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Groups > linux.kernel > #1367689
| From | green@linuxhacker.ru |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 21/46] staging/lustre/llite: clip page correctly for vvp_io_commit_sync |
| Date | 2016-03-31 02:00 +0200 |
| Message-ID | <riybN-4r2-33@gated-at.bofh.it> (permalink) |
| References | <riy25-4mi-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Jinshan Xiong <jinshan.xiong@intel.com>
The original code was wrong which clipped page incorrectly for
partial pages started with zero.
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/8531
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4201
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: wangdi <di.wang@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
drivers/staging/lustre/lustre/llite/vvp_io.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c
index fb6f932..e44ef21 100644
--- a/drivers/staging/lustre/lustre/llite/vvp_io.c
+++ b/drivers/staging/lustre/lustre/llite/vvp_io.c
@@ -595,15 +595,17 @@ static int vvp_io_commit_sync(const struct lu_env *env, struct cl_io *io,
if (plist->pl_nr == 0)
return 0;
- if (from != 0) {
+ if (from > 0 || to != PAGE_SIZE) {
page = cl_page_list_first(plist);
- cl_page_clip(env, page, from,
- plist->pl_nr == 1 ? to : PAGE_SIZE);
- }
- if (to != PAGE_SIZE && plist->pl_nr > 1) {
+ if (plist->pl_nr == 1) {
+ cl_page_clip(env, page, from, to);
+ } else if (from > 0) {
+ cl_page_clip(env, page, from, PAGE_SIZE);
+ } else {
page = cl_page_list_last(plist);
cl_page_clip(env, page, 0, to);
}
+ }
cl_2queue_init(queue);
cl_page_list_splice(plist, &queue->c2_qin);
--
2.1.0
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[PATCH v2 00/46] Lustre IO stack simplifications and cleanups green@linuxhacker.ru - 2016-03-31 01:50 +0200
[PATCH v2 04/46] staging/lustre: Reintroduce global env list green@linuxhacker.ru - 2016-03-31 01:50 +0200
[PATCH v2 06/46] staging/lustre/osc: to drop LRU pages with cl_lru_work green@linuxhacker.ru - 2016-03-31 01:50 +0200
[PATCH v2 31/46] staging/lustre/llite: use vui prefix for struct vvp_io members green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 34/46] staging/lustre/llite: Rename struct ccc_grouplock to ll_grouplock green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 43/46] staging/lustre/ldlm: restore the ELC for enqueue green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 36/46] staging/lustre/llite: rename struct ccc_thread_info to vvp_thread_info green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 15/46] staging/lustre/obd: remove struct client_obd_lock green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 18/46] staging/lustre/clio: generalize cl_sync_io green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 14/46] staging/lustre/lmv: remove lmv_init_{lock,unlock}() green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 16/46] staging/lustre/llite: remove some cl wrappers green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 37/46] staging/lustre/llite: Remove ccc_global_{init,fini}() green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 33/46] staging/lustre/llite: rename ccc_req to vvp_req green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 27/46] staging/lustre/llite: rename ccc_page to vvp_page green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 29/46] staging/lustre:llite: remove struct ll_ra_read green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 21/46] staging/lustre/llite: clip page correctly for vvp_io_commit_sync green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 22/46] staging/lustre/llite: deadlock for page write green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 45/46] staging/lustre/ldlm: Solve a race for LRU lock cancel green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 30/46] staging/lustre/llite: merge ccc_io and vvp_io green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 10/46] staging/lustre/osc: add weight function for DLM lock green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 38/46] staging/lustre/llite: Move ll_dirent_type_get and make it static green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 35/46] staging/lustre/llite: Rename struct vvp_thread_info to ll_thread_info green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 23/46] staging/lustre/llite: make sure we do cl_page_clip on the last page green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 32/46] staging/lustre/llite: move vvp_io functions to vvp_io.c green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 17/46] staging/lustre: Remove struct ll_iattr green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 46/46] staging/lustre: lov_io_init() should return error code green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 25/46] staging/lustre/llite: rename ccc_device to vvp_device green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 08/46] staging/lustre/obdclass: Add a preallocated percpu cl_env green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 44/46] staging/lustre: Fix spacing style before open parenthesis green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 28/46] staging/lustre/llite: rename ccc_lock to vvp_lock green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 13/46] staging/lustre/llite: remove lli_lvb green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 41/46] staging/lustre/ldlm: ELC picks locks in a safer policy green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 40/46] staging/lustre/llite: Remove unused vui_local_lock field green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 12/46] staging/lustre/clio: optimize read ahead code green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 42/46] staging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy() green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 39/46] staging/lustre/llite: Move several declarations to llite_internal.h green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 20/46] staging/lustre: update comments after cl_lock simplification green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 24/46] staging/lustre/llite: merge lclient.h into llite/vvp_internal.h green@linuxhacker.ru - 2016-03-31 02:00 +0200
[PATCH v2 01/46] staging/lustre/obdclass: limit lu_site hash table size green@linuxhacker.ru - 2016-03-31 02:10 +0200
[PATCH v2 02/46] staging/lustre: Get rid of CFS_PAGE_MASK green@linuxhacker.ru - 2016-03-31 02:10 +0200
[PATCH v2 05/46] staging/lustre/osc: Adjustment on osc LRU for performance green@linuxhacker.ru - 2016-03-31 02:10 +0200
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