lustre/osc/osc_cl_internal.h b/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
index 89552d7..bb34b53a 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
+++ b/drivers/staging/lustre/lustre/osc/osc_cl_internal.h
@@ -608,7 +608,7 @@ enum osc_extent_state {
  *
  * LOCKING ORDER
  * =============
- * page lock -> client_obd_list_lock -> object lock(osc_object::oo_lock)
+ * page lock -> cl_loi_list_lock -> object lock(osc_object::oo_lock)
  */
 struct osc_extent {
 	/** red-black tree node */
diff --git a/drivers/staging/lustre/lustre/osc/osc_page.c b/drivers/staging/lustre/lustre/osc/osc_page.c
index e02dd33..5b31351 100644
--- a/drivers/staging/lustre/lustre/osc/osc_page.c
+++ b/drivers/staging/lustre/lustre/osc/osc_page.c
@@ -456,11 +456,11 @@ void osc_lru_add_batch(struct client_obd *cli, struct list_head *plist)
 	}
 
 	if (npages > 0) {
-		client_obd_list_lock(&cli->cl_lru_list_lock);
+		spin_lock(&cli->cl_lru_list_lock);
 		list_splice_tail(&lru, &cli->cl_lru_list);
 		atomic_sub(npages, &cli->cl_lru_busy);
 		atomic_add(npages, &cli->cl_lru_in_list);
-		client_obd_list_unlock(&cli->cl_lru_list_lock);
+		spin_unlock(&cli->cl_lru_list_lock);
 
 		/* XXX: May set force to be true for better performance */
 		if (osc_cache_too_much(cli))
@@ -482,14 +482,14 @@ static void __osc_lru_del(struct client_obd *cli, struct osc_page *opg)
 static void osc_lru_del(struct client_obd *cli, struct osc_page *opg)
 {
 	if (opg->ops_in_lru) {
-		client_obd_list_lock(&cli->cl_lru_list_lock);
+		spin_lock(&cli->cl_lru_list_lock);
 		if (!list_empty(&opg->ops_lru)) {
 			__osc_lru_del(cli, opg);
 		} else {
 			LASSERT(atomic_read(&cli->cl_lru_busy) > 0);
 			atomic_dec(&cli->cl_lru_busy);
 		}
-		client_obd_list_unlock(&cli->cl_lru_list_lock);
+		spin_unlock(&cli->cl_lru_list_lock);
 
 		atomic_inc(cli->cl_lru_left);
 		/* this is a great place to release more LRU pages if
@@ -513,9 +513,9 @@ static void osc_lru_use(struct client_obd *cli, struct osc_page *opg)
 	 * ops_lru should be empty
 	 */
 	if (opg->ops_in_lru && !list_empty(&opg->ops_lru)) {
-		client_obd_list_lock(&cli->cl_lru_list_lock);
+		spin_lock(&cli->cl_lru_list_lock);
 		__osc_lru_del(cli, opg);
-		client_obd_list_unlock(&cli->cl_lru_list_lock);
+		spin_unlock(&cli->cl_lru_list_lock);
 		atomic_inc(&cli->cl_lru_busy);
 	}
 }
@@ -572,7 +572,7 @@ int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
 	pvec = (struct cl_page **)osc_env_info(env)->oti_pvec;
 	io = &osc_env_info(env)->oti_io;
 
-	client_obd_list_lock(&cli->cl_lru_list_lock);
+	spin_lock(&cli->cl_lru_list_lock);
 	maxscan = min(target << 1, atomic_read(&cli->cl_lru_in_list));
 	list_for_each_entry_safe(opg, temp, &cli->cl_lru_list, ops_lru) {
 		struct cl_page *page;
@@ -592,7 +592,7 @@ int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
 			struct cl_object *tmp = page->cp_obj;
 
 			cl_object_get(tmp);
-			client_obd_list_unlock(&cli->cl_lru_list_lock);
+			spin_unlock(&cli->cl_lru_list_lock);
 
 			if (clobj) {
 				discard_pagevec(env, io, pvec, index);
@@ -608,7 +608,7 @@ int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
 			io->ci_ignore_layout = 1;
 			rc = cl_io_init(env, io, CIT_MISC, clobj);
 
-			client_obd_list_lock(&cli->cl_lru_list_lock);
+			spin_lock(&cli->cl_lru_list_lock);
 
 			if (rc != 0)
 				break;
@@ -640,17 +640,17 @@ int osc_lru_shrink(const struct lu_env *env, struct client_obd *cli,
 		/* Don't discard and free the page with cl_lru_list held */
 		pvec[index++] = page;
 		if (unlikely(index == OTI_PVEC_SIZE)) {
-			client_obd_list_unlock(&cli->cl_lru_list_lock);
+			spin_unlock(&cli->cl_lru_list_lock);
 			discard_pagevec(env, io, pvec, index);
 			index = 0;
 
-			client_obd_list_lock(&cli->cl_lru_list_lock);
+			spin_lock(&cli->cl_lru_list_lock);
 		}
 
 		if (++count >= target)
 			break;
 	}
-	client_obd_list_unlock(&cli->cl_lru_list_lock);
+	spin_unlock(&cli->cl_lru_list_lock);
 
 	if (clobj) {
 		discard_pagevec(env, io, pvec, index);
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index 1e378e6..372bd26 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -801,7 +801,7 @@ static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
 	LASSERT(!(oa->o_valid & bits));
 
 	oa->o_valid |= bits;
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	oa->o_dirty = cli->cl_dirty;
 	if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
 		     cli->cl_dirty_max)) {
@@ -833,7 +833,7 @@ static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
 	oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
 	oa->o_dropped = cli->cl_lost_grant;
 	cli->cl_lost_grant = 0;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	CDEBUG(D_CACHE, "dirty: %llu undirty: %u dropped %u grant: %llu\n",
 	       oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
 
@@ -849,9 +849,9 @@ void osc_update_next_shrink(struct client_obd *cli)
 
 static void __osc_update_grant(struct client_obd *cli, u64 grant)
 {
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	cli->cl_avail_grant += grant;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 }
 
 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
@@ -889,10 +889,10 @@ out:
 
 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
 {
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	oa->o_grant = cli->cl_avail_grant / 4;
 	cli->cl_avail_grant -= oa->o_grant;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
 		oa->o_valid |= OBD_MD_FLFLAGS;
 		oa->o_flags = 0;
@@ -911,10 +911,10 @@ static int osc_shrink_grant(struct client_obd *cli)
 	__u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
 			     (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	if (cli->cl_avail_grant <= target_bytes)
 		target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	return osc_shrink_grant_to_target(cli, target_bytes);
 }
@@ -924,7 +924,7 @@ int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
 	int rc = 0;
 	struct ost_body	*body;
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	/* Don't shrink if we are already above or below the desired limit
 	 * We don't want to shrink below a single RPC, as that will negatively
 	 * impact block allocation and long-term performance.
@@ -933,10 +933,10 @@ int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
 		target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
 
 	if (target_bytes >= cli->cl_avail_grant) {
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		return 0;
 	}
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	body = kzalloc(sizeof(*body), GFP_NOFS);
 	if (!body)
@@ -944,10 +944,10 @@ int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
 
 	osc_announce_cached(cli, &body->oa, 0);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	body->oa.o_grant = cli->cl_avail_grant - target_bytes;
 	cli->cl_avail_grant = target_bytes;
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 	if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
 		body->oa.o_valid |= OBD_MD_FLFLAGS;
 		body->oa.o_flags = 0;
@@ -1035,7 +1035,7 @@ static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
 	 * race is tolerable here: if we're evicted, but imp_state already
 	 * left EVICTED state, then cl_dirty must be 0 already.
 	 */
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
 		cli->cl_avail_grant = ocd->ocd_grant;
 	else
@@ -1053,7 +1053,7 @@ static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
 
 	/* determine the appropriate chunk size used by osc_extent. */
 	cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld chunk bits: %d\n",
 	       cli->cl_import->imp_obd->obd_name,
@@ -1827,7 +1827,7 @@ static int brw_interpret(const struct lu_env *env,
 	osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
 	ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	/* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
 	 * is called so we know whether to go to sync BRWs or wait for more
 	 * RPCs to complete
@@ -1837,7 +1837,7 @@ static int brw_interpret(const struct lu_env *env,
 	else
 		cli->cl_r_in_flight--;
 	osc_wake_cache_waiters(cli);
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	osc_io_unplug(env, cli, NULL);
 	return rc;
@@ -2005,7 +2005,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 	if (tmp)
 		tmp->oap_request = ptlrpc_request_addref(req);
 
-	client_obd_list_lock(&cli->cl_loi_list_lock);
+	spin_lock(&cli->cl_loi_list_lock);
 	starting_offset >>= PAGE_CACHE_SHIFT;
 	if (cmd == OBD_BRW_READ) {
 		cli->cl_r_in_flight++;
@@ -2020,7 +2020,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 		lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
 				      starting_offset + 1);
 	}
-	client_obd_list_unlock(&cli->cl_loi_list_lock);
+	spin_unlock(&cli->cl_loi_list_lock);
 
 	DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
 		  page_count, aa, cli->cl_r_in_flight,
@@ -3005,12 +3005,12 @@ static int osc_reconnect(const struct lu_env *env,
 	if (data && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
 		long lost_grant;
 
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 		data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
 				2 * cli_brw_size(obd);
 		lost_grant = cli->cl_lost_grant;
 		cli->cl_lost_grant = 0;
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 
 		CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d, lost: %ld.\n",
 		       data->ocd_connect_flags,
@@ -3060,10 +3060,10 @@ static int osc_import_event(struct obd_device *obd,
 	switch (event) {
 	case IMP_EVENT_DISCON: {
 		cli = &obd->u.cli;
-		client_obd_list_lock(&cli->cl_loi_list_lock);
+		spin_lock(&cli->cl_loi_list_lock);
 		cli->cl_avail_grant = 0;
 		cli->cl_lost_grant = 0;
-		client_obd_list_unlock(&cli->cl_loi_list_lock);
+		spin_unlock(&cli->cl_loi_list_lock);
 		break;
 	}
 	case IMP_EVENT_INACTIVE: {
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367432 — [PATCH 30/43] staging/lustre/llite: merge ccc_io and vvp_io

From: "John L. Hammond" <john.hammond@intel.com>

Move the contents of struct vvp_io into struct ccc_io, delete the
former, and rename the latter to struct vvp_io. Rename various ccc_io
related functions to use vvp rather than ccc.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13351
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |   2 +-
 drivers/staging/lustre/lustre/llite/file.c         |  13 ++-
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   |  60 +++---------
 .../staging/lustre/lustre/llite/llite_internal.h   |  72 ---------------
 drivers/staging/lustre/lustre/llite/llite_mmap.c   |  12 +--
 drivers/staging/lustre/lustre/llite/rw.c           |   4 +-
 drivers/staging/lustre/lustre/llite/rw26.c         |  10 +-
 drivers/staging/lustre/lustre/llite/vvp_dev.c      |   2 +-
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  81 +++++++++++++----
 drivers/staging/lustre/lustre/llite/vvp_io.c       | 101 ++++++++++-----------
 drivers/staging/lustre/lustre/llite/vvp_page.c     |   2 +-
 11 files changed, 144 insertions(+), 215 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index d509f94..104dc9f 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -1461,7 +1461,7 @@ enum cl_io_state {
  * This is usually embedded into layer session data, rather than allocated
  * dynamically.
  *
- * \see vvp_io, lov_io, osc_io, ccc_io
+ * \see vvp_io, lov_io, osc_io
  */
 struct cl_io_slice {
 	struct cl_io		  *cis_io;
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index bf2a5ee..27e7e65 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -1135,14 +1135,13 @@ restart:
 	ll_io_init(io, file, iot == CIT_WRITE);
 
 	if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
-		struct vvp_io *vio = vvp_env_io(env);
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 		int write_mutex_locked = 0;
 
 		cio->cui_fd  = LUSTRE_FPRIVATE(file);
-		vio->cui_io_subtype = args->via_io_subtype;
+		cio->cui_io_subtype = args->via_io_subtype;
 
-		switch (vio->cui_io_subtype) {
+		switch (cio->cui_io_subtype) {
 		case IO_NORMAL:
 			cio->cui_iter = args->u.normal.via_iter;
 			cio->cui_iocb = args->u.normal.via_iocb;
@@ -1158,11 +1157,11 @@ restart:
 			down_read(&lli->lli_trunc_sem);
 			break;
 		case IO_SPLICE:
-			vio->u.splice.cui_pipe = args->u.splice.via_pipe;
-			vio->u.splice.cui_flags = args->u.splice.via_flags;
+			cio->u.splice.cui_pipe = args->u.splice.via_pipe;
+			cio->u.splice.cui_flags = args->u.splice.via_flags;
 			break;
 		default:
-			CERROR("Unknown IO type - %u\n", vio->cui_io_subtype);
+			CERROR("Unknown IO type - %u\n", cio->cui_io_subtype);
 			LBUG();
 		}
 		result = cl_io_loop(env, io);
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 8884317..9a9d706 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -68,7 +68,6 @@ static const struct cl_req_operations ccc_req_ops;
  */
 
 static struct kmem_cache *ccc_thread_kmem;
-static struct kmem_cache *ccc_session_kmem;
 static struct kmem_cache *ccc_req_kmem;
 
 static struct lu_kmem_descr ccc_caches[] = {
@@ -78,11 +77,6 @@ static struct lu_kmem_descr ccc_caches[] = {
 		.ckd_size  = sizeof(struct ccc_thread_info),
 	},
 	{
-		.ckd_cache = &ccc_session_kmem,
-		.ckd_name  = "ccc_session_kmem",
-		.ckd_size  = sizeof(struct ccc_session)
-	},
-	{
 		.ckd_cache = &ccc_req_kmem,
 		.ckd_name  = "ccc_req_kmem",
 		.ckd_size  = sizeof(struct ccc_req)
@@ -116,37 +110,12 @@ void ccc_key_fini(const struct lu_context *ctx,
 	kmem_cache_free(ccc_thread_kmem, info);
 }
 
-void *ccc_session_key_init(const struct lu_context *ctx,
-			   struct lu_context_key *key)
-{
-	struct ccc_session *session;
-
-	session = kmem_cache_zalloc(ccc_session_kmem, GFP_NOFS);
-	if (!session)
-		session = ERR_PTR(-ENOMEM);
-	return session;
-}
-
-void ccc_session_key_fini(const struct lu_context *ctx,
-			  struct lu_context_key *key, void *data)
-{
-	struct ccc_session *session = data;
-
-	kmem_cache_free(ccc_session_kmem, session);
-}
-
 struct lu_context_key ccc_key = {
 	.lct_tags = LCT_CL_THREAD,
 	.lct_init = ccc_key_init,
 	.lct_fini = ccc_key_fini
 };
 
-struct lu_context_key ccc_session_key = {
-	.lct_tags = LCT_SESSION,
-	.lct_init = ccc_session_key_init,
-	.lct_fini = ccc_session_key_fini
-};
-
 int ccc_req_init(const struct lu_env *env, struct cl_device *dev,
 		 struct cl_req *req)
 {
@@ -237,11 +206,11 @@ static void vvp_object_size_unlock(struct cl_object *obj)
  *
  */
 
-int ccc_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
+int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 			  __u32 enqflags, enum cl_lock_mode mode,
 			  pgoff_t start, pgoff_t end)
 {
-	struct ccc_io	  *cio   = ccc_env_io(env);
+	struct vvp_io *cio = vvp_env_io(env);
 	struct cl_lock_descr   *descr = &cio->cui_link.cill_descr;
 	struct cl_object       *obj   = io->ci_obj;
 
@@ -266,8 +235,8 @@ int ccc_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 	return 0;
 }
 
-void ccc_io_update_iov(const struct lu_env *env,
-		       struct ccc_io *cio, struct cl_io *io)
+void vvp_io_update_iov(const struct lu_env *env,
+		       struct vvp_io *cio, struct cl_io *io)
 {
 	size_t size = io->u.ci_rw.crw_count;
 
@@ -277,27 +246,27 @@ void ccc_io_update_iov(const struct lu_env *env,
 	iov_iter_truncate(cio->cui_iter, size);
 }
 
-int ccc_io_one_lock(const struct lu_env *env, struct cl_io *io,
+int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
 		    __u32 enqflags, enum cl_lock_mode mode,
 		    loff_t start, loff_t end)
 {
 	struct cl_object *obj = io->ci_obj;
 
-	return ccc_io_one_lock_index(env, io, enqflags, mode,
+	return vvp_io_one_lock_index(env, io, enqflags, mode,
 				     cl_index(obj, start), cl_index(obj, end));
 }
 
-void ccc_io_end(const struct lu_env *env, const struct cl_io_slice *ios)
+void vvp_io_end(const struct lu_env *env, const struct cl_io_slice *ios)
 {
 	CLOBINVRNT(env, ios->cis_io->ci_obj,
 		   vvp_object_invariant(ios->cis_io->ci_obj));
 }
 
-void ccc_io_advance(const struct lu_env *env,
+void vvp_io_advance(const struct lu_env *env,
 		    const struct cl_io_slice *ios,
 		    size_t nob)
 {
-	struct ccc_io    *cio = cl2ccc_io(env, ios);
+	struct vvp_io    *cio = cl2vvp_io(env, ios);
 	struct cl_io     *io  = ios->cis_io;
 	struct cl_object *obj = ios->cis_io->ci_obj;
 
@@ -492,7 +461,7 @@ int cl_setattr_ost(struct inode *inode, const struct iattr *attr)
 
 again:
 	if (cl_io_init(env, io, CIT_SETATTR, io->ci_obj) == 0) {
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 
 		if (attr->ia_valid & ATTR_FILE)
 			/* populate the file descriptor for ftruncate to honor
@@ -524,13 +493,14 @@ again:
  *
  */
 
