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Groups > linux.kernel > #1342385 > unrolled thread
| Started by | mchristi@redhat.com |
|---|---|
| First post | 2016-02-24 20:50 +0100 |
| Last post | 2016-02-29 18:40 +0100 |
| Articles | 20 on this page of 29 — 4 participants |
Back to article view | Back to linux.kernel
[PATCH 00/35 v4] separate operations from flags in the bio/request structs mchristi@redhat.com - 2016-02-24 20:50 +0100
[PATCH 31/35] block, fs: remove old REQ definitions. mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 14/35] hfsplus: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 22/35] drbd: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 20/35] dm: pass dm stats data dir instead of bi_rw mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 26/35] block: set op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
Re: [PATCH 26/35] block: set op to REQ_OP kbuild test robot <lkp@intel.com> - 2016-02-24 23:20 +0100
[PATCH 32/35] block: shrink bi_rw and bi_op mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 19/35] dm: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 33/35] block, drivers: add REQ_OP_FLUSH operation mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 24/35] xen: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 30/35] block, fs, drivers: do not test bi_rw for REQ_OPs mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 23/35] md/raid: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 34/35] block: add QUEUE_FLAGs for flush and fua mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 28/35] blktrace: get op from req->op/bio->bi_op mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 29/35] ide cd: do not set REQ_WRITE on requests. mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 27/35] drivers: set request op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 21/35] bcache: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 16/35] nilfs: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:00 +0100
[PATCH 07/35] btrfs: have submit_one_bio users setup bio bi_op mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 10/35] btrfs: don't pass rq_flag_bits if there is a bio mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 03/35] block, fs, mm, drivers: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 15/35] mpage: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 06/35] direct-io: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 13/35] xfs: set bi_op to REQ_OP mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 09/35] btrfs: update __btrfs_map_block for bi_op transition mchristi@redhat.com - 2016-02-24 21:10 +0100
[PATCH 04/35] fs: have submit_bh users pass in op and flags separately mchristi@redhat.com - 2016-02-24 21:10 +0100
Re: [PATCH 00/35 v4] separate operations from flags in the bio/request structs Christoph Hellwig <hch@infradead.org> - 2016-02-29 18:20 +0100
Re: [PATCH 00/35 v4] separate operations from flags in the bio/request structs Mike Christie <michaelc@cs.wisc.edu> - 2016-02-29 18:40 +0100
Page 1 of 2 [1] 2 Next page →
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 20:50 +0100 |
| Subject | [PATCH 00/35 v4] separate operations from flags in the bio/request structs |
| Message-ID | <r5NBE-M1-3@gated-at.bofh.it> |
The following patches begin to cleanup the request->cmd_flags and bio->bi_rw mess. We currently use cmd_flags to specify the operation, attributes and state of the request. For bi_rw we use it for similar info and also the priority but then also have another bi_flags field for state. At some point, we abused them so much we just made cmd_flags 64 bits, so we could add more. The following patches seperate the operation (read, write discard, flush, etc) from cmd_flags/bi_rw. This patchset was made against linux-next from today Feb 24 2016 (git tag next-20160224). I put a git tree here: https://github.com/mikechristie/linux-kernel.git v4: 1. Rebased to current linux-next tree. v3: 1. Used "=" instead of "|=" to setup bio bi_rw. 2. Removed __get_request cmd_flags compat code. 3. Merged initial dm related changes requested by Mike Snitzer. 4. Fixed ubd kbuild errors in flush related patches. 5. Fix 80 char col issues in several patches. 6. Fix issue with one of the btrfs patches where it looks like I reverted a patch when trying to fix a merge error. v2 1. Dropped arguments from submit_bio, and had callers setup bio. 2. Add REQ_OP_FLUSH for request_fn users and renamed REQ_FLUSH to REQ_PREFLUSH for make_request_fn users. 3. Dropped bio/rq_data_dir functions, and added a op_is_write function instead.
[toc] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 31/35] block, fs: remove old REQ definitions. |
| Message-ID | <r5NLk-PN-1@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
We no longer use REQ_WRITE. REQ_WRITE_SAME and REQ_DISCARD,
so this patch removes them.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
include/linux/blk_types.h | 21 ++++++---------------
include/linux/fs.h | 21 +++++++++++----------
include/trace/events/f2fs.h | 1 -
3 files changed, 17 insertions(+), 26 deletions(-)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 6e49c91..b4251ed 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -151,7 +151,6 @@ struct bio {
*/
enum rq_flag_bits {
/* common flags */
- __REQ_WRITE, /* not set, read. set, write */
__REQ_FAILFAST_DEV, /* no driver retries of device errors */
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
@@ -159,9 +158,7 @@ enum rq_flag_bits {
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_PRIO, /* boost priority in cfq */
- __REQ_DISCARD, /* request to discard sectors */
- __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */
- __REQ_WRITE_SAME, /* write same block many times */
+ __REQ_SECURE, /* secure discard (used with REQ_OP_DISCARD) */
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
@@ -197,28 +194,22 @@ enum rq_flag_bits {
__REQ_NR_BITS, /* stops here */
};
-#define REQ_WRITE (1ULL << __REQ_WRITE)
#define REQ_FAILFAST_DEV (1ULL << __REQ_FAILFAST_DEV)
#define REQ_FAILFAST_TRANSPORT (1ULL << __REQ_FAILFAST_TRANSPORT)
#define REQ_FAILFAST_DRIVER (1ULL << __REQ_FAILFAST_DRIVER)
#define REQ_SYNC (1ULL << __REQ_SYNC)
#define REQ_META (1ULL << __REQ_META)
#define REQ_PRIO (1ULL << __REQ_PRIO)
-#define REQ_DISCARD (1ULL << __REQ_DISCARD)
-#define REQ_WRITE_SAME (1ULL << __REQ_WRITE_SAME)
#define REQ_NOIDLE (1ULL << __REQ_NOIDLE)
#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
- (REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | \
- REQ_DISCARD | REQ_WRITE_SAME | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | \
- REQ_SECURE | REQ_INTEGRITY)
+ (REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
+ REQ_FLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
#define REQ_CLONE_MASK REQ_COMMON_MASK
-#define BIO_NO_ADVANCE_ITER_MASK (REQ_DISCARD|REQ_WRITE_SAME)
-
/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
(REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA | REQ_FLUSH_SEQ)
@@ -250,9 +241,9 @@ enum rq_flag_bits {
enum req_op {
REQ_OP_READ,
- REQ_OP_WRITE = REQ_WRITE,
- REQ_OP_DISCARD = REQ_DISCARD,
- REQ_OP_WRITE_SAME = REQ_WRITE_SAME,
+ REQ_OP_WRITE,
+ REQ_OP_DISCARD, /* request to discard sectors */
+ REQ_OP_WRITE_SAME, /* write same block many times */
};
typedef unsigned int blk_qc_t;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0a10de0..7b57bb3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -153,9 +153,10 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map, int uptodate);
#define CHECK_IOVEC_ONLY -1
/*
- * The below are the various read and write types that we support. Some of
+ * The below are the various read and write flags that we support. Some of
* them include behavioral modifiers that send information down to the
- * block layer and IO scheduler. Terminology:
+ * block layer and IO scheduler. They should be used along with a req_op.