-struct ccc_io *cl2ccc_io(const struct lu_env *env,
+struct vvp_io *cl2vvp_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice)
 {
-	struct ccc_io *cio;
+	struct vvp_io *cio;
+
+	cio = container_of(slice, struct vvp_io, cui_cl);
+	LASSERT(cio == vvp_env_io(env));
 
-	cio = container_of(slice, struct ccc_io, cui_cl);
-	LASSERT(cio == ccc_env_io(env));
 	return cio;
 }
 
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 9dd4325..9856bb6 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -817,59 +817,6 @@ struct ll_close_queue {
 void vvp_write_pending(struct vvp_object *club, struct vvp_page *page);
 void vvp_write_complete(struct vvp_object *club, struct vvp_page *page);
 
-/* specific architecture can implement only part of this list */
-enum vvp_io_subtype {
-	/** normal IO */
-	IO_NORMAL,
-	/** io started from splice_{read|write} */
-	IO_SPLICE
-};
-
-/* IO subtypes */
-struct vvp_io {
-	/** io subtype */
-	enum vvp_io_subtype    cui_io_subtype;
-
-	union {
-		struct {
-			struct pipe_inode_info *cui_pipe;
-			unsigned int	    cui_flags;
-		} splice;
-		struct vvp_fault_io {
-			/**
-			 * Inode modification time that is checked across DLM
-			 * lock request.
-			 */
-			time64_t	    ft_mtime;
-			struct vm_area_struct *ft_vma;
-			/**
-			 *  locked page returned from vvp_io
-			 */
-			struct page	    *ft_vmpage;
-			struct vm_fault_api {
-				/**
-				 * kernel fault info
-				 */
-				struct vm_fault *ft_vmf;
-				/**
-				 * fault API used bitflags for return code.
-				 */
-				unsigned int    ft_flags;
-				/**
-				 * check that flags are from filemap_fault
-				 */
-				bool		ft_flags_valid;
-			} fault;
-		} fault;
-	} u;
-
-	/* Readahead state. */
-	pgoff_t	cui_ra_start;
-	pgoff_t cui_ra_count;
-	/* Set when cui_ra_{start,count} have been initialized. */
-	bool	cui_ra_valid;
-};
-
 /**
  * IO arguments for various VFS I/O interfaces.
  */
@@ -923,25 +870,6 @@ static inline struct vvp_io_args *vvp_env_args(const struct lu_env *env,
 	return ret;
 }
 
-struct vvp_session {
-	struct vvp_io	 vs_ios;
-};
-
-static inline struct vvp_session *vvp_env_session(const struct lu_env *env)
-{
-	extern struct lu_context_key vvp_session_key;
-	struct vvp_session *ses;
-
-	ses = lu_context_key_get(env->le_ses, &vvp_session_key);
-	LASSERT(ses);
-	return ses;
-}
-
-static inline struct vvp_io *vvp_env_io(const struct lu_env *env)
-{
-	return &vvp_env_session(env)->vs_ios;
-}
-
 int vvp_global_init(void);
 void vvp_global_fini(void);
 
diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c
index 1263da8..7c214f8 100644
--- a/drivers/staging/lustre/lustre/llite/llite_mmap.c
+++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c
@@ -146,7 +146,7 @@ ll_fault_io_init(struct vm_area_struct *vma, struct lu_env **env_ret,
 
 	rc = cl_io_init(env, io, CIT_FAULT, io->ci_obj);
 	if (rc == 0) {
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 		struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
 
 		LASSERT(cio->cui_cl.cis_io == io);
@@ -307,17 +307,17 @@ static int ll_fault0(struct vm_area_struct *vma, struct vm_fault *vmf)
 		vio = vvp_env_io(env);
 		vio->u.fault.ft_vma       = vma;
 		vio->u.fault.ft_vmpage    = NULL;
-		vio->u.fault.fault.ft_vmf = vmf;
-		vio->u.fault.fault.ft_flags = 0;
-		vio->u.fault.fault.ft_flags_valid = false;
+		vio->u.fault.ft_vmf = vmf;
+		vio->u.fault.ft_flags = 0;
+		vio->u.fault.ft_flags_valid = false;
 
 		result = cl_io_loop(env, io);
 
 		/* ft_flags are only valid if we reached
 		 * the call to filemap_fault
 		 */
-		if (vio->u.fault.fault.ft_flags_valid)
-			fault_ret = vio->u.fault.fault.ft_flags;
+		if (vio->u.fault.ft_flags_valid)
+			fault_ret = vio->u.fault.ft_flags;
 
 		vmpage = vio->u.fault.ft_vmpage;
 		if (result != 0 && vmpage) {
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c
index f06d8be..da44107 100644
--- a/drivers/staging/lustre/lustre/llite/rw.c
+++ b/drivers/staging/lustre/lustre/llite/rw.c
@@ -90,7 +90,7 @@ struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage)
 	struct lu_env    *env;
 	struct cl_io     *io;
 	struct cl_object *clob;
-	struct ccc_io    *cio;
+	struct vvp_io    *cio;
 
 	int refcheck;
 	int result = 0;
@@ -108,7 +108,7 @@ struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage)
 	lcc->lcc_refcheck = refcheck;
 	lcc->lcc_cookie = current;
 
-	cio = ccc_env_io(env);
+	cio = vvp_env_io(env);
 	io = cio->cui_cl.cis_io;
 	lcc->lcc_io = io;
 	if (!io) {
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
index bb85629..2f69634 100644
--- a/drivers/staging/lustre/lustre/llite/rw26.c
+++ b/drivers/staging/lustre/lustre/llite/rw26.c
@@ -376,7 +376,7 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 
 	env = cl_env_get(&refcheck);
 	LASSERT(!IS_ERR(env));
-	io = ccc_env_io(env)->cui_cl.cis_io;
+	io = vvp_env_io(env)->cui_cl.cis_io;
 	LASSERT(io);
 
 	/* 0. Need locking between buffered and direct access. and race with
@@ -439,7 +439,7 @@ out:
 		inode_unlock(inode);
 
 	if (tot_bytes > 0) {
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 
 		/* no commit async for direct IO */
 		cio->u.write.cui_written += tot_bytes;
@@ -513,7 +513,7 @@ static int ll_write_begin(struct file *file, struct address_space *mapping,
 	/* To avoid deadlock, try to lock page first. */
 	vmpage = grab_cache_page_nowait(mapping, index);
 	if (unlikely(!vmpage || PageDirty(vmpage) || PageWriteback(vmpage))) {
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 		struct cl_page_list *plist = &cio->u.write.cui_queue;
 
 		/* if the page is already in dirty cache, we have to commit
@@ -595,7 +595,7 @@ static int ll_write_end(struct file *file, struct address_space *mapping,
 	struct ll_cl_context *lcc = fsdata;
 	struct lu_env *env;
 	struct cl_io *io;
-	struct ccc_io *cio;
+	struct vvp_io *cio;
 	struct cl_page *page;
 	unsigned from = pos & (PAGE_CACHE_SIZE - 1);
 	bool unplug = false;
@@ -606,7 +606,7 @@ static int ll_write_end(struct file *file, struct address_space *mapping,
 	env  = lcc->lcc_env;
 	page = lcc->lcc_page;
 	io   = lcc->lcc_io;
-	cio  = ccc_env_io(env);
+	cio  = vvp_env_io(env);
 
 	LASSERT(cl_page_is_owned(page, io));
 	if (copied > 0) {
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c
index 4b77db3..030a246 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_dev.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c
@@ -138,7 +138,7 @@ struct lu_context_key vvp_session_key = {
 };
 
 /* type constructor/destructor: vvp_type_{init,fini,start,stop}(). */
-LU_TYPE_INIT_FINI(vvp, &ccc_key, &ccc_session_key, &vvp_key, &vvp_session_key);
+LU_TYPE_INIT_FINI(vvp, &ccc_key, &vvp_key, &vvp_session_key);
 
 static const struct lu_device_operations vvp_lu_ops = {
 	.ldo_object_alloc      = vvp_object_alloc
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index 403d2a7..443485c 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -81,10 +81,18 @@ enum ccc_setattr_lock_type {
 	SETATTR_MATCH_LOCK
 };
 
+/* specific architecture can implement only part of this list */
+enum vvp_io_subtype {
+	/** normal IO */
+	IO_NORMAL,
+	/** io started from splice_{read|write} */
+	IO_SPLICE
+};
+
 /**
- * IO state private to vvp or slp layers.
+ * IO state private to IO state private to VVP layer.
  */
-struct ccc_io {
+struct vvp_io {
 	/** super class */
 	struct cl_io_slice     cui_cl;
 	struct cl_io_lock_link cui_link;
@@ -98,16 +106,47 @@ struct ccc_io {
 	size_t cui_tot_count;
 
 	union {
+		struct vvp_fault_io {
+			/**
+			 * Inode modification time that is checked across DLM
+			 * lock request.
+			 */
+			time64_t	    ft_mtime;
+			struct vm_area_struct *ft_vma;
+			/**
+			 *  locked page returned from vvp_io
+			 */
+			struct page	    *ft_vmpage;
+			/**
+			 * kernel fault info
+			 */
+			struct vm_fault *ft_vmf;
+			/**
+			 * fault API used bitflags for return code.
+			 */
+			unsigned int    ft_flags;
+			/**
+			 * check that flags are from filemap_fault
+			 */
+			bool		ft_flags_valid;
+		} fault;
 		struct {
 			enum ccc_setattr_lock_type cui_local_lock;
 		} setattr;
 		struct {
+			struct pipe_inode_info	*cui_pipe;
+			unsigned int		 cui_flags;
+		} splice;
+		struct {
 			struct cl_page_list cui_queue;
 			unsigned long cui_written;
 			int cui_from;
 			int cui_to;
 		} write;
 	} u;
+
+	enum vvp_io_subtype	cui_io_subtype;
+
 	/**
 	 * Layout version when this IO is initialized
 	 */
@@ -117,6 +156,12 @@ struct ccc_io {
 	 */
 	struct ll_file_data *cui_fd;
 	struct kiocb *cui_iocb;
+
+	/* Readahead state. */
+	pgoff_t	cui_ra_start;
+	pgoff_t	cui_ra_count;
+	/* Set when cui_ra_{start,count} have been initialized. */
+	bool		cui_ra_valid;
 };
 
 /**
@@ -126,7 +171,7 @@ struct ccc_io {
 int cl_is_normalio(const struct lu_env *env, const struct cl_io *io);
 
 extern struct lu_context_key ccc_key;
-extern struct lu_context_key ccc_session_key;
+extern struct lu_context_key vvp_session_key;
 
 extern struct kmem_cache *vvp_lock_kmem;
 extern struct kmem_cache *vvp_object_kmem;
@@ -174,23 +219,23 @@ static inline struct cl_io *ccc_env_thread_io(const struct lu_env *env)
 	return io;
 }
 
-struct ccc_session {
-	struct ccc_io cs_ios;
+struct vvp_session {
+	struct vvp_io cs_ios;
 };
 
-static inline struct ccc_session *ccc_env_session(const struct lu_env *env)
+static inline struct vvp_session *vvp_env_session(const struct lu_env *env)
 {
-	struct ccc_session *ses;
+	struct vvp_session *ses;
 
-	ses = lu_context_key_get(env->le_ses, &ccc_session_key);
+	ses = lu_context_key_get(env->le_ses, &vvp_session_key);
 	LASSERT(ses);
 
 	return ses;
 }
 
-static inline struct ccc_io *ccc_env_io(const struct lu_env *env)
+static inline struct vvp_io *vvp_env_io(const struct lu_env *env)
 {
-	return &ccc_env_session(env)->cs_ios;
+	return &vvp_env_session(env)->cs_ios;
 }
 
 /**
@@ -282,10 +327,6 @@ void *ccc_key_init(const struct lu_context *ctx,
 		   struct lu_context_key *key);
 void ccc_key_fini(const struct lu_context *ctx,
 		  struct lu_context_key *key, void *data);
-void *ccc_session_key_init(const struct lu_context *ctx,
-			   struct lu_context_key *key);
-void  ccc_session_key_fini(const struct lu_context *ctx,
-			   struct lu_context_key *key, void *data);
 
 int ccc_req_init(const struct lu_env *env, struct cl_device *dev,
 		 struct cl_req *req);
@@ -293,16 +334,16 @@ void ccc_umount(const struct lu_env *env, struct cl_device *dev);
 int ccc_global_init(struct lu_device_type *device_type);
 void ccc_global_fini(struct lu_device_type *device_type);
 
-int ccc_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
+int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
 			  __u32 enqflags, enum cl_lock_mode mode,
 			  pgoff_t start, pgoff_t end);
-int ccc_io_one_lock(const struct lu_env *env, struct cl_io *io,
+int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
 		    __u32 enqflags, enum cl_lock_mode mode,
 		    loff_t start, loff_t end);
-void ccc_io_end(const struct lu_env *env, const struct cl_io_slice *ios);
-void ccc_io_advance(const struct lu_env *env, const struct cl_io_slice *ios,
+void vvp_io_end(const struct lu_env *env, const struct cl_io_slice *ios);
+void vvp_io_advance(const struct lu_env *env, const struct cl_io_slice *ios,
 		    size_t nob);
-void ccc_io_update_iov(const struct lu_env *env, struct ccc_io *cio,
+void vvp_io_update_iov(const struct lu_env *env, struct vvp_io *cio,
 		       struct cl_io *io);
 int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
 		  struct cl_io *io, loff_t start, size_t count, int *exceed);
@@ -356,7 +397,7 @@ static inline struct vvp_lock *cl2vvp_lock(const struct cl_lock_slice *slice)
 	return container_of(slice, struct vvp_lock, vlk_cl);
 }
 
-struct ccc_io *cl2ccc_io(const struct lu_env *env,
+struct vvp_io *cl2vvp_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice);
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice);
 
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index 86e73d5..1059c63 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -47,9 +47,6 @@
 #include "llite_internal.h"
 #include "vvp_internal.h"
 
-static struct vvp_io *cl2vvp_io(const struct lu_env *env,
-				const struct cl_io_slice *slice);
-
 /**
  * True, if \a io is a normal io, False for splice_{read,write}
  */
@@ -72,7 +69,7 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 			       struct inode *inode)
 {
 	struct ll_inode_info	*lli = ll_i2info(inode);
-	struct ccc_io		*cio = ccc_env_io(env);
+	struct vvp_io		*cio = vvp_env_io(env);
 	bool rc = true;
 
 	switch (io->ci_type) {
@@ -105,7 +102,7 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 static int vvp_io_write_iter_init(const struct lu_env *env,
 				  const struct cl_io_slice *ios)
 {
-	struct ccc_io *cio = cl2ccc_io(env, ios);
+	struct vvp_io *cio = cl2vvp_io(env, ios);
 
 	cl_page_list_init(&cio->u.write.cui_queue);
 	cio->u.write.cui_written = 0;
@@ -118,7 +115,7 @@ static int vvp_io_write_iter_init(const struct lu_env *env,
 static void vvp_io_write_iter_fini(const struct lu_env *env,
 				   const struct cl_io_slice *ios)
 {
-	struct ccc_io *cio = cl2ccc_io(env, ios);
+	struct vvp_io *cio = cl2vvp_io(env, ios);
 
 	LASSERT(cio->u.write.cui_queue.pl_nr == 0);
 }
@@ -129,8 +126,7 @@ static int vvp_io_fault_iter_init(const struct lu_env *env,
 	struct vvp_io *vio   = cl2vvp_io(env, ios);
 	struct inode  *inode = vvp_object_inode(ios->cis_obj);
 
-	LASSERT(inode ==
-		file_inode(cl2ccc_io(env, ios)->cui_fd->fd_file));
+	LASSERT(inode == file_inode(vio->cui_fd->fd_file));
 	vio->u.fault.ft_mtime = inode->i_mtime.tv_sec;
 	return 0;
 }
@@ -139,7 +135,7 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios)
 {
 	struct cl_io     *io  = ios->cis_io;
 	struct cl_object *obj = io->ci_obj;
-	struct ccc_io    *cio = cl2ccc_io(env, ios);
+	struct vvp_io    *cio = cl2vvp_io(env, ios);
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
 
@@ -225,7 +221,7 @@ static enum cl_lock_mode vvp_mode_from_vma(struct vm_area_struct *vma)
 }
 
 static int vvp_mmap_locks(const struct lu_env *env,
-			  struct ccc_io *vio, struct cl_io *io)
+			  struct vvp_io *vio, struct cl_io *io)
 {
 	struct ccc_thread_info *cti = ccc_env_info(env);
 	struct mm_struct       *mm = current->mm;
@@ -310,19 +306,19 @@ static int vvp_mmap_locks(const struct lu_env *env,
 static int vvp_io_rw_lock(const struct lu_env *env, struct cl_io *io,
 			  enum cl_lock_mode mode, loff_t start, loff_t end)
 {
-	struct ccc_io *cio = ccc_env_io(env);
+	struct vvp_io *cio = vvp_env_io(env);
 	int result;
 	int ast_flags = 0;
 
 	LASSERT(io->ci_type == CIT_READ || io->ci_type == CIT_WRITE);
 
-	ccc_io_update_iov(env, cio, io);
+	vvp_io_update_iov(env, cio, io);
 
 	if (io->u.ci_rw.crw_nonblock)
 		ast_flags |= CEF_NONBLOCK;
 	result = vvp_mmap_locks(env, cio, io);
 	if (result == 0)
-		result = ccc_io_one_lock(env, io, ast_flags, mode, start, end);
+		result = vvp_io_one_lock(env, io, ast_flags, mode, start, end);
 	return result;
 }
 