+ * Terminology:
*
* The block layer uses device plugging to defer IO a little bit, in
* the hope that we will see more IO very shortly. This increases
@@ -194,19 +195,19 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map, int uptodate);
* non-volatile media on completion.
*
*/
-#define RW_MASK REQ_WRITE
+#define RW_MASK REQ_OP_WRITE
#define RWA_MASK REQ_RAHEAD
-#define READ 0
+#define READ REQ_OP_READ
#define WRITE RW_MASK
#define READA RWA_MASK
-#define READ_SYNC (READ | REQ_SYNC)
-#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE)
-#define WRITE_ODIRECT (WRITE | REQ_SYNC)
-#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
-#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FUA)
-#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
+#define READ_SYNC REQ_SYNC
+#define WRITE_SYNC (REQ_SYNC | REQ_NOIDLE)
+#define WRITE_ODIRECT REQ_SYNC
+#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
+#define WRITE_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FUA)
+#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
/*
* Attribute flags. These should be or-ed together to figure out what
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index db75d69..20f708e 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -31,7 +31,6 @@ TRACE_DEFINE_ENUM(BG_GC);
TRACE_DEFINE_ENUM(LFS);
TRACE_DEFINE_ENUM(SSR);
TRACE_DEFINE_ENUM(__REQ_RAHEAD);
-TRACE_DEFINE_ENUM(__REQ_WRITE);
TRACE_DEFINE_ENUM(__REQ_SYNC);
TRACE_DEFINE_ENUM(__REQ_NOIDLE);
TRACE_DEFINE_ENUM(__REQ_FLUSH);
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 14/35] hfsplus: set bi_op to REQ_OP |
| Message-ID | <r5NLk-PN-7@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has hfsplus set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/hfsplus/hfsplus_fs.h | 2 +-
fs/hfsplus/part_tbl.c | 5 +++--
fs/hfsplus/super.c | 6 ++++--
fs/hfsplus/wrapper.c | 15 +++++++++------
4 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index f91a1fa..80154aa 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -525,7 +525,7 @@ int hfsplus_compare_dentry(const struct dentry *parent,
/* wrapper.c */
int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf,
- void **data, int rw);
+ void **data, int op, int op_flags);
int hfsplus_read_wrapper(struct super_block *sb);
/* time macros */
diff --git a/fs/hfsplus/part_tbl.c b/fs/hfsplus/part_tbl.c
index eb355d8..63164eb 100644
--- a/fs/hfsplus/part_tbl.c
+++ b/fs/hfsplus/part_tbl.c
@@ -112,7 +112,8 @@ static int hfs_parse_new_pmap(struct super_block *sb, void *buf,
if ((u8 *)pm - (u8 *)buf >= buf_size) {
res = hfsplus_submit_bio(sb,
*part_start + HFS_PMAP_BLK + i,
- buf, (void **)&pm, READ);
+ buf, (void **)&pm, REQ_OP_READ,
+ 0);
if (res)
return res;
}
@@ -136,7 +137,7 @@ int hfs_part_find(struct super_block *sb,
return -ENOMEM;
res = hfsplus_submit_bio(sb, *part_start + HFS_PMAP_BLK,
- buf, &data, READ);
+ buf, &data, REQ_OP_READ, 0);
if (res)
goto out;
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 5d54490..01cf313 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -219,7 +219,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
- sbi->s_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error = error2;
if (!write_backup)
@@ -227,7 +228,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + sbi->sect_count - 2,
- sbi->s_backup_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_backup_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error2 = error;
out:
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index d026bb3..c5c916d 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -30,7 +30,8 @@ struct hfsplus_wd {
* @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes
* @buf: buffer for I/O
* @data: output pointer for location of requested data
- * @rw: direction of I/O
+ * @op: direction of I/O
+ * @op_flags: request op flags
*
* The unit of I/O is hfsplus_min_io_size(sb), which may be bigger than
* HFSPLUS_SECTOR_SIZE, and @buf must be sized accordingly. On reads
@@ -44,7 +45,7 @@ struct hfsplus_wd {
* will work correctly.
*/
int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
- void *buf, void **data, int rw)
+ void *buf, void **data, int op, int op_flags)
{
struct bio *bio;
int ret = 0;
@@ -65,9 +66,10 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = sb->s_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
- if (!(rw & WRITE) && data)
+ if (op != WRITE && data)
*data = (u8 *)buf + offset;
while (io_size > 0) {
@@ -182,7 +184,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
reread:
error = hfsplus_submit_bio(sb, part_start + HFSPLUS_VOLHEAD_SECTOR,
sbi->s_vhdr_buf, (void **)&sbi->s_vhdr,
- READ);
+ REQ_OP_READ, 0);
if (error)
goto out_free_backup_vhdr;
@@ -214,7 +216,8 @@ reread:
error = hfsplus_submit_bio(sb, part_start + part_size - 2,
sbi->s_backup_vhdr_buf,
- (void **)&sbi->s_backup_vhdr, READ);
+ (void **)&sbi->s_backup_vhdr, REQ_OP_READ,
+ 0);
if (error)
goto out_free_backup_vhdr;
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 22/35] drbd: set bi_op to REQ_OP |
| Message-ID | <r5NLk-PN-5@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has drbd set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
Lars and Philip, I might have split this patch up a little weird.