@@ -347,9 +343,11 @@ static int vvp_io_fault_lock(const struct lu_env *env,
 	/*
 	 * XXX LDLM_FL_CBPENDING
 	 */
-	return ccc_io_one_lock_index
-		(env, io, 0, vvp_mode_from_vma(vio->u.fault.ft_vma),
-		 io->u.ci_fault.ft_index, io->u.ci_fault.ft_index);
+	return vvp_io_one_lock_index(env,
+				     io, 0,
+				     vvp_mode_from_vma(vio->u.fault.ft_vma),
+				     io->u.ci_fault.ft_index,
+				     io->u.ci_fault.ft_index);
 }
 
 static int vvp_io_write_lock(const struct lu_env *env,
@@ -383,7 +381,7 @@ static int vvp_io_setattr_iter_init(const struct lu_env *env,
 static int vvp_io_setattr_lock(const struct lu_env *env,
 			       const struct cl_io_slice *ios)
 {
-	struct ccc_io *cio = ccc_env_io(env);
+	struct vvp_io *cio = vvp_env_io(env);
 	struct cl_io  *io  = ios->cis_io;
 	__u64 new_size;
 	__u32 enqflags = 0;
@@ -401,7 +399,8 @@ static int vvp_io_setattr_lock(const struct lu_env *env,
 		new_size = 0;
 	}
 	cio->u.setattr.cui_local_lock = SETATTR_EXTENT_LOCK;
-	return ccc_io_one_lock(env, io, enqflags, CLM_WRITE,
+
+	return vvp_io_one_lock(env, io, enqflags, CLM_WRITE,
 			       new_size, OBD_OBJECT_EOF);
 }
 
@@ -496,16 +495,15 @@ static int vvp_io_read_start(const struct lu_env *env,
 			     const struct cl_io_slice *ios)
 {
 	struct vvp_io     *vio   = cl2vvp_io(env, ios);
-	struct ccc_io     *cio   = cl2ccc_io(env, ios);
 	struct cl_io      *io    = ios->cis_io;
 	struct cl_object  *obj   = io->ci_obj;
 	struct inode      *inode = vvp_object_inode(obj);
-	struct file       *file  = cio->cui_fd->fd_file;
+	struct file       *file  = vio->cui_fd->fd_file;
 
 	int     result;
 	loff_t  pos = io->u.ci_rd.rd.crw_pos;
 	long    cnt = io->u.ci_rd.rd.crw_count;
-	long    tot = cio->cui_tot_count;
+	long    tot = vio->cui_tot_count;
 	int     exceed = 0;
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
@@ -526,7 +524,7 @@ static int vvp_io_read_start(const struct lu_env *env,
 			 inode->i_ino, cnt, pos, i_size_read(inode));
 
 	/* turn off the kernel's read-ahead */
-	cio->cui_fd->fd_file->f_ra.ra_pages = 0;
+	vio->cui_fd->fd_file->f_ra.ra_pages = 0;
 
 	/* initialize read-ahead window once per syscall */
 	if (!vio->cui_ra_valid) {
@@ -540,8 +538,8 @@ static int vvp_io_read_start(const struct lu_env *env,
 	file_accessed(file);
 	switch (vio->cui_io_subtype) {
 	case IO_NORMAL:
-		LASSERT(cio->cui_iocb->ki_pos == pos);
-		result = generic_file_read_iter(cio->cui_iocb, cio->cui_iter);
+		LASSERT(vio->cui_iocb->ki_pos == pos);
+		result = generic_file_read_iter(vio->cui_iocb, vio->cui_iter);
 		break;
 	case IO_SPLICE:
 		result = generic_file_splice_read(file, &pos,
@@ -564,7 +562,7 @@ out:
 			io->ci_continue = 0;
 		io->ci_nob += result;
 		ll_rw_stats_tally(ll_i2sbi(inode), current->pid,
-				  cio->cui_fd, pos, result, READ);
+				  vio->cui_fd, pos, result, READ);
 		result = 0;
 	}
 	return result;
@@ -676,7 +674,7 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 {
 	struct cl_object *obj = io->ci_obj;
 	struct inode *inode = vvp_object_inode(obj);
-	struct ccc_io *cio = ccc_env_io(env);
+	struct vvp_io *cio = vvp_env_io(env);
 	struct cl_page_list *queue = &cio->u.write.cui_queue;
 	struct cl_page *page;
 	int rc = 0;
@@ -755,7 +753,7 @@ int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io)
 static int vvp_io_write_start(const struct lu_env *env,
 			      const struct cl_io_slice *ios)
 {
-	struct ccc_io      *cio   = cl2ccc_io(env, ios);
+	struct vvp_io      *cio   = cl2vvp_io(env, ios);
 	struct cl_io       *io    = ios->cis_io;
 	struct cl_object   *obj   = io->ci_obj;
 	struct inode       *inode = vvp_object_inode(obj);
@@ -813,10 +811,10 @@ static int vvp_io_write_start(const struct lu_env *env,
 
 static int vvp_io_kernel_fault(struct vvp_fault_io *cfio)
 {
-	struct vm_fault *vmf = cfio->fault.ft_vmf;
+	struct vm_fault *vmf = cfio->ft_vmf;
 
-	cfio->fault.ft_flags = filemap_fault(cfio->ft_vma, vmf);
-	cfio->fault.ft_flags_valid = 1;
+	cfio->ft_flags = filemap_fault(cfio->ft_vma, vmf);
+	cfio->ft_flags_valid = 1;
 
 	if (vmf->page) {
 		CDEBUG(D_PAGE,
@@ -824,29 +822,29 @@ static int vvp_io_kernel_fault(struct vvp_fault_io *cfio)
 		       vmf->page, vmf->page->mapping, vmf->page->index,
 		       (long)vmf->page->flags, page_count(vmf->page),
 		       page_private(vmf->page), vmf->virtual_address);
-		if (unlikely(!(cfio->fault.ft_flags & VM_FAULT_LOCKED))) {
+		if (unlikely(!(cfio->ft_flags & VM_FAULT_LOCKED))) {
 			lock_page(vmf->page);
-			cfio->fault.ft_flags |= VM_FAULT_LOCKED;
+			cfio->ft_flags |= VM_FAULT_LOCKED;
 		}
 
 		cfio->ft_vmpage = vmf->page;
 		return 0;
 	}
 
-	if (cfio->fault.ft_flags & (VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV)) {
+	if (cfio->ft_flags & (VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV)) {
 		CDEBUG(D_PAGE, "got addr %p - SIGBUS\n", vmf->virtual_address);
 		return -EFAULT;
 	}
 
-	if (cfio->fault.ft_flags & VM_FAULT_OOM) {
+	if (cfio->ft_flags & VM_FAULT_OOM) {
 		CDEBUG(D_PAGE, "got addr %p - OOM\n", vmf->virtual_address);
 		return -ENOMEM;
 	}
 
-	if (cfio->fault.ft_flags & VM_FAULT_RETRY)
+	if (cfio->ft_flags & VM_FAULT_RETRY)
 		return -EAGAIN;
 
-	CERROR("Unknown error in page fault %d!\n", cfio->fault.ft_flags);
+	CERROR("Unknown error in page fault %d!\n", cfio->ft_flags);
 	return -EINVAL;
 }
 
@@ -1024,7 +1022,9 @@ out:
 	/* return unlocked vmpage to avoid deadlocking */
 	if (vmpage)
 		unlock_page(vmpage);
-	cfio->fault.ft_flags &= ~VM_FAULT_LOCKED;
+
+	cfio->ft_flags &= ~VM_FAULT_LOCKED;
+
 	return result;
 }
 
@@ -1047,7 +1047,7 @@ static int vvp_io_read_page(const struct lu_env *env,
 	struct cl_page	    *page   = slice->cpl_page;
 	struct inode              *inode  = vvp_object_inode(slice->cpl_obj);
 	struct ll_sb_info	 *sbi    = ll_i2sbi(inode);
-	struct ll_file_data       *fd     = cl2ccc_io(env, ios)->cui_fd;
+	struct ll_file_data       *fd     = cl2vvp_io(env, ios)->cui_fd;
 	struct ll_readahead_state *ras    = &fd->fd_ras;
 	struct cl_2queue	  *queue  = &io->ci_queue;
 
@@ -1080,7 +1080,7 @@ static const struct cl_io_operations vvp_io_ops = {
 			.cio_fini	= vvp_io_fini,
 			.cio_lock      = vvp_io_read_lock,
 			.cio_start     = vvp_io_read_start,
-			.cio_advance	= ccc_io_advance,
+			.cio_advance	= vvp_io_advance,
 		},
 		[CIT_WRITE] = {
 			.cio_fini      = vvp_io_fini,
@@ -1088,7 +1088,7 @@ static const struct cl_io_operations vvp_io_ops = {
 			.cio_iter_fini = vvp_io_write_iter_fini,
 			.cio_lock      = vvp_io_write_lock,
 			.cio_start     = vvp_io_write_start,
-			.cio_advance   = ccc_io_advance
+			.cio_advance   = vvp_io_advance,
 		},
 		[CIT_SETATTR] = {
 			.cio_fini       = vvp_io_setattr_fini,
@@ -1102,7 +1102,7 @@ static const struct cl_io_operations vvp_io_ops = {
 			.cio_iter_init = vvp_io_fault_iter_init,
 			.cio_lock      = vvp_io_fault_lock,
 			.cio_start     = vvp_io_fault_start,
-			.cio_end       = ccc_io_end
+			.cio_end       = vvp_io_end,
 		},
 		[CIT_FSYNC] = {
 			.cio_start  = vvp_io_fsync_start,
@@ -1119,7 +1119,6 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 		struct cl_io *io)
 {
 	struct vvp_io      *vio   = vvp_env_io(env);
-	struct ccc_io      *cio   = ccc_env_io(env);
 	struct inode       *inode = vvp_object_inode(obj);
 	int		 result;
 
@@ -1129,10 +1128,10 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 	       " ignore/verify layout %d/%d, layout version %d restore needed %d\n",
 	       PFID(lu_object_fid(&obj->co_lu)),
 	       io->ci_ignore_layout, io->ci_verify_layout,
-	       cio->cui_layout_gen, io->ci_restore_needed);
+	       vio->cui_layout_gen, io->ci_restore_needed);
 
-	CL_IO_SLICE_CLEAN(cio, cui_cl);
-	cl_io_slice_add(io, &cio->cui_cl, obj, &vvp_io_ops);
+	CL_IO_SLICE_CLEAN(vio, cui_cl);
+	cl_io_slice_add(io, &vio->cui_cl, obj, &vvp_io_ops);
 	vio->cui_ra_valid = false;
 	result = 0;
 	if (io->ci_type == CIT_READ || io->ci_type == CIT_WRITE) {
@@ -1146,7 +1145,7 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 		if (count == 0)
 			result = 1;
 		else
-			cio->cui_tot_count = count;
+			vio->cui_tot_count = count;
 
 		/* for read/write, we store the jobid in the inode, and
 		 * it'll be fetched by osc when building RPC.
@@ -1172,7 +1171,7 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 	 * because it might not grant layout lock in IT_OPEN.
 	 */
 	if (result == 0 && !io->ci_ignore_layout) {
-		result = ll_layout_refresh(inode, &cio->cui_layout_gen);
+		result = ll_layout_refresh(inode, &vio->cui_layout_gen);
 		if (result == -ENOENT)
 			/* If the inode on MDS has been removed, but the objects
 			 * on OSTs haven't been destroyed (async unlink), layout
@@ -1188,11 +1187,3 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 
 	return result;
 }
-
-static struct vvp_io *cl2vvp_io(const struct lu_env *env,
-				const struct cl_io_slice *slice)
-{
-	/* Calling just for assertion */
-	cl2ccc_io(env, slice);
-	return vvp_env_io(env);
-}
diff --git a/drivers/staging/lustre/lustre/llite/vvp_page.c b/drivers/staging/lustre/lustre/llite/vvp_page.c
index 5ebbe27..4f7dfe2 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_page.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_page.c
@@ -372,7 +372,7 @@ static int vvp_page_is_under_lock(const struct lu_env *env,
 {
 	if (io->ci_type == CIT_READ || io->ci_type == CIT_WRITE ||
 	    io->ci_type == CIT_FAULT) {
-		struct ccc_io *cio = ccc_env_io(env);
+		struct vvp_io *cio = vvp_env_io(env);
 
 		if (unlikely(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED))
 			*max_index = CL_PAGE_EOF;
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367433 — [PATCH 29/43] staging/lustre:llite: remove struct ll_ra_read

From: "John L. Hammond" <john.hammond@intel.com>

Ever since removal of the the unused function ll_ra_read_get(),
the struct ll_ra_read members lrr_reader and lrr_linkage and
the struct ll_readahead_state member ras_read_beads unnecessary
so remove them.
In struct vvp_io replace the struct ll_ra_read cui_bead member with
cui_ra_start and cui_ra_count.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13347
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 .../staging/lustre/lustre/llite/llite_internal.h   | 30 +++---------
 drivers/staging/lustre/lustre/llite/rw.c           | 53 ++++++----------------
 drivers/staging/lustre/lustre/llite/vvp_io.c       | 31 ++++---------
 3 files changed, 28 insertions(+), 86 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 78b3edd..9dd4325 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -528,13 +528,6 @@ struct ll_sb_info {
 	struct completion	 ll_kobj_unregister;
 };
 
-struct ll_ra_read {
-	pgoff_t	     lrr_start;
-	pgoff_t	     lrr_count;
-	struct task_struct *lrr_reader;
-	struct list_head	  lrr_linkage;
-};
-
 /*
  * per file-descriptor read-ahead data.
  */
@@ -593,12 +586,6 @@ struct ll_readahead_state {
 	 */
 	unsigned long   ras_request_index;
 	/*
-	 * list of struct ll_ra_read's one per read(2) call current in
-	 * progress against this file descriptor. Used by read-ahead code,
-	 * protected by ->ras_lock.
-	 */
-	struct list_head      ras_read_beads;
-	/*
 	 * The following 3 items are used for detecting the stride I/O
 	 * mode.
 	 * In stride I/O mode,
@@ -666,8 +653,7 @@ static inline int ll_need_32bit_api(struct ll_sb_info *sbi)
 #endif
 }
 
-void ll_ra_read_in(struct file *f, struct ll_ra_read *rar);
-void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar);
+void ll_ras_enter(struct file *f);
 
 /* llite/lproc_llite.c */
 int ldebugfs_register_mountpoint(struct dentry *parent,
@@ -876,14 +862,12 @@ struct vvp_io {
 			} fault;
 		} fault;
 	} u;
-	/**
-	 * Read-ahead state used by read and page-fault IO contexts.
-	 */
-	struct ll_ra_read    cui_bead;
-	/**
-	 * Set when cui_bead has been initialized.
-	 */
-	int		  cui_ra_window_set;
+
+	/* Readahead state. */
+	pgoff_t	cui_ra_start;
+	pgoff_t cui_ra_count;
+	/* Set when cui_ra_{start,count} have been initialized. */
+	bool	cui_ra_valid;
 };
 
 /**
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c
index 2c4d4c4..f06d8be 100644
--- a/drivers/staging/lustre/lustre/llite/rw.c
+++ b/drivers/staging/lustre/lustre/llite/rw.c
@@ -258,38 +258,15 @@ static int index_in_window(unsigned long index, unsigned long point,
 	return start <= index && index <= end;
 }
 
-static struct ll_readahead_state *ll_ras_get(struct file *f)
+void ll_ras_enter(struct file *f)
 {
-	struct ll_file_data       *fd;
-
-	fd = LUSTRE_FPRIVATE(f);
-	return &fd->fd_ras;
-}
-
-void ll_ra_read_in(struct file *f, struct ll_ra_read *rar)
-{
-	struct ll_readahead_state *ras;
-
-	ras = ll_ras_get(f);
+	struct ll_file_data *fd = LUSTRE_FPRIVATE(f);
+	struct ll_readahead_state *ras = &fd->fd_ras;
 
 	spin_lock(&ras->ras_lock);
 	ras->ras_requests++;
 	ras->ras_request_index = 0;
 	ras->ras_consecutive_requests++;
-	rar->lrr_reader = current;
-
-	list_add(&rar->lrr_linkage, &ras->ras_read_beads);
-	spin_unlock(&ras->ras_lock);
-}
-
-void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar)
-{
-	struct ll_readahead_state *ras;
-
-	ras = ll_ras_get(f);
-
-	spin_lock(&ras->ras_lock);
-	list_del_init(&rar->lrr_linkage);
 	spin_unlock(&ras->ras_lock);
 }
 
@@ -551,7 +528,6 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io,
 	unsigned long start = 0, end = 0, reserved;
 	unsigned long ra_end, len, mlen = 0;
 	struct inode *inode;
-	struct ll_ra_read *bead;
 	struct ra_io_arg *ria = &vti->vti_ria;
 	struct cl_object *clob;
 	int ret = 0;
@@ -575,17 +551,15 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io,
 	}
 
 	spin_lock(&ras->ras_lock);
-	if (vio->cui_ra_window_set)
-		bead = &vio->cui_bead;
-	else
-		bead = NULL;
 
 	/* Enlarge the RA window to encompass the full read */
-	if (bead && ras->ras_window_start + ras->ras_window_len <
-	    bead->lrr_start + bead->lrr_count) {
-		ras->ras_window_len = bead->lrr_start + bead->lrr_count -
+	if (vio->cui_ra_valid &&
+	    ras->ras_window_start + ras->ras_window_len <
+	    vio->cui_ra_start + vio->cui_ra_count) {
+		ras->ras_window_len = vio->cui_ra_start + vio->cui_ra_count -
 				      ras->ras_window_start;
 	}
+
 	/* Reserve a part of the read-ahead window that we'll be issuing */
 	if (ras->ras_window_len) {
 		start = ras->ras_next_readahead;
@@ -641,15 +615,15 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io,
 	CDEBUG(D_READA, DFID ": ria: %lu/%lu, bead: %lu/%lu, hit: %d\n",
 	       PFID(lu_object_fid(&clob->co_lu)),
 	       ria->ria_start, ria->ria_end,
-	       !bead ? 0 : bead->lrr_start,
-	       !bead ? 0 : bead->lrr_count,
+	       vio->cui_ra_valid ? vio->cui_ra_start : 0,
+	       vio->cui_ra_valid ? vio->cui_ra_count : 0,
 	       hit);
 