Thisi patch handles setting up the bio, and then patch 30
(0030-block-fs-drivers-do-not-test-bi_rw-for-REQ_OPs.patch) handles
where were check/read bio->bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/block/drbd/drbd_actlog.c | 29 ++++++++++++++++-------------
drivers/block/drbd/drbd_bitmap.c | 6 +++---
drivers/block/drbd/drbd_int.h | 4 ++--
drivers/block/drbd/drbd_main.c | 5 +++--
drivers/block/drbd/drbd_receiver.c | 37 +++++++++++++++++++++++++------------
drivers/block/drbd/drbd_worker.c | 3 ++-
6 files changed, 51 insertions(+), 33 deletions(-)
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 6069e15..2fa8534 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -137,19 +137,19 @@ void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_b
static int _drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
struct bio *bio;
/* we do all our meta data IO in aligned 4k blocks. */
const int size = 4096;
- int err;
+ int err, op_flags = 0;
device->md_io.done = 0;
device->md_io.error = -ENODEV;
- if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags))
- rw |= REQ_FUA | REQ_FLUSH;
- rw |= REQ_SYNC | REQ_NOIDLE;
+ if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA, &device->flags))
+ op_flags |= REQ_FUA | REQ_FLUSH;
+ op_flags |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
bio->bi_bdev = bdev->md_bdev;
@@ -159,9 +159,10 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
goto out;
bio->bi_private = device;
bio->bi_end_io = drbd_md_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
- if (!(rw & WRITE) && device->state.disk == D_DISKLESS && device->ldev == NULL)
+ if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS && device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */
;
else if (!get_ldev_if_state(device, D_ATTACHING)) {
@@ -174,7 +175,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
bio_get(bio); /* one bio_put() is in the completion handler */
atomic_inc(&device->md_io.in_use); /* drbd_md_put_buffer() is in the completion handler */
device->md_io.submit_jif = jiffies;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
bio_io_error(bio);
else
submit_bio(bio);
@@ -188,7 +189,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
}
int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
int err;
D_ASSERT(device, atomic_read(&device->md_io.in_use) == 1);
@@ -197,19 +198,21 @@ int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bd
dynamic_drbd_dbg(device, "meta_data io: %s [%d]:%s(,%llus,%s) %pS\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ",
+ (unsigned long long)sector, (op == REQ_OP_WRITE) ? "WRITE" : "READ",
(void*)_RET_IP_ );
if (sector < drbd_md_first_sector(bdev) ||
sector + 7 > drbd_md_last_sector(bdev))
drbd_alert(device, "%s [%d]:%s(,%llus,%s) out of range md access!\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ");
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ");
- err = _drbd_md_sync_page_io(device, bdev, sector, rw);
+ err = _drbd_md_sync_page_io(device, bdev, sector, op);
if (err) {
drbd_err(device, "drbd_md_sync_page_io(,%llus,%s) failed with error %d\n",
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ", err);
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ", err);
}
return err;
}
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index e8959fe..126bf4a 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -980,7 +980,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
struct drbd_bitmap *b = device->bitmap;
struct page *page;
unsigned int len;
- unsigned int rw = (ctx->flags & BM_AIO_READ) ? READ : WRITE;
+ unsigned int op = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ : REQ_OP_WRITE;
sector_t on_disk_sector =
device->ldev->md.md_offset + device->ldev->md.bm_offset;
@@ -1011,9 +1011,9 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
bio_add_page(bio, page, len, 0);
bio->bi_private = ctx;
bio->bi_end_io = drbd_bm_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
bio_io_error(bio);
} else {
submit_bio(bio);
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index c227fd4..a0ddd75 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1507,7 +1507,7 @@ extern int drbd_resync_finished(struct drbd_device *device);
extern void *drbd_md_get_buffer(struct drbd_device *device, const char *intent);
extern void drbd_md_put_buffer(struct drbd_device *device);
extern int drbd_md_sync_page_io(struct drbd_device *device,
- struct drbd_backing_dev *bdev, sector_t sector, int rw);
+ struct drbd_backing_dev *bdev, sector_t sector, int op);
extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int);
extern void wait_until_done_or_force_detached(struct drbd_device *device,
struct drbd_backing_dev *bdev, unsigned int *done);
@@ -1557,7 +1557,7 @@ extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector
bool throttle_if_app_is_waiting);
extern int drbd_submit_peer_request(struct drbd_device *,
struct drbd_peer_request *, const unsigned,
- const int);
+ const unsigned, const int);
extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *);
extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_peer_device *, u64,
sector_t, unsigned int,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index fa20977..4ccfd17 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3061,7 +3061,7 @@ void drbd_md_write(struct drbd_device *device, void *b)
D_ASSERT(device, drbd_md_ss(device->ldev) == device->ldev->md.md_offset);
sector = device->ldev->md.md_offset;
- if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) {
+ if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) {
/* this was a try anyways ... */
drbd_err(device, "meta data update failed!\n");
drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
@@ -3263,7 +3263,8 @@ int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev)
* Affects the paranoia out-of-range access check in drbd_md_sync_page_io(). */
bdev->md.md_size_sect = 8;
- if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, READ)) {
+ if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset,
+ REQ_OP_READ)) {
/* NOTE: can't do normal error processing here as this is
called BEFORE disk is attached */
drbd_err(device, "Error while reading metadata.\n");
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 050aaa1..a0b95da 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1398,7 +1398,8 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin
/* TODO allocate from our own bio_set. */
int drbd_submit_peer_request(struct drbd_device *device,
struct drbd_peer_request *peer_req,
- const unsigned rw, const int fault_type)
+ const unsigned op, const unsigned op_flags,
+ const int fault_type)
{
struct bio *bios = NULL;
struct bio *bio;
@@ -1450,7 +1451,8 @@ next_bio:
/* > peer_req->i.sector, unless this is the first bio */
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = device->ldev->backing_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
bio->bi_private = peer_req;
bio->bi_end_io = drbd_peer_request_endio;
@@ -1458,7 +1460,7 @@ next_bio:
bios = bio;
++n_bios;
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
bio->bi_iter.bi_size = data_size;
goto submit;
}
@@ -1830,7 +1832,8 @@ static int recv_resync_read(struct drbd_peer_device *peer_device, sector_t secto
spin_unlock_irq(&device->resource->req_lock);
atomic_add(pi->size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, WRITE, DRBD_FAULT_RS_WR) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_WRITE, 0,