 	/* at least to extend the readahead window to cover current read */
-	if (!hit && bead &&
-	    bead->lrr_start + bead->lrr_count > ria->ria_start) {
+	if (!hit && vio->cui_ra_valid &&
+	    vio->cui_ra_start + vio->cui_ra_count > ria->ria_start) {
 		/* to the end of current read window. */
-		mlen = bead->lrr_start + bead->lrr_count - ria->ria_start;
+		mlen = vio->cui_ra_start + vio->cui_ra_count - ria->ria_start;
 		/* trim to RPC boundary */
 		start = ria->ria_start & (PTLRPC_MAX_BRW_PAGES - 1);
 		mlen = min(mlen, PTLRPC_MAX_BRW_PAGES - start);
@@ -730,7 +704,6 @@ void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras)
 	spin_lock_init(&ras->ras_lock);
 	ras_reset(inode, ras, 0);
 	ras->ras_requests = 0;
-	INIT_LIST_HEAD(&ras->ras_read_beads);
 }
 
 /*
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index eb6ce1c..86e73d5 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -500,7 +500,6 @@ static int vvp_io_read_start(const struct lu_env *env,
 	struct cl_io      *io    = ios->cis_io;
 	struct cl_object  *obj   = io->ci_obj;
 	struct inode      *inode = vvp_object_inode(obj);
-	struct ll_ra_read *bead  = &vio->cui_bead;
 	struct file       *file  = cio->cui_fd->fd_file;
 
 	int     result;
@@ -530,14 +529,11 @@ static int vvp_io_read_start(const struct lu_env *env,
 	cio->cui_fd->fd_file->f_ra.ra_pages = 0;
 
 	/* initialize read-ahead window once per syscall */
-	if (!vio->cui_ra_window_set) {
-		vio->cui_ra_window_set = 1;
-		bead->lrr_start = cl_index(obj, pos);
-		/*
-		 * XXX: explicit PAGE_CACHE_SIZE
-		 */
-		bead->lrr_count = cl_index(obj, tot + PAGE_CACHE_SIZE - 1);
-		ll_ra_read_in(file, bead);
+	if (!vio->cui_ra_valid) {
+		vio->cui_ra_valid = true;
+		vio->cui_ra_start = cl_index(obj, pos);
+		vio->cui_ra_count = cl_index(obj, tot + PAGE_CACHE_SIZE - 1);
+		ll_ras_enter(file);
 	}
 
 	/* BUG: 5972 */
@@ -574,17 +570,6 @@ out:
 	return result;
 }
 
-static void vvp_io_read_fini(const struct lu_env *env, const struct cl_io_slice *ios)
-{
-	struct vvp_io *vio = cl2vvp_io(env, ios);
-	struct ccc_io *cio = cl2ccc_io(env, ios);
-
-	if (vio->cui_ra_window_set)
-		ll_ra_read_ex(cio->cui_fd->fd_file, &vio->cui_bead);
-
-	vvp_io_fini(env, ios);
-}
-
 static int vvp_io_commit_sync(const struct lu_env *env, struct cl_io *io,
 			      struct cl_page_list *plist, int from, int to)
 {
@@ -1092,10 +1077,10 @@ static int vvp_io_read_page(const struct lu_env *env,
 static const struct cl_io_operations vvp_io_ops = {
 	.op = {
 		[CIT_READ] = {
-			.cio_fini      = vvp_io_read_fini,
+			.cio_fini	= vvp_io_fini,
 			.cio_lock      = vvp_io_read_lock,
 			.cio_start     = vvp_io_read_start,
-			.cio_advance   = ccc_io_advance
+			.cio_advance	= ccc_io_advance,
 		},
 		[CIT_WRITE] = {
 			.cio_fini      = vvp_io_fini,
@@ -1148,7 +1133,7 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 
 	CL_IO_SLICE_CLEAN(cio, cui_cl);
 	cl_io_slice_add(io, &cio->cui_cl, obj, &vvp_io_ops);
-	vio->cui_ra_window_set = 0;
+	vio->cui_ra_valid = false;
 	result = 0;
 	if (io->ci_type == CIT_READ || io->ci_type == CIT_WRITE) {
 		size_t count;
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367435 — [PATCH 37/43] staging/lustre/llite: Remove ccc_global_{init,fini}()

From: John Hammond <john.hammond@intel.com>

Merge their contents into vvp_global_{init,fini}() and
{init,exit}_lustre_lite().
Rename ccc_inode_fini_* to cl_inode_fini_*.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 53 +++++-----------------
 .../staging/lustre/lustre/llite/llite_internal.h   |  7 +--
 drivers/staging/lustre/lustre/llite/super25.c      | 14 +++++-
 drivers/staging/lustre/lustre/llite/vvp_dev.c      | 25 ++++++----
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  4 +-
 5 files changed, 46 insertions(+), 57 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 5b523e33..164737a 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -72,49 +72,18 @@
  */
 
 /**
- * An `emergency' environment used by ccc_inode_fini() when cl_env_get()
- * fails. Access to this environment is serialized by ccc_inode_fini_guard
+ * An `emergency' environment used by cl_inode_fini() when cl_env_get()
+ * fails. Access to this environment is serialized by cl_inode_fini_guard
  * mutex.
  */
-static struct lu_env *ccc_inode_fini_env;
+struct lu_env *cl_inode_fini_env;
+int cl_inode_fini_refcheck;
 
 /**
  * A mutex serializing calls to slp_inode_fini() under extreme memory
  * pressure, when environments cannot be allocated.
  */
-static DEFINE_MUTEX(ccc_inode_fini_guard);
-static int dummy_refcheck;
-
-int ccc_global_init(struct lu_device_type *device_type)
-{
-	int result;
-
-	result = lu_device_type_init(device_type);
-	if (result)
-		return result;
-
-	ccc_inode_fini_env = cl_env_alloc(&dummy_refcheck,
-					  LCT_REMEMBER | LCT_NOREF);
-	if (IS_ERR(ccc_inode_fini_env)) {
-		result = PTR_ERR(ccc_inode_fini_env);
-		goto out_device;
-	}
-
-	ccc_inode_fini_env->le_ctx.lc_cookie = 0x4;
-	return 0;
-out_device:
-	lu_device_type_fini(device_type);
-	return result;
-}
-
-void ccc_global_fini(struct lu_device_type *device_type)
-{
-	if (ccc_inode_fini_env) {
-		cl_env_put(ccc_inode_fini_env, &dummy_refcheck);
-		ccc_inode_fini_env = NULL;
-	}
-	lu_device_type_fini(device_type);
-}
+static DEFINE_MUTEX(cl_inode_fini_guard);
 
 int cl_setattr_ost(struct inode *inode, const struct iattr *attr)
 {
@@ -286,10 +255,10 @@ void cl_inode_fini(struct inode *inode)
 		env = cl_env_get(&refcheck);
 		emergency = IS_ERR(env);
 		if (emergency) {
-			mutex_lock(&ccc_inode_fini_guard);
-			LASSERT(ccc_inode_fini_env);
-			cl_env_implant(ccc_inode_fini_env, &refcheck);
-			env = ccc_inode_fini_env;
+			mutex_lock(&cl_inode_fini_guard);
+			LASSERT(cl_inode_fini_env);
+			cl_env_implant(cl_inode_fini_env, &refcheck);
+			env = cl_inode_fini_env;
 		}
 		/*
 		 * cl_object cache is a slave to inode cache (which, in turn
@@ -301,8 +270,8 @@ void cl_inode_fini(struct inode *inode)
 		cl_object_put_last(env, clob);
 		lli->lli_clob = NULL;
 		if (emergency) {
-			cl_env_unplant(ccc_inode_fini_env, &refcheck);
-			mutex_unlock(&ccc_inode_fini_guard);
+			cl_env_unplant(cl_inode_fini_env, &refcheck);
+			mutex_unlock(&cl_inode_fini_guard);
 		} else {
 			cl_env_put(env, &refcheck);
 		}
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index a6ee2fe..993cee8 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -984,9 +984,6 @@ void free_rmtperm_hash(struct hlist_head *hash);
 int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm);
 int lustre_check_remote_perm(struct inode *inode, int mask);
 
-/* llite/llite_cl.c */
-extern struct lu_device_type vvp_device_type;
-
 /**
  * Common IO arguments for various VFS I/O interfaces.
  */
@@ -1371,4 +1368,8 @@ void ll_xattr_fini(void);
 int ll_page_sync_io(const struct lu_env *env, struct cl_io *io,
 		    struct cl_page *page, enum cl_req_type crt);
 
+/* lcommon_cl.c */
+extern struct lu_env *cl_inode_fini_env;
+extern int cl_inode_fini_refcheck;
+
 #endif /* LLITE_INTERNAL_H */
diff --git a/drivers/staging/lustre/lustre/llite/super25.c b/drivers/staging/lustre/lustre/llite/super25.c
index 61856d3..415750b 100644
--- a/drivers/staging/lustre/lustre/llite/super25.c
+++ b/drivers/staging/lustre/lustre/llite/super25.c
@@ -164,9 +164,18 @@ static int __init lustre_init(void)
 	if (rc != 0)
 		goto out_sysfs;
 
+	cl_inode_fini_env = cl_env_alloc(&cl_inode_fini_refcheck,
+					 LCT_REMEMBER | LCT_NOREF);
+	if (IS_ERR(cl_inode_fini_env)) {
+		rc = PTR_ERR(cl_inode_fini_env);
+		goto out_vvp;
+	}
+
+	cl_inode_fini_env->le_ctx.lc_cookie = 0x4;
+
 	rc = ll_xattr_init();
 	if (rc != 0)
-		goto out_vvp;
+		goto out_inode_fini_env;
 
 	lustre_register_client_fill_super(ll_fill_super);
 	lustre_register_kill_super_cb(ll_kill_super);
@@ -174,6 +183,8 @@ static int __init lustre_init(void)
 
 	return 0;
 
+out_inode_fini_env:
+	cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
 out_vvp:
 	vvp_global_fini();
 out_sysfs:
@@ -198,6 +209,7 @@ static void __exit lustre_exit(void)
 	kset_unregister(llite_kset);
 
 	ll_xattr_fini();
+	cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
 	vvp_global_fini();
 
 	kmem_cache_destroy(ll_inode_cachep);
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c
index c27cb1a..2b1025c 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_dev.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c
@@ -298,20 +298,27 @@ struct lu_device_type vvp_device_type = {
  */
 int vvp_global_init(void)
 {
-	int result;
+	int rc;
 
-	result = lu_kmem_init(vvp_caches);
-	if (result == 0) {
-		result = ccc_global_init(&vvp_device_type);
-		if (result != 0)
-			lu_kmem_fini(vvp_caches);
-	}
-	return result;
+	rc = lu_kmem_init(vvp_caches);
+	if (rc != 0)
+		return rc;
+
+	rc = lu_device_type_init(&vvp_device_type);
+	if (rc != 0)
+		goto out_kmem;
+
+	return 0;
+
+out_kmem:
+	lu_kmem_fini(vvp_caches);
+
+	return rc;
 }
 
 void vvp_global_fini(void)
 {
-	ccc_global_fini(&vvp_device_type);
+	lu_device_type_fini(&vvp_device_type);
 	lu_kmem_fini(vvp_caches);
 }
 
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index 0e15202..fe29fb5 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -164,6 +164,8 @@ struct vvp_io {
 	bool		vui_ra_valid;
 };
 
+extern struct lu_device_type vvp_device_type;
+
 extern struct lu_context_key vvp_session_key;
 extern struct lu_context_key vvp_thread_key;
 
@@ -324,8 +326,6 @@ void ccc_key_fini(const struct lu_context *ctx,
 		  struct lu_context_key *key, void *data);
 
 void ccc_umount(const struct lu_env *env, struct cl_device *dev);
-int ccc_global_init(struct lu_device_type *device_type);
-void ccc_global_fini(struct lu_device_type *device_type);
 
 static inline struct lu_device *vvp2lu_dev(struct vvp_device *vdv)
 {
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367437 — [PATCH 38/43] staging/lustre/llite: Move ll_dirent_type_get and make it static

From: Oleg Drokin <green@linuxhacker.ru>

ll_dirent_type_get is only used in one place in llite/dir.c,
so move it there.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/llite/dir.c          | 22 ++++++++++++++++++++++
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 22 ----------------------
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  1 -
 3 files changed, 22 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 2ca4b0e..b085fb4 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -469,6 +469,28 @@ fail:
 	goto out_unlock;
 }
 
+/**
+ * return IF_* type for given lu_dirent entry.
+ * IF_* flag shld be converted to particular OS file type in
+ * platform llite module.
+ */
+static __u16 ll_dirent_type_get(struct lu_dirent *ent)
+{
+	__u16 type = 0;
+	struct luda_type *lt;
+	int len = 0;
+
+	if (le32_to_cpu(ent->lde_attrs) & LUDA_TYPE) {
+		const unsigned int align = sizeof(struct luda_type) - 1;
+
+		len = le16_to_cpu(ent->lde_namelen);
+		len = (len + align) & ~align;
+		lt = (void *)ent->lde_name + len;
+		type = IFTODT(le16_to_cpu(lt->lt_type));
+	}
+	return type;
+}
+
 int ll_dir_read(struct inode *inode, struct dir_context *ctx)
 {
 	struct ll_inode_info *info       = ll_i2info(inode);
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 164737a..6c00715 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -280,28 +280,6 @@ void cl_inode_fini(struct inode *inode)
 }
 
 /**
- * return IF_* type for given lu_dirent entry.
- * IF_* flag shld be converted to particular OS file type in
- * platform llite module.
- */
-__u16 ll_dirent_type_get(struct lu_dirent *ent)
-{
-	__u16 type = 0;
-	struct luda_type *lt;
-	int len = 0;
-
-	if (le32_to_cpu(ent->lde_attrs) & LUDA_TYPE) {
-		const unsigned int align = sizeof(struct luda_type) - 1;
-
-		len = le16_to_cpu(ent->lde_namelen);
-		len = (len + align) & ~align;
-		lt = (void *)ent->lde_name + len;
-		type = IFTODT(le16_to_cpu(lt->lt_type));
-	}
-	return type;
-}
-
-/**
  * build inode number from passed @fid
  */
 __u64 cl_fid_build_ino(const struct lu_fid *fid, int api32)
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index fe29fb5..06e2726 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -376,7 +376,6 @@ int cl_file_inode_init(struct inode *inode, struct lustre_md *md);
 void cl_inode_fini(struct inode *inode);
 int cl_local_size(struct inode *inode);
 
-__u16 ll_dirent_type_get(struct lu_dirent *ent);
 __u64 cl_fid_build_ino(const struct lu_fid *fid, int api32);
 __u32 cl_fid_build_gen(const struct lu_fid *fid);
 
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367438 — [PATCH 16/43] staging/lustre/llite: remove some cl wrappers

From: "John L. Hammond" <john.hammond@intel.com>

In llite remove the wrapper functions and macros:
  cl_i2info()
  cl_i2sbi()
  cl_iattr2fd()
  cl_inode_info
  cl_inode_mode()
  cl_inode_{a,m,c}time()
  cl_isize_{read,write,write_nolock}()

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12850
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/llite/dir.c          |  2 +-
 drivers/staging/lustre/lustre/llite/file.c         |  8 ++--
 drivers/staging/lustre/lustre/llite/glimpse.c      | 10 ++---
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 45 +++++++++++-----------
 .../staging/lustre/lustre/llite/llite_internal.h   | 32 ---------------
 drivers/staging/lustre/lustre/llite/llite_lib.c    |  2 +-
 drivers/staging/lustre/lustre/llite/vvp_object.c   |  4 +-
 7 files changed, 35 insertions(+), 68 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 4e0a3e5..2ca4b0e 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -191,7 +191,7 @@ static int ll_dir_filler(void *_hash, struct page *page0)
 		body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
 		/* Checked by mdc_readpage() */
 		if (body->valid & OBD_MD_FLSIZE)
-			cl_isize_write(inode, body->size);
+			i_size_write(inode, body->size);
 
 		nrdpgs = (request->rq_bulk->bd_nob_transferred+PAGE_CACHE_SIZE-1)
 			 >> PAGE_CACHE_SHIFT;
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 8fc9da0..c3c258f 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -1036,7 +1036,7 @@ int ll_merge_attr(const struct lu_env *env, struct inode *inode)
 	CDEBUG(D_VFSTRACE, DFID " updating i_size %llu\n",
 	       PFID(&lli->lli_fid), attr->cat_size);
 
-	cl_isize_write_nolock(inode, attr->cat_size);
+	i_size_write(inode, attr->cat_size);
 
 	inode->i_blocks = attr->cat_blocks;
 
@@ -1592,7 +1592,7 @@ ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
 	LASSERT(!fd->fd_grouplock.cg_lock);
 	spin_unlock(&lli->lli_lock);
 
-	rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
+	rc = cl_get_grouplock(ll_i2info(inode)->lli_clob,
 			      arg, (file->f_flags & O_NONBLOCK), &grouplock);
 	if (rc)
 		return rc;
@@ -2614,7 +2614,7 @@ int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
 		return PTR_ERR(env);
 
 	io = ccc_env_thread_io(env);
-	io->ci_obj = cl_i2info(inode)->lli_clob;
+	io->ci_obj = ll_i2info(inode)->lli_clob;
 	io->ci_ignore_layout = ignore_layout;
 
 	/* initialize parameters for sync */
@@ -3629,7 +3629,7 @@ int ll_layout_restore(struct inode *inode)
 	       sizeof(hur->hur_user_item[0].hui_fid));
 	hur->hur_user_item[0].hui_extent.length = -1;
 	hur->hur_request.hr_itemcount = 1;
-	rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp,
+	rc = obd_iocontrol(LL_IOC_HSM_REQUEST, ll_i2sbi(inode)->ll_md_exp,
 			   len, hur, NULL);
 	kfree(hur);
 	return rc;
diff --git a/drivers/staging/lustre/lustre/llite/glimpse.c b/drivers/staging/lustre/lustre/llite/glimpse.c
index 88bc7c9..9b0e2ec 100644
--- a/drivers/staging/lustre/lustre/llite/glimpse.c
+++ b/drivers/staging/lustre/lustre/llite/glimpse.c
@@ -87,7 +87,7 @@ int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
 		    struct inode *inode, struct cl_object *clob, int agl)
 {
 	struct cl_lock_descr *descr = &ccc_env_info(env)->cti_descr;
-	struct cl_inode_info *lli   = cl_i2info(inode);
+	struct ll_inode_info *lli   = ll_i2info(inode);
 	const struct lu_fid  *fid   = lu_object_fid(&clob->co_lu);
 	struct ccc_io	*cio   = ccc_env_io(env);
 	struct cl_lock       *lock;
@@ -140,7 +140,7 @@ int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
 			result = cl_wait(env, lock);
 			if (result == 0) {
 				ll_merge_attr(env, inode);
-				if (cl_isize_read(inode) > 0 &&
+				if (i_size_read(inode) > 0 &&
 				    inode->i_blocks == 0) {
 					/*
 					 * LU-417: Add dirty pages block count
@@ -167,11 +167,11 @@ static int cl_io_get(struct inode *inode, struct lu_env **envout,
 {
 	struct lu_env	  *env;
 	struct cl_io	   *io;
-	struct cl_inode_info   *lli = cl_i2info(inode);
+	struct ll_inode_info	*lli = ll_i2info(inode);
 	struct cl_object       *clob = lli->lli_clob;
 	int result;
 
-	if (S_ISREG(cl_inode_mode(inode))) {
+	if (S_ISREG(inode->i_mode)) {
 		env = cl_env_get(refcheck);
 		if (!IS_ERR(env)) {
 			io = ccc_env_thread_io(env);
@@ -240,7 +240,7 @@ int cl_local_size(struct inode *inode)
 	int		      result;
 	int		      refcheck;
 
-	if (!cl_i2info(inode)->lli_has_smd)
+	if (!ll_i2info(inode)->lli_has_smd)
 		return 0;
 
 	result = cl_io_get(inode, &env, &io, &refcheck);
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 4871d0f..fde96d3 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -417,9 +417,9 @@ int ccc_object_glimpse(const struct lu_env *env,
 {
 	struct inode *inode = ccc_object_inode(obj);
 
-	lvb->lvb_mtime = cl_inode_mtime(inode);
-	lvb->lvb_atime = cl_inode_atime(inode);
-	lvb->lvb_ctime = cl_inode_ctime(inode);
+	lvb->lvb_mtime = LTIME_S(inode->i_mtime);
+	lvb->lvb_atime = LTIME_S(inode->i_atime);
+	lvb->lvb_ctime = LTIME_S(inode->i_ctime);
 	/*
 	 * LU-417: Add dirty pages block count lest i_blocks reports 0, some
 	 * "cp" or "tar" on remote node may think it's a completely sparse file
@@ -731,7 +731,7 @@ int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
 				 * linux-2.6.18-128.1.1 miss to do that.
 				 * --bug 17336
 				 */
-				loff_t size = cl_isize_read(inode);
+				loff_t size = i_size_read(inode);
 				loff_t cur_index = start >> PAGE_CACHE_SHIFT;
 				loff_t size_index = (size - 1) >>
 						    PAGE_CACHE_SHIFT;
@@ -752,11 +752,11 @@ int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
 		 * which will always be >= the kms value here.
 		 * b=11081
 		 */
-		if (cl_isize_read(inode) < kms) {
-			cl_isize_write_nolock(inode, kms);
+		if (i_size_read(inode) < kms) {
+			i_size_write(inode, kms);
 			CDEBUG(D_VFSTRACE, DFID " updating i_size %llu\n",
 			       PFID(lu_object_fid(&obj->co_lu)),
-			       (__u64)cl_isize_read(inode));
+			       (__u64)i_size_read(inode));
 		}
 	}
 	ccc_object_size_unlock(obj);
@@ -816,14 +816,14 @@ void ccc_req_attr_set(const struct lu_env *env,
 	if (slice->crs_req->crq_type == CRT_WRITE) {
 		if (flags & OBD_MD_FLEPOCH) {
 			oa->o_valid |= OBD_MD_FLEPOCH;
-			oa->o_ioepoch = cl_i2info(inode)->lli_ioepoch;
+			oa->o_ioepoch = ll_i2info(inode)->lli_ioepoch;
 			valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME |
 				       OBD_MD_FLUID | OBD_MD_FLGID;
 		}
 	}
 	obdo_from_inode(oa, inode, valid_flags & flags);
-	obdo_set_parent_fid(oa, &cl_i2info(inode)->lli_fid);
-	memcpy(attr->cra_jobid, cl_i2info(inode)->lli_jobid,
+	obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
+	memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid,
 	       JOBSTATS_JOBID_SIZE);
 }
 
@@ -844,7 +844,7 @@ int cl_setattr_ost(struct inode *inode, const struct iattr *attr)
 		return PTR_ERR(env);
 
 	io = ccc_env_thread_io(env);
-	io->ci_obj = cl_i2info(inode)->lli_clob;
+	io->ci_obj = ll_i2info(inode)->lli_clob;
 
 	io->u.ci_setattr.sa_attr.lvb_atime = LTIME_S(attr->ia_atime);
 	io->u.ci_setattr.sa_attr.lvb_mtime = LTIME_S(attr->ia_mtime);
@@ -860,7 +860,7 @@ again:
 			/* populate the file descriptor for ftruncate to honor
 			 * group lock - see LU-787
 			 */
-			cio->cui_fd = cl_iattr2fd(inode, attr);
+			cio->cui_fd = LUSTRE_FPRIVATE(attr->ia_file);
 
 		result = cl_io_loop(env, io);
 	} else {
@@ -949,11 +949,10 @@ struct page *cl2vm_page(const struct cl_page_slice *slice)
 int ccc_object_invariant(const struct cl_object *obj)
 {
 	struct inode	 *inode = ccc_object_inode(obj);
-	struct cl_inode_info *lli   = cl_i2info(inode);
+	struct ll_inode_info	*lli	= ll_i2info(inode);
 
-	return (S_ISREG(cl_inode_mode(inode)) ||
-		/* i_mode of unlinked inode is zeroed. */
-		cl_inode_mode(inode) == 0) && lli->lli_clob == obj;
+	return (S_ISREG(inode->i_mode) || inode->i_mode == 0) &&
+	       lli->lli_clob == obj;
 }
 
 struct inode *ccc_object_inode(const struct cl_object *obj)
@@ -973,7 +972,7 @@ struct inode *ccc_object_inode(const struct cl_object *obj)
 int cl_file_inode_init(struct inode *inode, struct lustre_md *md)
 {
 	struct lu_env	*env;
-	struct cl_inode_info *lli;
+	struct ll_inode_info *lli;
 	struct cl_object     *clob;
 	struct lu_site       *site;
 	struct lu_fid	*fid;
@@ -987,14 +986,14 @@ int cl_file_inode_init(struct inode *inode, struct lustre_md *md)
 	int refcheck;
 
 	LASSERT(md->body->valid & OBD_MD_FLID);
-	LASSERT(S_ISREG(cl_inode_mode(inode)));
+	LASSERT(S_ISREG(inode->i_mode));
 
 	env = cl_env_get(&refcheck);
 	if (IS_ERR(env))
 		return PTR_ERR(env);
 
-	site = cl_i2sbi(inode)->ll_site;
-	lli  = cl_i2info(inode);
+	site = ll_i2sbi(inode)->ll_site;
+	lli  = ll_i2info(inode);
 	fid  = &lli->lli_fid;
 	LASSERT(fid_is_sane(fid));
 
@@ -1071,7 +1070,7 @@ static void cl_object_put_last(struct lu_env *env, struct cl_object *obj)
 void cl_inode_fini(struct inode *inode)
 {
 	struct lu_env	   *env;
-	struct cl_inode_info    *lli  = cl_i2info(inode);
+	struct ll_inode_info    *lli  = ll_i2info(inode);
 	struct cl_object	*clob = lli->lli_clob;
 	int refcheck;
 	int emergency;
@@ -1168,10 +1167,10 @@ __u32 cl_fid_build_gen(const struct lu_fid *fid)
  */
 struct lov_stripe_md *ccc_inode_lsm_get(struct inode *inode)
 {
-	return lov_lsm_get(cl_i2info(inode)->lli_clob);
+	return lov_lsm_get(ll_i2info(inode)->lli_clob);
 }
 
 inline void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm)
 {
-	lov_lsm_put(cl_i2info(inode)->lli_clob, lsm);
+	lov_lsm_put(ll_i2info(inode)->lli_clob, lsm);
 }
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index c1d747a..ffed507 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -1293,38 +1293,6 @@ typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode,
 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd);
 void ll_iocontrol_unregister(void *magic);
 
-/* lclient compat stuff */
-#define cl_inode_info ll_inode_info
-#define cl_i2info(info) ll_i2info(info)
-#define cl_inode_mode(inode) ((inode)->i_mode)
-#define cl_i2sbi ll_i2sbi
-
-static inline struct ll_file_data *cl_iattr2fd(struct inode *inode,
-					       const struct iattr *attr)
-{
-	LASSERT(attr->ia_valid & ATTR_FILE);
-	return LUSTRE_FPRIVATE(attr->ia_file);
-}
-
-static inline void cl_isize_write_nolock(struct inode *inode, loff_t kms)
-{
-	LASSERT(mutex_is_locked(&ll_i2info(inode)->lli_size_mutex));
-	i_size_write(inode, kms);
-}
-
-static inline void cl_isize_write(struct inode *inode, loff_t kms)
-{
-	ll_inode_size_lock(inode);
-	i_size_write(inode, kms);
-	ll_inode_size_unlock(inode);
-}
-
-#define cl_isize_read(inode)	     i_size_read(inode)
-
-#define cl_inode_atime(inode) LTIME_S((inode)->i_atime)
-#define cl_inode_ctime(inode) LTIME_S((inode)->i_ctime)
-#define cl_inode_mtime(inode) LTIME_S((inode)->i_mtime)
-
 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
 		       enum cl_fsync_mode mode, int ignore_layout);
 
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 0b4e0db..041d221 100644
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -1698,7 +1698,7 @@ void ll_read_inode2(struct inode *inode, void *opaque)
 
 void ll_delete_inode(struct inode *inode)
 {
-	struct cl_inode_info *lli = cl_i2info(inode);
+	struct ll_inode_info *lli = ll_i2info(inode);
 
 	if (S_ISREG(inode->i_mode) && lli->lli_clob)
 		/* discard all dirty pages before truncating them, required by
diff --git a/drivers/staging/lustre/lustre/llite/vvp_object.c b/drivers/staging/lustre/lustre/llite/vvp_object.c
index b9a1d01..d03eb2b 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_object.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_object.c
@@ -112,7 +112,7 @@ static int vvp_attr_set(const struct lu_env *env, struct cl_object *obj,
 	if (valid & CAT_CTIME)
 		inode->i_ctime.tv_sec = attr->cat_ctime;
 	if (0 && valid & CAT_SIZE)
-		cl_isize_write_nolock(inode, attr->cat_size);
+		i_size_write(inode, attr->cat_size);
 	/* not currently necessary */
 	if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE))
 		mark_inode_dirty(inode);
@@ -196,7 +196,7 @@ static const struct lu_object_operations vvp_lu_obj_ops = {
 
 struct ccc_object *cl_inode2ccc(struct inode *inode)
 {
-	struct cl_inode_info *lli = cl_i2info(inode);
+	struct ll_inode_info *lli = ll_i2info(inode);
 	struct cl_object     *obj = lli->lli_clob;
 	struct lu_object     *lu;
 
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367439 — [PATCH 27/43] staging/lustre/llite: rename ccc_page to vvp_page

From: "John L. Hammond" <john.hammond@intel.com>

Rename struct ccc_page to struct vvp_page and remove obsolete CCC page
methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13086
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/cl_object.h  |   2 +-
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   |  28 ------
 drivers/staging/lustre/lustre/llite/llite_close.c  |  12 +--
 .../staging/lustre/lustre/llite/llite_internal.h   |   4 +-
 drivers/staging/lustre/lustre/llite/rw.c           |  14 +--
 drivers/staging/lustre/lustre/llite/rw26.c         |  10 +-
 drivers/staging/lustre/lustre/llite/vvp_dev.c      |  12 +--
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  38 ++++----
 drivers/staging/lustre/lustre/llite/vvp_io.c       |  34 +++----
 drivers/staging/lustre/lustre/llite/vvp_object.c   |   2 +-
 drivers/staging/lustre/lustre/llite/vvp_page.c     | 107 +++++++++++++--------
 11 files changed, 131 insertions(+), 132 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h b/drivers/staging/lustre/lustre/include/cl_object.h
index d3271ff..3488349 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -769,7 +769,7 @@ struct cl_page {
 /**
  * Per-layer part of cl_page.
  *
- * \see ccc_page, lov_page, osc_page
+ * \see vvp_page, lov_page, osc_page
  */
 struct cl_page_slice {
 	struct cl_page		  *cpl_page;
diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 9db0510..0762032 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -259,29 +259,6 @@ static void vvp_object_size_unlock(struct cl_object *obj)
 
 /*****************************************************************************
  *
- * Page operations.
- *
- */
-
-int ccc_fail(const struct lu_env *env, const struct cl_page_slice *slice)
-{
-	/*
-	 * Cached read?
-	 */
-	LBUG();
-	return 0;
-}
-
-int ccc_transient_page_prep(const struct lu_env *env,
-			    const struct cl_page_slice *slice,
-			    struct cl_io *unused)
-{
-	/* transient page should always be sent. */
-	return 0;
-}
-
-/*****************************************************************************
- *
  * Lock operations.
  *
  */
@@ -614,11 +591,6 @@ struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice)
 	return container_of0(slice, struct ccc_req, crq_cl);
 }
 
-struct page *cl2vm_page(const struct cl_page_slice *slice)
-{
-	return cl2ccc_page(slice)->cpg_page;
-}
-
 /**
  * Initialize or update CLIO structures for regular files when new
  * meta-data arrives from the server.
diff --git a/drivers/staging/lustre/lustre/llite/llite_close.c b/drivers/staging/lustre/lustre/llite/llite_close.c
index 6e99d34..8d23980 100644
--- a/drivers/staging/lustre/lustre/llite/llite_close.c
+++ b/drivers/staging/lustre/lustre/llite/llite_close.c
@@ -46,26 +46,26 @@
 #include "llite_internal.h"
 
 /** records that a write is in flight */
-void vvp_write_pending(struct vvp_object *club, struct ccc_page *page)
+void vvp_write_pending(struct vvp_object *club, struct vvp_page *page)
 {
 	struct ll_inode_info *lli = ll_i2info(club->vob_inode);
 
 	spin_lock(&lli->lli_lock);
 	lli->lli_flags |= LLIF_SOM_DIRTY;
-	if (page && list_empty(&page->cpg_pending_linkage))
-		list_add(&page->cpg_pending_linkage, &club->vob_pending_list);
+	if (page && list_empty(&page->vpg_pending_linkage))
+		list_add(&page->vpg_pending_linkage, &club->vob_pending_list);
 	spin_unlock(&lli->lli_lock);
 }
 
 /** records that a write has completed */
-void vvp_write_complete(struct vvp_object *club, struct ccc_page *page)
+void vvp_write_complete(struct vvp_object *club, struct vvp_page *page)
 {
 	struct ll_inode_info *lli = ll_i2info(club->vob_inode);
 	int rc = 0;
 
 	spin_lock(&lli->lli_lock);
-	if (page && !list_empty(&page->cpg_pending_linkage)) {
-		list_del_init(&page->cpg_pending_linkage);
+	if (page && !list_empty(&page->vpg_pending_linkage)) {
+		list_del_init(&page->vpg_pending_linkage);
 		rc = 1;
 	}
 	spin_unlock(&lli->lli_lock);
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 1c39d15..78b3edd 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -828,8 +828,8 @@ struct ll_close_queue {
 	atomic_t		lcq_stop;
 };
 
-void vvp_write_pending(struct vvp_object *club, struct ccc_page *page);
-void vvp_write_complete(struct vvp_object *club, struct ccc_page *page);
+void vvp_write_pending(struct vvp_object *club, struct vvp_page *page);
+void vvp_write_complete(struct vvp_object *club, struct vvp_page *page);
 