+ DRBD_FAULT_RS_WR) == 0)
return 0;
/* don't care for the reason here */
@@ -2152,12 +2155,19 @@ static int wait_for_and_update_peer_seq(struct drbd_peer_device *peer_device, co
/* see also bio_flags_to_wire()
* DRBD_REQ_*, because we need to semantically map the flags to data packet
* flags and back. We may replicate to other kernel versions. */
-static unsigned long wire_flags_to_bio(u32 dpf)
+static unsigned long wire_flags_to_bio_flags(u32 dpf)
{
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
- (dpf & DP_FLUSH ? REQ_FLUSH : 0) |
- (dpf & DP_DISCARD ? REQ_DISCARD : 0);
+ (dpf & DP_FLUSH ? REQ_FLUSH : 0);
+}
+
+static unsigned long wire_flags_to_bio_op(u32 dpf)
+{
+ if (dpf & DP_DISCARD)
+ return REQ_OP_DISCARD;
+ else
+ return REQ_OP_WRITE;
}
static void fail_postponed_requests(struct drbd_device *device, sector_t sector,
@@ -2303,7 +2313,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
struct drbd_peer_request *peer_req;
struct p_data *p = pi->data;
u32 peer_seq = be32_to_cpu(p->seq_num);
- int rw = WRITE;
+ int op, op_flags;
u32 dp_flags;
int err, tp;
@@ -2342,14 +2352,15 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
peer_req->flags |= EE_APPLICATION;
dp_flags = be32_to_cpu(p->dp_flags);
- rw |= wire_flags_to_bio(dp_flags);
+ op = wire_flags_to_bio_op(dp_flags);
+ op_flags = wire_flags_to_bio_flags(dp_flags);
if (pi->cmd == P_TRIM) {
struct request_queue *q = bdev_get_queue(device->ldev->backing_bdev);
peer_req->flags |= EE_IS_TRIM;
if (!blk_queue_discard(q))
peer_req->flags |= EE_IS_TRIM_USE_ZEROOUT;
D_ASSERT(peer_device, peer_req->i.size > 0);
- D_ASSERT(peer_device, rw & REQ_DISCARD);
+ D_ASSERT(peer_device, op == REQ_OP_DISCARD);
D_ASSERT(peer_device, peer_req->pages == NULL);
} else if (peer_req->pages == NULL) {
D_ASSERT(device, peer_req->i.size == 0);
@@ -2433,7 +2444,8 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
peer_req->flags |= EE_CALL_AL_COMPLETE_IO;
}
- err = drbd_submit_peer_request(device, peer_req, rw, DRBD_FAULT_DT_WR);
+ err = drbd_submit_peer_request(device, peer_req, op, op_flags,
+ DRBD_FAULT_DT_WR);
if (!err)
return 0;
@@ -2723,7 +2735,8 @@ submit_for_resync:
submit:
update_receiver_timing_details(connection, drbd_submit_peer_request);
inc_unacked(device);
- if (drbd_submit_peer_request(device, peer_req, READ, fault_type) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ fault_type) == 0)
return 0;
/* don't care for the reason here */
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 4d87499..2a04b43 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -397,7 +397,8 @@ static int read_for_csum(struct drbd_peer_device *peer_device, sector_t sector,
spin_unlock_irq(&device->resource->req_lock);
atomic_add(size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, READ, DRBD_FAULT_RS_RD) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ DRBD_FAULT_RS_RD) == 0)
return 0;
/* If it failed because of ENOMEM, retry should help. If it failed
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 20/35] dm: pass dm stats data dir instead of bi_rw |
| Message-ID | <r5NLl-PN-11@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
It looks like dm stats cares about the data direction
(READ vs WRITE) and does not need the bio/request flags.
Commands like REQ_FLUSH, REQ_DISCARD and REQ_WRITE_SAME
are currently always set with REQ_WRITE, so the extra check for
REQ_DISCARD in dm_stats_account_io is not needed.
This patch has it use the bio and request data_dir helpers
instead of accessing the bi_rw/cmd_flags directly. This makes
the next patches that remove the operation from the cmd_flags
and bi_rw easier, because we will no longer have the REQ_WRITE
bit set for operations like discards.
This patch is compile tested only.
v2:
1. Merged Mike Snitzer's fixes to pass in int instead of
unsigned long.
2. Fix 80 char col issues.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/dm-stats.c | 9 ++++-----
drivers/md/dm.c | 21 ++++++++++++---------
2 files changed, 16 insertions(+), 14 deletions(-)
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index 8289804..4fba26c 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -514,11 +514,10 @@ static void dm_stat_round(struct dm_stat *s, struct dm_stat_shared *shared,
}
static void dm_stat_for_entry(struct dm_stat *s, size_t entry,
- unsigned long bi_rw, sector_t len,
+ int idx, sector_t len,
struct dm_stats_aux *stats_aux, bool end,
unsigned long duration_jiffies)
{
- unsigned long idx = bi_rw & REQ_WRITE;
struct dm_stat_shared *shared = &s->stat_shared[entry];
struct dm_stat_percpu *p;
@@ -584,7 +583,7 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t entry,
#endif
}
-static void __dm_stat_bio(struct dm_stat *s, unsigned long bi_rw,
+static void __dm_stat_bio(struct dm_stat *s, int bi_rw,
sector_t bi_sector, sector_t end_sector,
bool end, unsigned long duration_jiffies,
struct dm_stats_aux *stats_aux)
@@ -645,8 +644,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw,
last = raw_cpu_ptr(stats->last);
stats_aux->merged =
(bi_sector == (ACCESS_ONCE(last->last_sector) &&
- ((bi_rw & (REQ_WRITE | REQ_DISCARD)) ==
- (ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD)))
+ ((bi_rw == WRITE) ==
+ (ACCESS_ONCE(last->last_rw) == WRITE))
));
ACCESS_ONCE(last->last_sector) = end_sector;
ACCESS_ONCE(last->last_rw) = bi_rw;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index fe03b26..38c7d93 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -723,8 +723,9 @@ static void start_io_acct(struct dm_io *io)
atomic_inc_return(&md->pending[rw]));
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector,
- bio_sectors(bio), false, 0, &io->stats_aux);
+ dm_stats_account_io(&md->stats, bio_data_dir(bio),
+ bio->bi_iter.bi_sector, bio_sectors(bio),
+ false, 0, &io->stats_aux);
}
static void end_io_acct(struct dm_io *io)
@@ -738,8 +739,9 @@ static void end_io_acct(struct dm_io *io)
generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time);
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector,
- bio_sectors(bio), true, duration, &io->stats_aux);
+ dm_stats_account_io(&md->stats, bio_data_dir(bio),
+ bio->bi_iter.bi_sector, bio_sectors(bio),
+ true, duration, &io->stats_aux);
/*
* After this is decremented the bio must not be touched if it is
@@ -1121,9 +1123,9 @@ static void rq_end_stats(struct mapped_device *md, struct request *orig)
if (unlikely(dm_stats_used(&md->stats))) {
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies - tio->duration_jiffies;
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
- tio->n_sectors, true, tio->duration_jiffies,
- &tio->stats_aux);
+ dm_stats_account_io(&md->stats, rq_data_dir(orig),
+ blk_rq_pos(orig), tio->n_sectors, true,
+ tio->duration_jiffies, &tio->stats_aux);
}
}
@@ -2069,8 +2071,9 @@ static void dm_start_request(struct mapped_device *md, struct request *orig)
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies;
tio->n_sectors = blk_rq_sectors(orig);
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
- tio->n_sectors, false, 0, &tio->stats_aux);
+ dm_stats_account_io(&md->stats, rq_data_dir(orig),
+ blk_rq_pos(orig), tio->n_sectors, false, 0,
+ &tio->stats_aux);
}
/*
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 26/35] block: set op to REQ_OP |
| Message-ID | <r5NLl-PN-15@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch converts the request related block layer code to set
request->op to a REQ_OP and cmd_flags to rq_flag_bits.