 /* specific architecture can implement only part of this list */
 enum vvp_io_subtype {
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c
index 5ae0993..2c4d4c4 100644
--- a/drivers/staging/lustre/lustre/llite/rw.c
+++ b/drivers/staging/lustre/lustre/llite/rw.c
@@ -298,21 +298,21 @@ static int cl_read_ahead_page(const struct lu_env *env, struct cl_io *io,
 			      struct cl_object *clob, pgoff_t *max_index)
 {
 	struct page *vmpage = page->cp_vmpage;
-	struct ccc_page *cp;
+	struct vvp_page *vpg;
 	int	      rc;
 
 	rc = 0;
 	cl_page_assume(env, io, page);
 	lu_ref_add(&page->cp_reference, "ra", current);
-	cp = cl2ccc_page(cl_object_page_slice(clob, page));
-	if (!cp->cpg_defer_uptodate && !PageUptodate(vmpage)) {
+	vpg = cl2vvp_page(cl_object_page_slice(clob, page));
+	if (!vpg->vpg_defer_uptodate && !PageUptodate(vmpage)) {
 		CDEBUG(D_READA, "page index %lu, max_index: %lu\n",
-		       ccc_index(cp), *max_index);
-		if (*max_index == 0 || ccc_index(cp) > *max_index)
+		       vvp_index(vpg), *max_index);
+		if (*max_index == 0 || vvp_index(vpg) > *max_index)
 			rc = cl_page_is_under_lock(env, io, page, max_index);
 		if (rc == 0) {
-			cp->cpg_defer_uptodate = 1;
-			cp->cpg_ra_used = 0;
+			vpg->vpg_defer_uptodate = 1;
+			vpg->vpg_ra_used = 0;
 			cl_page_list_add(queue, page);
 			rc = 1;
 		} else {
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c
index ec114bc..bb85629 100644
--- a/drivers/staging/lustre/lustre/llite/rw26.c
+++ b/drivers/staging/lustre/lustre/llite/rw26.c
@@ -457,8 +457,8 @@ static int ll_prepare_partial_page(const struct lu_env *env, struct cl_io *io,
 {
 	struct cl_attr *attr   = ccc_env_thread_attr(env);
 	struct cl_object *obj  = io->ci_obj;
-	struct ccc_page *cp    = cl_object_page_slice(obj, pg);
-	loff_t          offset = cl_offset(obj, ccc_index(cp));
+	struct vvp_page *vpg   = cl_object_page_slice(obj, pg);
+	loff_t          offset = cl_offset(obj, vvp_index(vpg));
 	int             result;
 
 	cl_object_attr_lock(obj);
@@ -471,12 +471,12 @@ static int ll_prepare_partial_page(const struct lu_env *env, struct cl_io *io,
 		 * purposes here we can treat it like i_size.
 		 */
 		if (attr->cat_kms <= offset) {
-			char *kaddr = kmap_atomic(cp->cpg_page);
+			char *kaddr = kmap_atomic(vpg->vpg_page);
 
 			memset(kaddr, 0, cl_page_size(obj));
 			kunmap_atomic(kaddr);
-		} else if (cp->cpg_defer_uptodate) {
-			cp->cpg_ra_used = 1;
+		} else if (vpg->vpg_defer_uptodate) {
+			vpg->vpg_ra_used = 1;
 		} else {
 			result = ll_page_sync_io(env, io, pg, CRT_READ);
 		}
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c
index 45c549c..3891b0d 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_dev.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c
@@ -474,18 +474,18 @@ static loff_t vvp_pgcache_find(const struct lu_env *env,
 static void vvp_pgcache_page_show(const struct lu_env *env,
 				  struct seq_file *seq, struct cl_page *page)
 {
-	struct ccc_page *cpg;
+	struct vvp_page *vpg;
 	struct page      *vmpage;
 	int	      has_flags;
 
-	cpg = cl2ccc_page(cl_page_at(page, &vvp_device_type));
-	vmpage = cpg->cpg_page;
+	vpg = cl2vvp_page(cl_page_at(page, &vvp_device_type));
+	vmpage = vpg->vpg_page;
 	seq_printf(seq, " %5i | %p %p %s %s %s %s | %p %lu/%u(%p) %lu %u [",
 		   0 /* gen */,
-		   cpg, page,
+		   vpg, page,
 		   "none",
-		   cpg->cpg_write_queued ? "wq" : "- ",
-		   cpg->cpg_defer_uptodate ? "du" : "- ",
+		   vpg->vpg_write_queued ? "wq" : "- ",
+		   vpg->vpg_defer_uptodate ? "du" : "- ",
 		   PageWriteback(vmpage) ? "wb" : "-",
 		   vmpage, vmpage->mapping->host->i_ino,
 		   vmpage->mapping->host->i_generation,
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index 76e7b4c..4991ce7 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -204,7 +204,7 @@ struct vvp_object {
 	 * A list of dirty pages pending IO in the cache. Used by
 	 * SOM. Protected by ll_inode_info::lli_lock.
 	 *
-	 * \see ccc_page::cpg_pending_linkage
+	 * \see vvp_page::vpg_pending_linkage
 	 */
 	struct list_head	vob_pending_list;
 
@@ -235,36 +235,34 @@ struct vvp_object {
 };
 
 /**
- * ccc-private page state.
+ * VVP-private page state.
  */
-struct ccc_page {
-	struct cl_page_slice cpg_cl;
-	int		  cpg_defer_uptodate;
-	int		  cpg_ra_used;
-	int		  cpg_write_queued;
+struct vvp_page {
+	struct cl_page_slice vpg_cl;
+	int		  vpg_defer_uptodate;
+	int		  vpg_ra_used;
+	int		  vpg_write_queued;
 	/**
 	 * Non-empty iff this page is already counted in
 	 * vvp_object::vob_pending_list. This list is only used as a flag,
 	 * that is, never iterated through, only checked for list_empty(), but
 	 * having a list is useful for debugging.
 	 */
-	struct list_head	   cpg_pending_linkage;
+	struct list_head	   vpg_pending_linkage;
 	/** VM page */
-	struct page	  *cpg_page;
+	struct page	  *vpg_page;
 };
 
-static inline struct ccc_page *cl2ccc_page(const struct cl_page_slice *slice)
+static inline struct vvp_page *cl2vvp_page(const struct cl_page_slice *slice)
 {
-	return container_of(slice, struct ccc_page, cpg_cl);
+	return container_of(slice, struct vvp_page, vpg_cl);
 }
 
-static inline pgoff_t ccc_index(struct ccc_page *ccc)
+static inline pgoff_t vvp_index(struct vvp_page *vvp)
 {
-	return ccc->cpg_cl.cpl_index;
+	return vvp->vpg_cl.cpl_index;
 }
 
-struct cl_page *ccc_vmpage_page_transient(struct page *vmpage);
-
 struct vvp_device {
 	struct cl_device    vdv_cl;
 	struct super_block *vdv_sb;
@@ -296,10 +294,6 @@ void ccc_global_fini(struct lu_device_type *device_type);
 int ccc_lock_init(const struct lu_env *env, struct cl_object *obj,
 		  struct cl_lock *lock, const struct cl_io *io,
 		  const struct cl_lock_operations *lkops);
-int ccc_fail(const struct lu_env *env, const struct cl_page_slice *slice);
-int ccc_transient_page_prep(const struct lu_env *env,
-			    const struct cl_page_slice *slice,
-			    struct cl_io *io);
 void ccc_lock_delete(const struct lu_env *env,
 		     const struct cl_lock_slice *slice);
 void ccc_lock_fini(const struct lu_env *env, struct cl_lock_slice *slice);
@@ -360,11 +354,15 @@ static inline struct inode *vvp_object_inode(const struct cl_object *obj)
 int vvp_object_invariant(const struct cl_object *obj);
 struct vvp_object *cl_inode2vvp(struct inode *inode);
 
+static inline struct page *cl2vm_page(const struct cl_page_slice *slice)
+{
+	return cl2vvp_page(slice)->vpg_page;
+}
+
 struct ccc_lock *cl2ccc_lock(const struct cl_lock_slice *slice);
 struct ccc_io *cl2ccc_io(const struct lu_env *env,
 			 const struct cl_io_slice *slice);
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice);
-struct page *cl2vm_page(const struct cl_page_slice *slice);
 
 int cl_setattr_ost(struct inode *inode, const struct iattr *attr);
 
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index 1773cb2..eb6ce1c 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -645,15 +645,15 @@ static int vvp_io_commit_sync(const struct lu_env *env, struct cl_io *io,
 static void write_commit_callback(const struct lu_env *env, struct cl_io *io,
 				  struct cl_page *page)
 {
-	struct ccc_page *cp;
+	struct vvp_page *vpg;
 	struct page *vmpage = page->cp_vmpage;
 	struct cl_object *clob = cl_io_top(io)->ci_obj;
 
 	SetPageUptodate(vmpage);
 	set_page_dirty(vmpage);
 
-	cp = cl2ccc_page(cl_object_page_slice(clob, page));
-	vvp_write_pending(cl2vvp(clob), cp);
+	vpg = cl2vvp_page(cl_object_page_slice(clob, page));
+	vvp_write_pending(cl2vvp(clob), vpg);
 
 	cl_page_disown(env, io, page);
 
@@ -670,15 +670,15 @@ static bool page_list_sanity_check(struct cl_object *obj,
 	pgoff_t index = CL_PAGE_EOF;
 
 	cl_page_list_for_each(page, plist) {
-		struct ccc_page *cp = cl_object_page_slice(obj, page);
+		struct vvp_page *vpg = cl_object_page_slice(obj, page);
 
 		if (index == CL_PAGE_EOF) {
-			index = ccc_index(cp);
+			index = vvp_index(vpg);
 			continue;
 		}
 
 		++index;
-		if (index == ccc_index(cp))
+		if (index == vvp_index(vpg))
 			continue;
 
 		return false;
@@ -868,13 +868,13 @@ static int vvp_io_kernel_fault(struct vvp_fault_io *cfio)
 static void mkwrite_commit_callback(const struct lu_env *env, struct cl_io *io,
 				    struct cl_page *page)
 {
-	struct ccc_page *cp;
+	struct vvp_page *vpg;
 	struct cl_object *clob = cl_io_top(io)->ci_obj;
 
 	set_page_dirty(page->cp_vmpage);
 
-	cp = cl2ccc_page(cl_object_page_slice(clob, page));
-	vvp_write_pending(cl2vvp(clob), cp);
+	vpg = cl2vvp_page(cl_object_page_slice(clob, page));
+	vvp_write_pending(cl2vvp(clob), vpg);
 }
 
 static int vvp_io_fault_start(const struct lu_env *env,
@@ -979,7 +979,7 @@ static int vvp_io_fault_start(const struct lu_env *env,
 		wait_on_page_writeback(vmpage);
 		if (!PageDirty(vmpage)) {
 			struct cl_page_list *plist = &io->ci_queue.c2_qin;
-			struct ccc_page *cp = cl_object_page_slice(obj, page);
+			struct vvp_page *vpg = cl_object_page_slice(obj, page);
 			int to = PAGE_SIZE;
 
 			/* vvp_page_assume() calls wait_on_page_writeback(). */
@@ -989,7 +989,7 @@ static int vvp_io_fault_start(const struct lu_env *env,
 			cl_page_list_add(plist, page);
 
 			/* size fixup */
-			if (last_index == ccc_index(cp))
+			if (last_index == vvp_index(vpg))
 				to = size & ~PAGE_MASK;
 
 			/* Do not set Dirty bit here so that in case IO is
@@ -1058,7 +1058,7 @@ static int vvp_io_read_page(const struct lu_env *env,
 			    const struct cl_page_slice *slice)
 {
 	struct cl_io	      *io     = ios->cis_io;
-	struct ccc_page	   *cp     = cl2ccc_page(slice);
+	struct vvp_page           *vpg    = cl2vvp_page(slice);
 	struct cl_page	    *page   = slice->cpl_page;
 	struct inode              *inode  = vvp_object_inode(slice->cpl_obj);
 	struct ll_sb_info	 *sbi    = ll_i2sbi(inode);
@@ -1068,11 +1068,11 @@ static int vvp_io_read_page(const struct lu_env *env,
 
 	if (sbi->ll_ra_info.ra_max_pages_per_file &&
 	    sbi->ll_ra_info.ra_max_pages)
-		ras_update(sbi, inode, ras, ccc_index(cp),
-			   cp->cpg_defer_uptodate);
+		ras_update(sbi, inode, ras, vvp_index(vpg),
+			   vpg->vpg_defer_uptodate);
 
-	if (cp->cpg_defer_uptodate) {
-		cp->cpg_ra_used = 1;
+	if (vpg->vpg_defer_uptodate) {
+		vpg->vpg_ra_used = 1;
 		cl_page_export(env, page, 1);
 	}
 	/*
@@ -1084,7 +1084,7 @@ static int vvp_io_read_page(const struct lu_env *env,
 	if (sbi->ll_ra_info.ra_max_pages_per_file &&
 	    sbi->ll_ra_info.ra_max_pages)
 		ll_readahead(env, io, &queue->c2_qin, ras,
-			     cp->cpg_defer_uptodate);
+			     vpg->vpg_defer_uptodate);
 
 	return 0;
 }
diff --git a/drivers/staging/lustre/lustre/llite/vvp_object.c b/drivers/staging/lustre/lustre/llite/vvp_object.c
index 9f5e6a6..18c9df7 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_object.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_object.c
@@ -226,7 +226,7 @@ static int vvp_object_init0(const struct lu_env *env,
 {
 	vob->vob_inode = conf->coc_inode;
 	vob->vob_transient_pages = 0;
-	cl_object_page_init(&vob->vob_cl, sizeof(struct ccc_page));
+	cl_object_page_init(&vob->vob_cl, sizeof(struct vvp_page));
 	return 0;
 }
 
diff --git a/drivers/staging/lustre/lustre/llite/vvp_page.c b/drivers/staging/lustre/lustre/llite/vvp_page.c
index 419a535..5ebbe27 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_page.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_page.c
@@ -41,7 +41,13 @@
 
 #define DEBUG_SUBSYSTEM S_LLITE
 
-#include "../include/obd.h"
+#include <linux/atomic.h>
+#include <linux/bitops.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <linux/page-flags.h>
+#include <linux/pagemap.h>
+
 #include "../include/lustre_lite.h"
 
 #include "llite_internal.h"
@@ -53,9 +59,9 @@
  *
  */
 
-static void vvp_page_fini_common(struct ccc_page *cp)
+static void vvp_page_fini_common(struct vvp_page *vpg)
 {
-	struct page *vmpage = cp->cpg_page;
+	struct page *vmpage = vpg->vpg_page;
 
 	LASSERT(vmpage);
 	page_cache_release(vmpage);
@@ -64,23 +70,23 @@ static void vvp_page_fini_common(struct ccc_page *cp)
 static void vvp_page_fini(const struct lu_env *env,
 			  struct cl_page_slice *slice)
 {
-	struct ccc_page *cp = cl2ccc_page(slice);
-	struct page *vmpage  = cp->cpg_page;
+	struct vvp_page *vpg     = cl2vvp_page(slice);
+	struct page     *vmpage  = vpg->vpg_page;
 
 	/*
 	 * vmpage->private was already cleared when page was moved into
 	 * VPG_FREEING state.
 	 */
 	LASSERT((struct cl_page *)vmpage->private != slice->cpl_page);
-	vvp_page_fini_common(cp);
+	vvp_page_fini_common(vpg);
 }
 
 static int vvp_page_own(const struct lu_env *env,
 			const struct cl_page_slice *slice, struct cl_io *io,
 			int nonblock)
 {
-	struct ccc_page *vpg    = cl2ccc_page(slice);
-	struct page      *vmpage = vpg->cpg_page;
+	struct vvp_page *vpg    = cl2vvp_page(slice);
+	struct page     *vmpage = vpg->vpg_page;
 
 	LASSERT(vmpage);
 	if (nonblock) {
@@ -97,6 +103,7 @@ static int vvp_page_own(const struct lu_env *env,
 
 	lock_page(vmpage);
 	wait_on_page_writeback(vmpage);
+
 	return 0;
 }
 
@@ -137,12 +144,12 @@ static void vvp_page_discard(const struct lu_env *env,
 			     struct cl_io *unused)
 {
 	struct page	   *vmpage  = cl2vm_page(slice);
-	struct ccc_page      *cpg     = cl2ccc_page(slice);
+	struct vvp_page      *vpg     = cl2vvp_page(slice);
 
 	LASSERT(vmpage);
 	LASSERT(PageLocked(vmpage));
 
-	if (cpg->cpg_defer_uptodate && !cpg->cpg_ra_used)
+	if (vpg->vpg_defer_uptodate && !vpg->vpg_ra_used)
 		ll_ra_stats_inc(vmpage->mapping->host, RA_STAT_DISCARDED);
 
 	ll_invalidate_page(vmpage);
@@ -161,7 +168,7 @@ static void vvp_page_delete(const struct lu_env *env,
 	LASSERT((struct cl_page *)vmpage->private == page);
 	LASSERT(inode == vvp_object_inode(obj));
 
-	vvp_write_complete(cl2vvp(obj), cl2ccc_page(slice));
+	vvp_write_complete(cl2vvp(obj), cl2vvp_page(slice));
 
 	/* Drop the reference count held in vvp_page_init */
 	refc = atomic_dec_return(&page->cp_ref);
@@ -220,7 +227,7 @@ static int vvp_page_prep_write(const struct lu_env *env,
 	if (!pg->cp_sync_io)
 		set_page_writeback(vmpage);
 
-	vvp_write_pending(cl2vvp(slice->cpl_obj), cl2ccc_page(slice));
+	vvp_write_pending(cl2vvp(slice->cpl_obj), cl2vvp_page(slice));
 
 	return 0;
 }
@@ -257,22 +264,23 @@ static void vvp_page_completion_read(const struct lu_env *env,
 				     const struct cl_page_slice *slice,
 				     int ioret)
 {
-	struct ccc_page *cp     = cl2ccc_page(slice);
-	struct page      *vmpage = cp->cpg_page;
+	struct vvp_page *vpg    = cl2vvp_page(slice);
+	struct page     *vmpage = vpg->vpg_page;
 	struct cl_page  *page   = slice->cpl_page;
 	struct inode    *inode  = vvp_object_inode(page->cp_obj);
 
 	LASSERT(PageLocked(vmpage));
 	CL_PAGE_HEADER(D_PAGE, env, page, "completing READ with %d\n", ioret);
 
-	if (cp->cpg_defer_uptodate)
+	if (vpg->vpg_defer_uptodate)
 		ll_ra_count_put(ll_i2sbi(inode), 1);
 
 	if (ioret == 0)  {
-		if (!cp->cpg_defer_uptodate)
+		if (!vpg->vpg_defer_uptodate)
 			cl_page_export(env, page, 1);
-	} else
-		cp->cpg_defer_uptodate = 0;
+	} else {
+		vpg->vpg_defer_uptodate = 0;
+	}
 
 	if (!page->cp_sync_io)
 		unlock_page(vmpage);
@@ -282,9 +290,9 @@ static void vvp_page_completion_write(const struct lu_env *env,
 				      const struct cl_page_slice *slice,
 				      int ioret)
 {
-	struct ccc_page *cp     = cl2ccc_page(slice);
+	struct vvp_page *vpg     = cl2vvp_page(slice);
 	struct cl_page  *pg     = slice->cpl_page;
-	struct page      *vmpage = cp->cpg_page;
+	struct page     *vmpage = vpg->vpg_page;
 
 	CL_PAGE_HEADER(D_PAGE, env, pg, "completing WRITE with %d\n", ioret);
 
@@ -298,8 +306,8 @@ static void vvp_page_completion_write(const struct lu_env *env,
 	 * and then re-add the page into pending transfer queue.  -jay
 	 */
 
-	cp->cpg_write_queued = 0;
-	vvp_write_complete(cl2vvp(slice->cpl_obj), cp);
+	vpg->vpg_write_queued = 0;
+	vvp_write_complete(cl2vvp(slice->cpl_obj), vpg);
 
 	if (pg->cp_sync_io) {
 		LASSERT(PageLocked(vmpage));
@@ -342,7 +350,7 @@ static int vvp_page_make_ready(const struct lu_env *env,
 		LASSERT(pg->cp_state == CPS_CACHED);
 		/* This actually clears the dirty bit in the radix tree. */
 		set_page_writeback(vmpage);
-		vvp_write_pending(cl2vvp(slice->cpl_obj), cl2ccc_page(slice));
+		vvp_write_pending(cl2vvp(slice->cpl_obj), cl2vvp_page(slice));
 		CL_PAGE_HEADER(D_PAGE, env, pg, "readied\n");
 	} else if (pg->cp_state == CPS_PAGEOUT) {
 		/* is it possible for osc_flush_async_page() to already
@@ -376,12 +384,12 @@ static int vvp_page_print(const struct lu_env *env,
 			  const struct cl_page_slice *slice,
 			  void *cookie, lu_printer_t printer)
 {
-	struct ccc_page *vp = cl2ccc_page(slice);
-	struct page      *vmpage = vp->cpg_page;
+	struct vvp_page *vpg = cl2vvp_page(slice);
+	struct page     *vmpage = vpg->vpg_page;
 
 	(*printer)(env, cookie, LUSTRE_VVP_NAME "-page@%p(%d:%d:%d) vm@%p ",
-		   vp, vp->cpg_defer_uptodate, vp->cpg_ra_used,
-		   vp->cpg_write_queued, vmpage);
+		   vpg, vpg->vpg_defer_uptodate, vpg->vpg_ra_used,
+		   vpg->vpg_write_queued, vmpage);
 	if (vmpage) {
 		(*printer)(env, cookie, "%lx %d:%d %lx %lu %slru",
 			   (long)vmpage->flags, page_count(vmpage),
@@ -389,7 +397,20 @@ static int vvp_page_print(const struct lu_env *env,
 			   page_index(vmpage),
 			   list_empty(&vmpage->lru) ? "not-" : "");
 	}
+
 	(*printer)(env, cookie, "\n");
+
+	return 0;
+}
+
+static int vvp_page_fail(const struct lu_env *env,
+			 const struct cl_page_slice *slice)
+{
+	/*
+	 * Cached read?
+	 */
+	LBUG();
+
 	return 0;
 }
 
@@ -409,16 +430,24 @@ static const struct cl_page_operations vvp_page_ops = {
 		[CRT_READ] = {
 			.cpo_prep	= vvp_page_prep_read,
 			.cpo_completion  = vvp_page_completion_read,
-			.cpo_make_ready  = ccc_fail,
+			.cpo_make_ready = vvp_page_fail,
 		},
 		[CRT_WRITE] = {
 			.cpo_prep	= vvp_page_prep_write,
 			.cpo_completion  = vvp_page_completion_write,
 			.cpo_make_ready  = vvp_page_make_ready,
-		}
-	}
+		},
+	},
 };
 
+static int vvp_transient_page_prep(const struct lu_env *env,
+				   const struct cl_page_slice *slice,
+				   struct cl_io *unused)
+{
+	/* transient page should always be sent. */
+	return 0;
+}
+
 static void vvp_transient_page_verify(const struct cl_page *page)
 {
 	struct inode *inode = vvp_object_inode(page->cp_obj);
@@ -492,11 +521,11 @@ vvp_transient_page_completion(const struct lu_env *env,
 static void vvp_transient_page_fini(const struct lu_env *env,
 				    struct cl_page_slice *slice)
 {
-	struct ccc_page *cp = cl2ccc_page(slice);
+	struct vvp_page *vpg = cl2vvp_page(slice);
 	struct cl_page *clp = slice->cpl_page;
 	struct vvp_object *clobj = cl2vvp(clp->cp_obj);
 
-	vvp_page_fini_common(cp);
+	vvp_page_fini_common(vpg);
 	LASSERT(!inode_trylock(clobj->vob_inode));
 	clobj->vob_transient_pages--;
 }
@@ -513,11 +542,11 @@ static const struct cl_page_operations vvp_transient_page_ops = {
 	.cpo_is_under_lock	= vvp_page_is_under_lock,
 	.io = {
 		[CRT_READ] = {
-			.cpo_prep	= ccc_transient_page_prep,
+			.cpo_prep	= vvp_transient_page_prep,
 			.cpo_completion  = vvp_transient_page_completion,
 		},
 		[CRT_WRITE] = {
-			.cpo_prep	= ccc_transient_page_prep,
+			.cpo_prep	= vvp_transient_page_prep,
 			.cpo_completion  = vvp_transient_page_completion,
 		}
 	}
@@ -526,27 +555,27 @@ static const struct cl_page_operations vvp_transient_page_ops = {
 int vvp_page_init(const struct lu_env *env, struct cl_object *obj,
 		struct cl_page *page, pgoff_t index)
 {
-	struct ccc_page *cpg = cl_object_page_slice(obj, page);
+	struct vvp_page *vpg = cl_object_page_slice(obj, page);
 	struct page     *vmpage = page->cp_vmpage;
 
 	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
 
-	cpg->cpg_page = vmpage;
+	vpg->vpg_page = vmpage;
 	page_cache_get(vmpage);
 
-	INIT_LIST_HEAD(&cpg->cpg_pending_linkage);
+	INIT_LIST_HEAD(&vpg->vpg_pending_linkage);
 	if (page->cp_type == CPT_CACHEABLE) {
 		/* in cache, decref in vvp_page_delete */
 		atomic_inc(&page->cp_ref);
 		SetPagePrivate(vmpage);
 		vmpage->private = (unsigned long)page;
-		cl_page_slice_add(page, &cpg->cpg_cl, obj, index,
+		cl_page_slice_add(page, &vpg->vpg_cl, obj, index,
 				  &vvp_page_ops);
 	} else {
 		struct vvp_object *clobj = cl2vvp(obj);
 
 		LASSERT(!inode_trylock(clobj->vob_inode));
-		cl_page_slice_add(page, &cpg->cpg_cl, obj, index,
+		cl_page_slice_add(page, &vpg->vpg_cl, obj, index,
 				  &vvp_transient_page_ops);
 		clobj->vob_transient_pages++;
 	}
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367441 — [PATCH 41/43] staging/lustre/ldlm: ELC picks locks in a safer policy

From: Jinshan Xiong <jinshan.xiong@intel.com>

Change the policy of ELC to pick locks that have no dirty pages,
no page in writeback state, and no locked pages.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/9175
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4300
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/include/lustre_dlm.h | 13 ++++++----
 drivers/staging/lustre/lustre/ldlm/ldlm_request.c  | 28 +++++++++++++++-------
 drivers/staging/lustre/lustre/mdc/mdc_request.c    |  4 ++--
 drivers/staging/lustre/lustre/osc/osc_lock.c       |  4 +++-
 drivers/staging/lustre/lustre/osc/osc_request.c    | 19 ++++++---------
 5 files changed, 39 insertions(+), 29 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/lustre_dlm.h b/drivers/staging/lustre/lustre/include/lustre_dlm.h
index b1abdc2..9cade14 100644
--- a/drivers/staging/lustre/lustre/include/lustre_dlm.h
+++ b/drivers/staging/lustre/lustre/include/lustre_dlm.h
@@ -270,7 +270,7 @@ struct ldlm_pool {
 	struct completion	 pl_kobj_unregister;
 };
 
-typedef int (*ldlm_cancel_for_recovery)(struct ldlm_lock *lock);
+typedef int (*ldlm_cancel_cbt)(struct ldlm_lock *lock);
 
 /**
  * LVB operations.
@@ -447,8 +447,11 @@ struct ldlm_namespace {
 	/** Limit of parallel AST RPC count. */
 	unsigned		ns_max_parallel_ast;
 
-	/** Callback to cancel locks before replaying it during recovery. */
-	ldlm_cancel_for_recovery ns_cancel_for_recovery;
+	/**
+	 * Callback to check if a lock is good to be canceled by ELC or
+	 * during recovery.
+	 */
+	ldlm_cancel_cbt		ns_cancel;
 
 	/** LDLM lock stats */
 	struct lprocfs_stats	*ns_stats;
@@ -480,9 +483,9 @@ static inline int ns_connect_lru_resize(struct ldlm_namespace *ns)
 }
 
 static inline void ns_register_cancel(struct ldlm_namespace *ns,
-				      ldlm_cancel_for_recovery arg)
+				      ldlm_cancel_cbt arg)
 {
-	ns->ns_cancel_for_recovery = arg;
+	ns->ns_cancel = arg;
 }
 
 struct ldlm_lock;
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
index 42925ac..2f12194 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
@@ -1137,7 +1137,6 @@ static ldlm_policy_res_t ldlm_cancel_no_wait_policy(struct ldlm_namespace *ns,
 						    int count)
 {
 	ldlm_policy_res_t result = LDLM_POLICY_CANCEL_LOCK;
-	ldlm_cancel_for_recovery cb = ns->ns_cancel_for_recovery;
 
 	/* don't check added & count since we want to process all locks
 	 * from unused list.
@@ -1147,7 +1146,7 @@ static ldlm_policy_res_t ldlm_cancel_no_wait_policy(struct ldlm_namespace *ns,
 	switch (lock->l_resource->lr_type) {
 	case LDLM_EXTENT:
 	case LDLM_IBITS:
-		if (cb && cb(lock))
+			if (ns->ns_cancel && ns->ns_cancel(lock) != 0)
 			break;
 	default:
 		result = LDLM_POLICY_SKIP_LOCK;
@@ -1197,8 +1196,13 @@ static ldlm_policy_res_t ldlm_cancel_lrur_policy(struct ldlm_namespace *ns,
 	/* Stop when SLV is not yet come from server or lv is smaller than
 	 * it is.
 	 */
-	return (slv == 0 || lv < slv) ?
-		LDLM_POLICY_KEEP_LOCK : LDLM_POLICY_CANCEL_LOCK;
+	if (slv == 0 || lv < slv)
+		return LDLM_POLICY_KEEP_LOCK;
+
+	if (ns->ns_cancel && ns->ns_cancel(lock) == 0)
+		return LDLM_POLICY_KEEP_LOCK;
+
+	return LDLM_POLICY_CANCEL_LOCK;
 }
 
 /**
@@ -1236,11 +1240,17 @@ static ldlm_policy_res_t ldlm_cancel_aged_policy(struct ldlm_namespace *ns,
 						 int unused, int added,
 						 int count)
 {
-	/* Stop LRU processing if young lock is found and we reach past count */
-	return ((added >= count) &&
-		time_before(cfs_time_current(),
-			    cfs_time_add(lock->l_last_used, ns->ns_max_age))) ?
-		LDLM_POLICY_KEEP_LOCK : LDLM_POLICY_CANCEL_LOCK;
+	if (added >= count)
+		return LDLM_POLICY_KEEP_LOCK;
+
+	if (time_before(cfs_time_current(),
+			cfs_time_add(lock->l_last_used, ns->ns_max_age)))
+		return LDLM_POLICY_KEEP_LOCK;
+
+	if (ns->ns_cancel && ns->ns_cancel(lock) == 0)
+		return LDLM_POLICY_KEEP_LOCK;
+
+	return LDLM_POLICY_CANCEL_LOCK;
 }
 
 /**
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
index 55dd8ef..98b27f1 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
@@ -2249,7 +2249,7 @@ static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
  * recovery, non zero value will be return if the lock can be canceled,
  * or zero returned for not
  */
-static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
+static int mdc_cancel_weight(struct ldlm_lock *lock)
 {
 	if (lock->l_resource->lr_type != LDLM_IBITS)
 		return 0;
@@ -2331,7 +2331,7 @@ static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 	sptlrpc_lprocfs_cliobd_attach(obd);
 	ptlrpc_lprocfs_register_obd(obd);
 
-	ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
+	ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
 
 	obd->obd_namespace->ns_lvbo = &inode_lvbo;
 
diff --git a/drivers/staging/lustre/lustre/osc/osc_lock.c b/drivers/staging/lustre/lustre/osc/osc_lock.c
index 68c5013..49dfe9f 100644
--- a/drivers/staging/lustre/lustre/osc/osc_lock.c
+++ b/drivers/staging/lustre/lustre/osc/osc_lock.c
@@ -635,7 +635,9 @@ static int weigh_cb(const struct lu_env *env, struct cl_io *io,
 {
 	struct cl_page *page = ops->ops_cl.cpl_page;
 
-	if (cl_page_is_vmlocked(env, page)) {
+	if (cl_page_is_vmlocked(env, page) ||
+	    PageDirty(page->cp_vmpage) || PageWriteback(page->cp_vmpage)
+	   ) {
 		(*(unsigned long *)cbdata)++;
 		return CLP_GANG_ABORT;
 	}
diff --git a/drivers/staging/lustre/lustre/osc/osc_request.c b/drivers/staging/lustre/lustre/osc/osc_request.c
index 368b997..a6dc517 100644
--- a/drivers/staging/lustre/lustre/osc/osc_request.c
+++ b/drivers/staging/lustre/lustre/osc/osc_request.c
@@ -2292,15 +2292,13 @@ no_match:
 	if (*flags & LDLM_FL_TEST_LOCK)
 		return -ENOLCK;
 	if (intent) {
-		LIST_HEAD(cancels);
-
 		req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 					   &RQF_LDLM_ENQUEUE_LVB);
 		if (!req)
 			return -ENOMEM;
 
-		rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
-		if (rc) {
+		rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_ENQUEUE);
+		if (rc < 0) {
 			ptlrpc_request_free(req);
 			return rc;
 		}
@@ -3110,17 +3108,14 @@ static int osc_import_event(struct obd_device *obd,
  * \retval zero the lock can't be canceled
  * \retval other ok to cancel
  */
-static int osc_cancel_for_recovery(struct ldlm_lock *lock)
+static int osc_cancel_weight(struct ldlm_lock *lock)
 {
 	/*
-	 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
-	 *
-	 * XXX as a future improvement, we can also cancel unused write lock
-	 * if it doesn't have dirty data and active mmaps.
+	 * Cancel all unused and granted extent lock.
 	 */
 	if (lock->l_resource->lr_type == LDLM_EXTENT &&
-	    (lock->l_granted_mode == LCK_PR ||
-	     lock->l_granted_mode == LCK_CR) && osc_ldlm_weigh_ast(lock) == 0)
+	    lock->l_granted_mode == lock->l_req_mode &&
+	    osc_ldlm_weigh_ast(lock) == 0)
 		return 1;
 
 	return 0;
@@ -3197,7 +3192,7 @@ int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 	}
 
 	INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
-	ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
+	ns_register_cancel(obd->obd_namespace, osc_cancel_weight);
 	return rc;
 
 out_ptlrpcd_work:
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

#1367442 — [PATCH 32/43] staging/lustre/llite: move vvp_io functions to vvp_io.c

From: "John L. Hammond" <john.hammond@intel.com>

Move all vvp_io related functions from lustre/llite/lcommon_cl.c to
the sole file where they are used lustre/llite/vvp_io.c.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13376
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 drivers/staging/lustre/lustre/llite/lcommon_cl.c   | 197 --------------------
 .../staging/lustre/lustre/llite/llite_internal.h   |   1 -
 drivers/staging/lustre/lustre/llite/vvp_internal.h |  22 +--
 drivers/staging/lustre/lustre/llite/vvp_io.c       | 198 ++++++++++++++++++++-
 4 files changed, 196 insertions(+), 222 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/lcommon_cl.c b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
index 630c371..1b11103 100644
--- a/drivers/staging/lustre/lustre/llite/lcommon_cl.c
+++ b/drivers/staging/lustre/lustre/llite/lcommon_cl.c
@@ -184,192 +184,6 @@ void ccc_global_fini(struct lu_device_type *device_type)
 	lu_kmem_fini(ccc_caches);
 }
 