There is some tmp compat code when setting up cmd_flags so it
still carries both the op and flags. It will be removed in
in later patches in this set when I have converted all drivers.
I have not been able to test the mq paths with real mq hardware.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
block/blk-core.c | 60 ++++++++++++++++++++++++++--------------------
block/blk-flush.c | 1 +
block/blk-merge.c | 10 ++++----
block/blk-mq.c | 38 ++++++++++++++++-------------
block/cfq-iosched.c | 53 +++++++++++++++++++++++-----------------
block/elevator.c | 8 +++----
include/linux/blk-cgroup.h | 13 +++++-----
include/linux/blkdev.h | 28 +++++++++++-----------
include/linux/elevator.h | 4 ++--
9 files changed, 120 insertions(+), 95 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 74aa201..60a0edb 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -959,10 +959,10 @@ static void __freed_request(struct request_list *rl, int sync)
* A request has just been released. Account for it, update the full and
* congestion status, wake up any waiters. Called under q->queue_lock.
*/
-static void freed_request(struct request_list *rl, unsigned int flags)
+static void freed_request(struct request_list *rl, int op, unsigned int flags)
{
struct request_queue *q = rl->q;
- int sync = rw_is_sync(flags);
+ int sync = rw_is_sync(op, flags);
q->nr_rqs[sync]--;
rl->count[sync]--;
@@ -1054,7 +1054,8 @@ static struct io_context *rq_ioc(struct bio *bio)
/**
* __get_request - get a free request
* @rl: request list to allocate from
- * @rw_flags: RW and SYNC flags
+ * @op: REQ_OP_READ/REQ_OP_WRITE
+ * @op_flags: rq_flag_bits
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
@@ -1065,21 +1066,22 @@ static struct io_context *rq_ioc(struct bio *bio)
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *__get_request(struct request_list *rl, int rw_flags,
- struct bio *bio, gfp_t gfp_mask)
+static struct request *__get_request(struct request_list *rl, int op,
+ int op_flags, struct bio *bio,
+ gfp_t gfp_mask)
{
struct request_queue *q = rl->q;
struct request *rq;
struct elevator_type *et = q->elevator->type;
struct io_context *ioc = rq_ioc(bio);
struct io_cq *icq = NULL;
- const bool is_sync = rw_is_sync(rw_flags) != 0;
+ const bool is_sync = rw_is_sync(op, op_flags) != 0;
int may_queue;
if (unlikely(blk_queue_dying(q)))
return ERR_PTR(-ENODEV);
- may_queue = elv_may_queue(q, rw_flags);
+ may_queue = elv_may_queue(q, op, op_flags);
if (may_queue == ELV_MQUEUE_NO)
goto rq_starved;
@@ -1123,7 +1125,7 @@ static struct request *__get_request(struct request_list *rl, int rw_flags,
/*
* Decide whether the new request will be managed by elevator. If
- * so, mark @rw_flags and increment elvpriv. Non-zero elvpriv will
+ * so, mark @op_flags and increment elvpriv. Non-zero elvpriv will
* prevent the current elevator from being destroyed until the new
* request is freed. This guarantees icq's won't be destroyed and
* makes creating new ones safe.
@@ -1132,14 +1134,14 @@ static struct request *__get_request(struct request_list *rl, int rw_flags,
* it will be created after releasing queue_lock.
*/
if (blk_rq_should_init_elevator(bio) && !blk_queue_bypass(q)) {
- rw_flags |= REQ_ELVPRIV;
+ op_flags |= REQ_ELVPRIV;
q->nr_rqs_elvpriv++;
if (et->icq_cache && ioc)
icq = ioc_lookup_icq(ioc, q);
}
if (blk_queue_io_stat(q))
- rw_flags |= REQ_IO_STAT;
+ op_flags |= REQ_IO_STAT;
spin_unlock_irq(q->queue_lock);
/* allocate and init request */
@@ -1149,10 +1151,12 @@ static struct request *__get_request(struct request_list *rl, int rw_flags,
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- rq->cmd_flags = rw_flags | REQ_ALLOCED;
+ /* tmp compat - allow users to check either one for the op */
+ rq->cmd_flags = op | op_flags | REQ_ALLOCED;
+ rq->op = op;
/* init elvpriv */
- if (rw_flags & REQ_ELVPRIV) {
+ if (op_flags & REQ_ELVPRIV) {
if (unlikely(et->icq_cache && !icq)) {
if (ioc)
icq = ioc_create_icq(ioc, q, gfp_mask);
@@ -1178,7 +1182,7 @@ out:
if (ioc_batching(q, ioc))
ioc->nr_batch_requests--;
- trace_block_getrq(q, bio, rw_flags & 1);
+ trace_block_getrq(q, bio, op);
return rq;
fail_elvpriv:
@@ -1208,7 +1212,7 @@ fail_alloc:
* queue, but this is pretty rare.
*/
spin_lock_irq(q->queue_lock);
- freed_request(rl, rw_flags);
+ freed_request(rl, op, op_flags);
/*
* in the very unlikely event that allocation failed and no
@@ -1226,7 +1230,8 @@ rq_starved:
/**
* get_request - get a free request
* @q: request_queue to allocate request from
- * @rw_flags: RW and SYNC flags
+ * op: REQ_OP_READ/REQ_OP_WRITE
+ * @op_flags: rq_flag_bits
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
@@ -1237,17 +1242,18 @@ rq_starved:
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *get_request(struct request_queue *q, int rw_flags,
- struct bio *bio, gfp_t gfp_mask)
+static struct request *get_request(struct request_queue *q, int op,
+ int op_flags, struct bio *bio,
+ gfp_t gfp_mask)
{
- const bool is_sync = rw_is_sync(rw_flags) != 0;
+ const bool is_sync = rw_is_sync(op, op_flags) != 0;
DEFINE_WAIT(wait);
struct request_list *rl;
struct request *rq;
rl = blk_get_rl(q, bio); /* transferred to @rq on success */
retry:
- rq = __get_request(rl, rw_flags, bio, gfp_mask);
+ rq = __get_request(rl, op, op_flags, bio, gfp_mask);
if (!IS_ERR(rq))
return rq;
@@ -1260,7 +1266,7 @@ retry:
prepare_to_wait_exclusive(&rl->wait[is_sync], &wait,
TASK_UNINTERRUPTIBLE);
- trace_block_sleeprq(q, bio, rw_flags & 1);
+ trace_block_sleeprq(q, bio, op);
spin_unlock_irq(q->queue_lock);
io_schedule();
@@ -1289,7 +1295,7 @@ static struct request *blk_old_get_request(struct request_queue *q, int rw,
create_io_context(gfp_mask, q->node);
spin_lock_irq(q->queue_lock);
- rq = get_request(q, rw, NULL, gfp_mask);
+ rq = get_request(q, rw, 0, NULL, gfp_mask);
if (IS_ERR(rq))
spin_unlock_irq(q->queue_lock);
/* q->queue_lock is unlocked at this point */
@@ -1491,13 +1497,14 @@ void __blk_put_request(struct request_queue *q, struct request *req)
*/
if (req->cmd_flags & REQ_ALLOCED) {
unsigned int flags = req->cmd_flags;
+ int op = req->op;
struct request_list *rl = blk_rq_rl(req);
BUG_ON(!list_empty(&req->queuelist));
BUG_ON(ELV_ON_HASH(req));
blk_free_request(rl, req);
- freed_request(rl, flags);
+ freed_request(rl, op, flags);
blk_put_rl(rl);
}
}
@@ -1712,7 +1719,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
{
const bool sync = !!(bio->bi_rw & REQ_SYNC);
struct blk_plug *plug;
- int el_ret, rw_flags, where = ELEVATOR_INSERT_SORT;
+ int el_ret, rw_flags = 0, where = ELEVATOR_INSERT_SORT;
struct request *req;
unsigned int request_count = 0;
@@ -1772,7 +1779,6 @@ get_rq:
* but we need to set it earlier to expose the sync flag to the
* rq allocator and io schedulers.