-static void vvp_object_size_lock(struct cl_object *obj)
-{
-	struct inode *inode = vvp_object_inode(obj);
-
-	ll_inode_size_lock(inode);
-	cl_object_attr_lock(obj);
-}
-
-static void vvp_object_size_unlock(struct cl_object *obj)
-{
-	struct inode *inode = vvp_object_inode(obj);
-
-	cl_object_attr_unlock(obj);
-	ll_inode_size_unlock(inode);
-}
-
-/*****************************************************************************
- *
- * io operations.
- *
- */
-
-int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
-			  __u32 enqflags, enum cl_lock_mode mode,
-			  pgoff_t start, pgoff_t end)
-{
-	struct vvp_io          *vio   = vvp_env_io(env);
-	struct cl_lock_descr   *descr = &vio->vui_link.cill_descr;
-	struct cl_object       *obj   = io->ci_obj;
-
-	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
-
-	CDEBUG(D_VFSTRACE, "lock: %d [%lu, %lu]\n", mode, start, end);
-
-	memset(&vio->vui_link, 0, sizeof(vio->vui_link));
-
-	if (vio->vui_fd && (vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
-		descr->cld_mode = CLM_GROUP;
-		descr->cld_gid  = vio->vui_fd->fd_grouplock.cg_gid;
-	} else {
-		descr->cld_mode  = mode;
-	}
-	descr->cld_obj   = obj;
-	descr->cld_start = start;
-	descr->cld_end   = end;
-	descr->cld_enq_flags = enqflags;
-
-	cl_io_lock_add(env, io, &vio->vui_link);
-	return 0;
-}
-
-void vvp_io_update_iov(const struct lu_env *env,
-		       struct vvp_io *vio, struct cl_io *io)
-{
-	size_t size = io->u.ci_rw.crw_count;
-
-	if (!cl_is_normalio(env, io) || !vio->vui_iter)
-		return;
-
-	iov_iter_truncate(vio->vui_iter, size);
-}
-
-int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
-		    __u32 enqflags, enum cl_lock_mode mode,
-		    loff_t start, loff_t end)
-{
-	struct cl_object *obj = io->ci_obj;
-
-	return vvp_io_one_lock_index(env, io, enqflags, mode,
-				     cl_index(obj, start), cl_index(obj, end));
-}
-
-void vvp_io_end(const struct lu_env *env, const struct cl_io_slice *ios)
-{
-	CLOBINVRNT(env, ios->cis_io->ci_obj,
-		   vvp_object_invariant(ios->cis_io->ci_obj));
-}
-
-void vvp_io_advance(const struct lu_env *env,
-		    const struct cl_io_slice *ios,
-		    size_t nob)
-{
-	struct vvp_io    *vio = cl2vvp_io(env, ios);
-	struct cl_io     *io  = ios->cis_io;
-	struct cl_object *obj = ios->cis_io->ci_obj;
-
-	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
-
-	if (!cl_is_normalio(env, io))
-		return;
-
-	iov_iter_reexpand(vio->vui_iter, vio->vui_tot_count  -= nob);
-}
-
-/**
- * Helper function that if necessary adjusts file size (inode->i_size), when
- * position at the offset \a pos is accessed. File size can be arbitrary stale
- * on a Lustre client, but client at least knows KMS. If accessed area is
- * inside [0, KMS], set file size to KMS, otherwise glimpse file size.
- *
- * Locking: cl_isize_lock is used to serialize changes to inode size and to
- * protect consistency between inode size and cl_object
- * attributes. cl_object_size_lock() protects consistency between cl_attr's of
- * top-object and sub-objects.
- */
-int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
-		  struct cl_io *io, loff_t start, size_t count, int *exceed)
-{
-	struct cl_attr *attr  = ccc_env_thread_attr(env);
-	struct inode   *inode = vvp_object_inode(obj);
-	loff_t	  pos   = start + count - 1;
-	loff_t kms;
-	int result;
-
-	/*
-	 * Consistency guarantees: following possibilities exist for the
-	 * relation between region being accessed and real file size at this
-	 * moment:
-	 *
-	 *  (A): the region is completely inside of the file;
-	 *
-	 *  (B-x): x bytes of region are inside of the file, the rest is
-	 *  outside;
-	 *
-	 *  (C): the region is completely outside of the file.
-	 *
-	 * This classification is stable under DLM lock already acquired by
-	 * the caller, because to change the class, other client has to take
-	 * DLM lock conflicting with our lock. Also, any updates to ->i_size
-	 * by other threads on this client are serialized by
-	 * ll_inode_size_lock(). This guarantees that short reads are handled
-	 * correctly in the face of concurrent writes and truncates.
-	 */
-	vvp_object_size_lock(obj);
-	result = cl_object_attr_get(env, obj, attr);
-	if (result == 0) {
-		kms = attr->cat_kms;
-		if (pos > kms) {
-			/*
-			 * A glimpse is necessary to determine whether we
-			 * return a short read (B) or some zeroes at the end
-			 * of the buffer (C)
-			 */
-			vvp_object_size_unlock(obj);
-			result = cl_glimpse_lock(env, io, inode, obj, 0);
-			if (result == 0 && exceed) {
-				/* If objective page index exceed end-of-file
-				 * page index, return directly. Do not expect
-				 * kernel will check such case correctly.
-				 * linux-2.6.18-128.1.1 miss to do that.
-				 * --bug 17336
-				 */
-				loff_t size = i_size_read(inode);
-				loff_t cur_index = start >> PAGE_CACHE_SHIFT;
-				loff_t size_index = (size - 1) >>
-						    PAGE_CACHE_SHIFT;
-
-				if ((size == 0 && cur_index != 0) ||
-				    size_index < cur_index)
-					*exceed = 1;
-			}
-			return result;
-		}
-		/*
-		 * region is within kms and, hence, within real file
-		 * size (A). We need to increase i_size to cover the
-		 * read region so that generic_file_read() will do its
-		 * job, but that doesn't mean the kms size is
-		 * _correct_, it is only the _minimum_ size. If
-		 * someone does a stat they will get the correct size
-		 * which will always be >= the kms value here.
-		 * b=11081
-		 */
-		if (i_size_read(inode) < kms) {
-			i_size_write(inode, kms);
-			CDEBUG(D_VFSTRACE, DFID " updating i_size %llu\n",
-			       PFID(lu_object_fid(&obj->co_lu)),
-			       (__u64)i_size_read(inode));
-		}
-	}
-
-	vvp_object_size_unlock(obj);
-
-	return result;
-}
-
 /*****************************************************************************
  *
  * Transfer operations.
@@ -493,17 +307,6 @@ again:
  *
  */
 
-struct vvp_io *cl2vvp_io(const struct lu_env *env,
-			 const struct cl_io_slice *slice)
-{
-	struct vvp_io *vio;
-
-	vio = container_of(slice, struct vvp_io, vui_cl);
-	LASSERT(vio == vvp_env_io(env));
-
-	return vio;
-}
-
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice)
 {
 	return container_of0(slice, struct ccc_req, crq_cl);
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 9856bb6..86e93c0 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -693,7 +693,6 @@ void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
 int ll_readahead(const struct lu_env *env, struct cl_io *io,
 		 struct cl_page_list *queue, struct ll_readahead_state *ras,
 		 bool hit);
-int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io);
 struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage);
 void ll_cl_fini(struct ll_cl_context *lcc);
 
diff --git a/drivers/staging/lustre/lustre/llite/vvp_internal.h b/drivers/staging/lustre/lustre/llite/vvp_internal.h
index e04f23e..7af8c44 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_internal.h
+++ b/drivers/staging/lustre/lustre/llite/vvp_internal.h
@@ -164,12 +164,6 @@ struct vvp_io {
 	bool		vui_ra_valid;
 };
 
-/**
- * True, if \a io is a normal io, False for other splice_{read,write}.
- * must be implemented in arch specific code.
- */
-int cl_is_normalio(const struct lu_env *env, const struct cl_io *io);
-
 extern struct lu_context_key ccc_key;
 extern struct lu_context_key vvp_session_key;
 
@@ -334,19 +328,6 @@ void ccc_umount(const struct lu_env *env, struct cl_device *dev);
 int ccc_global_init(struct lu_device_type *device_type);
 void ccc_global_fini(struct lu_device_type *device_type);
 
-int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
-			  __u32 enqflags, enum cl_lock_mode mode,
-			  pgoff_t start, pgoff_t end);
-int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
-		    __u32 enqflags, enum cl_lock_mode mode,
-		    loff_t start, loff_t end);
-void vvp_io_end(const struct lu_env *env, const struct cl_io_slice *ios);
-void vvp_io_advance(const struct lu_env *env, const struct cl_io_slice *ios,
-		    size_t nob);
-void vvp_io_update_iov(const struct lu_env *env, struct vvp_io *cio,
-		       struct cl_io *io);
-int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
-		  struct cl_io *io, loff_t start, size_t count, int *exceed);
 void ccc_req_completion(const struct lu_env *env,
 			const struct cl_req_slice *slice, int ioret);
 void ccc_req_attr_set(const struct lu_env *env,
@@ -397,8 +378,6 @@ static inline struct vvp_lock *cl2vvp_lock(const struct cl_lock_slice *slice)
 	return container_of(slice, struct vvp_lock, vlk_cl);
 }
 
-struct vvp_io *cl2vvp_io(const struct lu_env *env,
-			 const struct cl_io_slice *slice);
 struct ccc_req *cl2ccc_req(const struct cl_req_slice *slice);
 
 int cl_setattr_ost(struct inode *inode, const struct iattr *attr);
@@ -447,6 +426,7 @@ void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm);
 
 int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
 		struct cl_io *io);
+int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io);
 int vvp_lock_init(const struct lu_env *env, struct cl_object *obj,
 		  struct cl_lock *lock, const struct cl_io *io);
 int vvp_page_init(const struct lu_env *env, struct cl_object *obj,
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index 53cf2be..48b0693 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -47,10 +47,21 @@
 #include "llite_internal.h"
 #include "vvp_internal.h"
 
+struct vvp_io *cl2vvp_io(const struct lu_env *env,
+			 const struct cl_io_slice *slice)
+{
+	struct vvp_io *vio;
+
+	vio = container_of(slice, struct vvp_io, vui_cl);
+	LASSERT(vio == vvp_env_io(env));
+
+	return vio;
+}
+
 /**
  * True, if \a io is a normal io, False for splice_{read,write}
  */
-int cl_is_normalio(const struct lu_env *env, const struct cl_io *io)
+static int cl_is_normalio(const struct lu_env *env, const struct cl_io *io)
 {
 	struct vvp_io *vio = vvp_env_io(env);
 
@@ -93,12 +104,160 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io,
 	return rc;
 }
 
+static void vvp_object_size_lock(struct cl_object *obj)
+{
+	struct inode *inode = vvp_object_inode(obj);
+
+	ll_inode_size_lock(inode);
+	cl_object_attr_lock(obj);
+}
+
+static void vvp_object_size_unlock(struct cl_object *obj)
+{
+	struct inode *inode = vvp_object_inode(obj);
+
+	cl_object_attr_unlock(obj);
+	ll_inode_size_unlock(inode);
+}
+
+/**
+ * Helper function that if necessary adjusts file size (inode->i_size), when
+ * position at the offset \a pos is accessed. File size can be arbitrary stale
+ * on a Lustre client, but client at least knows KMS. If accessed area is
+ * inside [0, KMS], set file size to KMS, otherwise glimpse file size.
+ *
+ * Locking: cl_isize_lock is used to serialize changes to inode size and to
+ * protect consistency between inode size and cl_object
+ * attributes. cl_object_size_lock() protects consistency between cl_attr's of
+ * top-object and sub-objects.
+ */
+static int vvp_prep_size(const struct lu_env *env, struct cl_object *obj,
+			 struct cl_io *io, loff_t start, size_t count,
+			 int *exceed)
+{
+	struct cl_attr *attr  = ccc_env_thread_attr(env);
+	struct inode   *inode = vvp_object_inode(obj);
+	loff_t	  pos   = start + count - 1;
+	loff_t kms;
+	int result;
+
+	/*
+	 * Consistency guarantees: following possibilities exist for the
+	 * relation between region being accessed and real file size at this
+	 * moment:
+	 *
+	 *  (A): the region is completely inside of the file;
+	 *
+	 *  (B-x): x bytes of region are inside of the file, the rest is
+	 *  outside;
+	 *
+	 *  (C): the region is completely outside of the file.
+	 *
+	 * This classification is stable under DLM lock already acquired by
+	 * the caller, because to change the class, other client has to take
+	 * DLM lock conflicting with our lock. Also, any updates to ->i_size
+	 * by other threads on this client are serialized by
+	 * ll_inode_size_lock(). This guarantees that short reads are handled
+	 * correctly in the face of concurrent writes and truncates.
+	 */
+	vvp_object_size_lock(obj);
+	result = cl_object_attr_get(env, obj, attr);
+	if (result == 0) {
+		kms = attr->cat_kms;
+		if (pos > kms) {
+			/*
+			 * A glimpse is necessary to determine whether we
+			 * return a short read (B) or some zeroes at the end
+			 * of the buffer (C)
+			 */
+			vvp_object_size_unlock(obj);
+			result = cl_glimpse_lock(env, io, inode, obj, 0);
+			if (result == 0 && exceed) {
+				/* If objective page index exceed end-of-file
+				 * page index, return directly. Do not expect
+				 * kernel will check such case correctly.
+				 * linux-2.6.18-128.1.1 miss to do that.
+				 * --bug 17336
+				 */
+				loff_t size = i_size_read(inode);
+				loff_t cur_index = start >> PAGE_CACHE_SHIFT;
+				loff_t size_index = (size - 1) >>
+						    PAGE_CACHE_SHIFT;
+
+				if ((size == 0 && cur_index != 0) ||
+				    size_index < cur_index)
+					*exceed = 1;
+			}
+			return result;
+		}
+		/*
+		 * region is within kms and, hence, within real file
+		 * size (A). We need to increase i_size to cover the
+		 * read region so that generic_file_read() will do its
+		 * job, but that doesn't mean the kms size is
+		 * _correct_, it is only the _minimum_ size. If
+		 * someone does a stat they will get the correct size
+		 * which will always be >= the kms value here.
+		 * b=11081
+		 */
+		if (i_size_read(inode) < kms) {
+			i_size_write(inode, kms);
+			CDEBUG(D_VFSTRACE, DFID " updating i_size %llu\n",
+			       PFID(lu_object_fid(&obj->co_lu)),
+			       (__u64)i_size_read(inode));
+		}
+	}
+
+	vvp_object_size_unlock(obj);
+
+	return result;
+}
+
 /*****************************************************************************
  *
  * io operations.
  *
  */
 
+static int vvp_io_one_lock_index(const struct lu_env *env, struct cl_io *io,
+				 __u32 enqflags, enum cl_lock_mode mode,
+			  pgoff_t start, pgoff_t end)
+{
+	struct vvp_io          *vio   = vvp_env_io(env);
+	struct cl_lock_descr   *descr = &vio->vui_link.cill_descr;
+	struct cl_object       *obj   = io->ci_obj;
+
+	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
+
+	CDEBUG(D_VFSTRACE, "lock: %d [%lu, %lu]\n", mode, start, end);
+
+	memset(&vio->vui_link, 0, sizeof(vio->vui_link));
+
+	if (vio->vui_fd && (vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
+		descr->cld_mode = CLM_GROUP;
+		descr->cld_gid  = vio->vui_fd->fd_grouplock.cg_gid;
+	} else {
+		descr->cld_mode  = mode;
+	}
+	descr->cld_obj   = obj;
+	descr->cld_start = start;
+	descr->cld_end   = end;
+	descr->cld_enq_flags = enqflags;
+
+	cl_io_lock_add(env, io, &vio->vui_link);
+	return 0;
+}
+
+static int vvp_io_one_lock(const struct lu_env *env, struct cl_io *io,
+			   __u32 enqflags, enum cl_lock_mode mode,
+			   loff_t start, loff_t end)
+{
+	struct cl_object *obj = io->ci_obj;
+
+	return vvp_io_one_lock_index(env, io, enqflags, mode,
+				     cl_index(obj, start), cl_index(obj, end));
+}
+
 static int vvp_io_write_iter_init(const struct lu_env *env,
 				  const struct cl_io_slice *ios)
 {
@@ -303,6 +462,33 @@ static int vvp_mmap_locks(const struct lu_env *env,
 	return result;
 }
 
+static void vvp_io_advance(const struct lu_env *env,
+			   const struct cl_io_slice *ios,
+			   size_t nob)
+{
+	struct vvp_io    *vio = cl2vvp_io(env, ios);
+	struct cl_io     *io  = ios->cis_io;
+	struct cl_object *obj = ios->cis_io->ci_obj;
+
+	CLOBINVRNT(env, obj, vvp_object_invariant(obj));
+
+	if (!cl_is_normalio(env, io))
+		return;
+
+	iov_iter_reexpand(vio->vui_iter, vio->vui_tot_count  -= nob);
+}
+
+static void vvp_io_update_iov(const struct lu_env *env,
+			      struct vvp_io *vio, struct cl_io *io)
+{
+	size_t size = io->u.ci_rw.crw_count;
+
+	if (!cl_is_normalio(env, io) || !vio->vui_iter)
+		return;
+
+	iov_iter_truncate(vio->vui_iter, size);
+}
+
 static int vvp_io_rw_lock(const struct lu_env *env, struct cl_io *io,
 			  enum cl_lock_mode mode, loff_t start, loff_t end)
 {
@@ -514,7 +700,7 @@ static int vvp_io_read_start(const struct lu_env *env,
 	if (!can_populate_pages(env, io, inode))
 		return 0;
 
-	result = ccc_prep_size(env, obj, io, pos, tot, &exceed);
+	result = vvp_prep_size(env, obj, io, pos, tot, &exceed);
 	if (result != 0)
 		return result;
 	else if (exceed != 0)
@@ -886,7 +1072,7 @@ static int vvp_io_fault_start(const struct lu_env *env,
 	/* offset of the last byte on the page */
 	offset = cl_offset(obj, fio->ft_index + 1) - 1;
 	LASSERT(cl_index(obj, offset) == fio->ft_index);
-	result = ccc_prep_size(env, obj, io, 0, offset + 1, NULL);
+	result = vvp_prep_size(env, obj, io, 0, offset + 1, NULL);
 	if (result != 0)
 		return result;
 
@@ -1075,6 +1261,12 @@ static int vvp_io_read_page(const struct lu_env *env,
 	return 0;
 }
 
+void vvp_io_end(const struct lu_env *env, const struct cl_io_slice *ios)
+{
+	CLOBINVRNT(env, ios->cis_io->ci_obj,
+		   vvp_object_invariant(ios->cis_io->ci_obj));
+}
+
 static const struct cl_io_operations vvp_io_ops = {
 	.op = {
 		[CIT_READ] = {
-- 
2.1.0

[toc] | [prev] | [next] | [standalone]

Page 1 of 2  [1] 2  Next page →

Back to top | Article view | linux.kernel

csiph-web