*/
- rw_flags = bio_data_dir(bio);
if (sync)
rw_flags |= REQ_SYNC;
@@ -1780,7 +1786,7 @@ get_rq:
* Grab a free request. This is might sleep but can not fail.
* Returns with the queue unlocked.
*/
- req = get_request(q, rw_flags, bio, GFP_NOIO);
+ req = get_request(q, bio_data_dir(bio), rw_flags, bio, GFP_NOIO);
if (IS_ERR(req)) {
bio->bi_error = PTR_ERR(req);
bio_endio(bio);
@@ -2168,7 +2174,7 @@ EXPORT_SYMBOL(submit_bio);
static int blk_cloned_rq_check_limits(struct request_queue *q,
struct request *rq)
{
- if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->cmd_flags)) {
+ if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->op)) {
printk(KERN_ERR "%s: over max size limit.\n", __func__);
return -EIO;
}
@@ -2989,6 +2995,7 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
{
/* tmp compat. Allow users to set bi_op or bi_rw */
rq->cmd_flags |= bio_data_dir(bio);
+ rq->op = bio->bi_op;
if (bio_has_data(bio))
rq->nr_phys_segments = bio_phys_segments(q, bio);
@@ -3073,6 +3080,7 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone);
static void __blk_rq_prep_clone(struct request *dst, struct request *src)
{
dst->cpu = src->cpu;
+ dst->op = src->op;
dst->cmd_flags |= (src->cmd_flags & REQ_CLONE_MASK) | REQ_NOMERGE;
dst->cmd_type = src->cmd_type;
dst->__sector = blk_rq_pos(src);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index b05acca..e01d3ac 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -330,6 +330,7 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq)
flush_rq->cmd_type = REQ_TYPE_FS;
flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
+ flush_rq->op = REQ_OP_WRITE;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 888a7fe..f9e012e 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -653,7 +653,8 @@ static int attempt_merge(struct request_queue *q, struct request *req,
if (!rq_mergeable(req) || !rq_mergeable(next))
return 0;
- if (!blk_check_merge_flags(req->cmd_flags, next->cmd_flags))
+ if (!blk_check_merge_flags(req->cmd_flags, req->op, next->cmd_flags,
+ next->op))
return 0;
/*
@@ -667,7 +668,7 @@ static int attempt_merge(struct request_queue *q, struct request *req,
|| req_no_special_merge(next))
return 0;
- if (req->cmd_flags & REQ_WRITE_SAME &&
+ if (req->op == REQ_OP_WRITE_SAME &&
!blk_write_same_mergeable(req->bio, next->bio))
return 0;
@@ -755,7 +756,8 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
if (!rq_mergeable(rq) || !bio_mergeable(bio))
return false;
- if (!blk_check_merge_flags(rq->cmd_flags, bio->bi_rw))
+ if (!blk_check_merge_flags(rq->cmd_flags, rq->op, bio->bi_rw,
+ bio->bi_op))
return false;
/* different data direction or already started, don't merge */
@@ -771,7 +773,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
return false;
/* must be using the same buffer */
- if (rq->cmd_flags & REQ_WRITE_SAME &&
+ if (rq->op == REQ_OP_WRITE_SAME &&
!blk_write_same_mergeable(rq->bio, bio))
return false;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 1d0c3de..5581bac 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -159,16 +159,19 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
EXPORT_SYMBOL(blk_mq_can_queue);
static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
- struct request *rq, unsigned int rw_flags)
+ struct request *rq, int op,
+ unsigned int op_flags)
{
if (blk_queue_io_stat(q))
- rw_flags |= REQ_IO_STAT;
+ op_flags |= REQ_IO_STAT;
INIT_LIST_HEAD(&rq->queuelist);
/* csd/requeue_work/fifo_time is initialized before use */
rq->q = q;
rq->mq_ctx = ctx;
- rq->cmd_flags |= rw_flags;
+ rq->op = op;
+ /* tmp compat - allow users to check either one for the op */
+ rq->cmd_flags |= op | op_flags;
/* do not touch atomic flags, it needs atomic ops against the timer */
rq->cpu = -1;
INIT_HLIST_NODE(&rq->hash);
@@ -203,11 +206,11 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
rq->end_io_data = NULL;
rq->next_rq = NULL;
- ctx->rq_dispatched[rw_is_sync(rw_flags)]++;
+ ctx->rq_dispatched[rw_is_sync(op, op_flags)]++;
}
static struct request *
-__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw)
+__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int op, int op_flags)
{
struct request *rq;
unsigned int tag;
@@ -222,7 +225,7 @@ __blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw)
}
rq->tag = tag;
- blk_mq_rq_ctx_init(data->q, data->ctx, rq, rw);
+ blk_mq_rq_ctx_init(data->q, data->ctx, rq, op, op_flags);
return rq;
}
@@ -246,7 +249,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
if (!rq && !(flags & BLK_MQ_REQ_NOWAIT)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
@@ -254,7 +257,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
ctx = alloc_data.ctx;
}
blk_mq_put_ctx(ctx);
@@ -1167,28 +1170,29 @@ static struct request *blk_mq_map_request(struct request_queue *q,
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
struct request *rq;
- int rw = bio_data_dir(bio);
+ int op = bio_data_dir(bio);
+ int op_flags = 0;
struct blk_mq_alloc_data alloc_data;
blk_queue_enter_live(q);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- if (rw_is_sync(bio->bi_rw))
- rw |= REQ_SYNC;
+ if (rw_is_sync(bio->bi_op, bio->bi_rw))
+ op_flags |= REQ_SYNC;
- trace_block_getrq(q, bio, rw);
+ trace_block_getrq(q, bio, op);
blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
if (unlikely(!rq)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
- trace_block_sleeprq(q, bio, rw);
+ trace_block_sleeprq(q, bio, op);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
ctx = alloc_data.ctx;
hctx = alloc_data.hctx;
}
@@ -1242,7 +1246,7 @@ static int blk_mq_direct_issue_request(struct request *rq, blk_qc_t *cookie)
*/
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio->bi_rw);
+ const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
struct blk_map_ctx data;
struct request *rq;
@@ -1339,7 +1343,7 @@ done:
*/
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio->bi_rw);
+ const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
struct blk_plug *plug;
unsigned int request_count = 0;
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e3c591d..d7c719c 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -667,9 +667,10 @@ static inline void cfqg_put(struct cfq_group *cfqg)
} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int rw)
+ struct cfq_group *curr_cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.queued, rw, 1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, 1);
cfqg_stats_end_empty_time(&cfqg->stats);
cfqg_stats_set_start_group_wait_time(cfqg, curr_cfqg);
}
@@ -683,26 +684,30 @@ static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg,
#endif
}
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw)
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.queued, rw, -1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, -1);
}
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw)
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.merged, rw, 1);
+ blkg_rwstat_add(&cfqg->stats.merged, op, op_flags, 1);
}
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int rw)
+ uint64_t start_time, uint64_t io_start_time, int op,
+ int op_flags)
{
struct cfqg_stats *stats = &cfqg->stats;
unsigned long long now = sched_clock();
if (time_after64(now, io_start_time))
- blkg_rwstat_add(&stats->service_time, rw, now - io_start_time);
+ blkg_rwstat_add(&stats->service_time, op, op_flags,
+ now - io_start_time);
if (time_after64(io_start_time, start_time))
- blkg_rwstat_add(&stats->wait_time, rw,
+ blkg_rwstat_add(&stats->wait_time, op, op_flags,
io_start_time - start_time);
}
@@ -781,13 +786,16 @@ static inline void cfqg_put(struct cfq_group *cfqg) { }
#define cfq_log_cfqg(cfqd, cfqg, fmt, args...) do {} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int rw) { }
+ struct cfq_group *curr_cfqg, int op, int op_flags) { }
static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg,
unsigned long time, unsigned long unaccounted_time) { }
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw) { }
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw) { }
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
+ int op_flags) { }
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
+ int op_flags) { }
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int rw) { }
+ uint64_t start_time, uint64_t io_start_time, int op,
+ int op_flags) { }
#endif /* CONFIG_CFQ_GROUP_IOSCHED */
@@ -2461,10 +2469,10 @@ static void cfq_reposition_rq_rb(struct cfq_queue *cfqq, struct request *rq)
{
elv_rb_del(&cfqq->sort_list, rq);
cfqq->queued[rq_is_sync(rq)]--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags);
cfq_add_rq_rb(rq);
cfqg_stats_update_io_add(RQ_CFQG(rq), cfqq->cfqd->serving_group,
- rq->cmd_flags);
+ rq->op, rq->cmd_flags);
}
static struct request *
@@ -2517,7 +2525,7 @@ static void cfq_remove_request(struct request *rq)
cfq_del_rq_rb(rq);
cfqq->cfqd->rq_queued--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags);
if (rq->cmd_flags & REQ_PRIO) {
WARN_ON(!cfqq->prio_pending);
cfqq->prio_pending--;
@@ -2552,7 +2560,7 @@ static void cfq_merged_request(struct request_queue *q, struct request *req,
static void cfq_bio_merged(struct request_queue *q, struct request *req,
struct bio *bio)
{
- cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_rw);
+ cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_op, bio->bi_rw);
}
static void
@@ -2575,7 +2583,7 @@ cfq_merged_requests(struct request_queue *q, struct request *rq,
if (cfqq->next_rq == next)
cfqq->next_rq = rq;
cfq_remove_request(next);
- cfqg_stats_update_io_merged(RQ_CFQG(rq), next->cmd_flags);
+ cfqg_stats_update_io_merged(RQ_CFQG(rq), next->op, next->cmd_flags);
cfqq = RQ_CFQQ(next);
/*
@@ -4108,7 +4116,7 @@ static void cfq_insert_request(struct request_queue *q, struct request *rq)
rq->fifo_time = jiffies + cfqd->cfq_fifo_expire[rq_is_sync(rq)];
list_add_tail(&rq->queuelist, &cfqq->fifo);
cfq_add_rq_rb(rq);
- cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group,
+ cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group, rq->op,
rq->cmd_flags);
cfq_rq_enqueued(cfqd, cfqq, rq);
}
@@ -4206,7 +4214,8 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
cfqq->dispatched--;
(RQ_CFQG(rq))->dispatched--;
cfqg_stats_update_completion(cfqq->cfqg, rq_start_time_ns(rq),
- rq_io_start_time_ns(rq), rq->cmd_flags);
+ rq_io_start_time_ns(rq), rq->op,
+ rq->cmd_flags);
cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--;
@@ -4285,7 +4294,7 @@ static inline int __cfq_may_queue(struct cfq_queue *cfqq)
return ELV_MQUEUE_MAY;
}
-static int cfq_may_queue(struct request_queue *q, int rw)
+static int cfq_may_queue(struct request_queue *q, int op, int op_flags)
{
struct cfq_data *cfqd = q->elevator->elevator_data;
struct task_struct *tsk = current;
@@ -4302,7 +4311,7 @@ static int cfq_may_queue(struct request_queue *q, int rw)
if (!cic)
return ELV_MQUEUE_MAY;
- cfqq = cic_to_cfqq(cic, rw_is_sync(rw));
+ cfqq = cic_to_cfqq(cic, rw_is_sync(op, op_flags));
if (cfqq) {
cfq_init_prio_data(cfqq, cic);
diff --git a/block/elevator.c b/block/elevator.c
index c3555c9..f6279ca 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -366,8 +366,8 @@ void elv_dispatch_sort(struct request_queue *q, struct request *rq)
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
- if ((rq->cmd_flags & REQ_DISCARD) !=
- (pos->cmd_flags & REQ_DISCARD))
+ if ((rq->op == REQ_OP_DISCARD) !=
+ (pos->op == REQ_OP_DISCARD))
break;
if (rq_data_dir(rq) != rq_data_dir(pos))
break;
@@ -717,12 +717,12 @@ void elv_put_request(struct request_queue *q, struct request *rq)
e->type->ops.elevator_put_req_fn(rq);
}
-int elv_may_queue(struct request_queue *q, int rw)
+int elv_may_queue(struct request_queue *q, int op, int op_flags)
{
struct elevator_queue *e = q->elevator;
if (e->type->ops.elevator_may_queue_fn)
- return e->type->ops.elevator_may_queue_fn(q, rw);
+ return e->type->ops.elevator_may_queue_fn(q, op, op_flags);
return ELV_MQUEUE_MAY;
}
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index c02e669..9071feb 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -590,25 +590,26 @@ static inline void blkg_rwstat_exit(struct blkg_rwstat *rwstat)
/**
* blkg_rwstat_add - add a value to a blkg_rwstat
* @rwstat: target blkg_rwstat
- * @rw: mask of REQ_{WRITE|SYNC}
+ * @op: REQ_OP
+ * @op_flags: rq_flag_bits
* @val: value to add
*
* Add @val to @rwstat. The counters are chosen according to @rw. The
* caller is responsible for synchronizing calls to this function.
*/
static inline void blkg_rwstat_add(struct blkg_rwstat *rwstat,
- int rw, uint64_t val)
+ int op, int op_flags, uint64_t val)
{
struct percpu_counter *cnt;
- if (rw & REQ_WRITE)
+ if (op_is_write(op))
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_WRITE];
else
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_READ];
__percpu_counter_add(cnt, val, BLKG_STAT_CPU_BATCH);
- if (rw & REQ_SYNC)
+ if (op_flags & REQ_SYNC)
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_SYNC];
else
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_ASYNC];
@@ -713,9 +714,9 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
if (!throtl) {
blkg = blkg ?: q->root_blkg;
- blkg_rwstat_add(&blkg->stat_bytes, bio->bi_rw,
+ blkg_rwstat_add(&blkg->stat_bytes, bio->bi_op, bio->bi_rw,
bio->bi_iter.bi_size);
- blkg_rwstat_add(&blkg->stat_ios, bio->bi_rw, 1);
+ blkg_rwstat_add(&blkg->stat_ios, bio->bi_op, bio->bi_rw, 1);
}
rcu_read_unlock();
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d4d3b06..1c01a41 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -596,7 +596,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
#define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist)
-#define rq_data_dir(rq) ((int)((rq)->cmd_flags & 1))
+#define rq_data_dir(rq) (op_is_write(rq->op) ? WRITE : READ)
/*
* Driver can handle struct request, if it either has an old style
@@ -615,14 +615,14 @@ static inline unsigned int blk_queue_cluster(struct request_queue *q)
/*
* We regard a request as sync, if either a read or a sync write
*/
-static inline bool rw_is_sync(unsigned int rw_flags)
+static inline bool rw_is_sync(int op, unsigned int rw_flags)
{
- return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC);
+ return op == REQ_OP_READ || (rw_flags & REQ_SYNC);
}
static inline bool rq_is_sync(struct request *rq)
{
- return rw_is_sync(rq->cmd_flags);
+ return rw_is_sync(rq->op, rq->cmd_flags);
}
static inline bool blk_rl_full(struct request_list *rl, bool sync)
@@ -657,16 +657,16 @@ static inline bool rq_mergeable(struct request *rq)
return true;
}
-static inline bool blk_check_merge_flags(unsigned int flags1,
- unsigned int flags2)
+static inline bool blk_check_merge_flags(unsigned int flags1, unsigned int op1,
+ unsigned int flags2, unsigned int op2)
{
- if ((flags1 & REQ_DISCARD) != (flags2 & REQ_DISCARD))
+ if ((op1 == REQ_OP_DISCARD) != (op2 == REQ_OP_DISCARD))
return false;
if ((flags1 & REQ_SECURE) != (flags2 & REQ_SECURE))
return false;
- if ((flags1 & REQ_WRITE_SAME) != (flags2 & REQ_WRITE_SAME))
+ if ((op1 == REQ_OP_WRITE_SAME) != (op2 == REQ_OP_WRITE_SAME))
return false;
return true;
@@ -867,12 +867,12 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
}
static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
- unsigned int cmd_flags)
+ int op)
{
- if (unlikely(cmd_flags & REQ_DISCARD))
+ if (unlikely(op == REQ_OP_DISCARD))
return min(q->limits.max_discard_sectors, UINT_MAX >> 9);
- if (unlikely(cmd_flags & REQ_WRITE_SAME))
+ if (unlikely(op == REQ_OP_WRITE_SAME))
return q->limits.max_write_same_sectors;
return q->limits.max_sectors;
@@ -899,11 +899,11 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq)
if (unlikely(rq->cmd_type == REQ_TYPE_BLOCK_PC))
return q->limits.max_hw_sectors;
- if (!q->limits.chunk_sectors || (rq->cmd_flags & REQ_DISCARD))
- return blk_queue_get_max_sectors(q, rq->cmd_flags);
+ if (!q->limits.chunk_sectors || (rq->op == REQ_OP_DISCARD))
+ return blk_queue_get_max_sectors(q, rq->op);
return min(blk_max_size_offset(q, blk_rq_pos(rq)),
- blk_queue_get_max_sectors(q, rq->cmd_flags));
+ blk_queue_get_max_sectors(q, rq->op));
}
static inline unsigned int blk_rq_count_bios(struct request *rq)
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 638b324..953d286 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -26,7 +26,7 @@ typedef int (elevator_dispatch_fn) (struct request_queue *, int);
typedef void (elevator_add_req_fn) (struct request_queue *, struct request *);
typedef struct request *(elevator_request_list_fn) (struct request_queue *, struct request *);
typedef void (elevator_completed_req_fn) (struct request_queue *, struct request *);
-typedef int (elevator_may_queue_fn) (struct request_queue *, int);
+typedef int (elevator_may_queue_fn) (struct request_queue *, int, int);
typedef void (elevator_init_icq_fn) (struct io_cq *);
typedef void (elevator_exit_icq_fn) (struct io_cq *);
@@ -134,7 +134,7 @@ extern struct request *elv_former_request(struct request_queue *, struct request
extern struct request *elv_latter_request(struct request_queue *, struct request *);
extern int elv_register_queue(struct request_queue *q);
extern void elv_unregister_queue(struct request_queue *q);
-extern int elv_may_queue(struct request_queue *, int);
+extern int elv_may_queue(struct request_queue *, int, int);
extern void elv_completed_request(struct request_queue *, struct request *);
extern int elv_set_request(struct request_queue *q, struct request *rq,
struct bio *bio, gfp_t gfp_mask);
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | kbuild test robot <lkp@intel.com> |
|---|---|
| Date | 2016-02-24 23:20 +0100 |
| Subject | Re: [PATCH 26/35] block: set op to REQ_OP |
| Message-ID | <r5PWO-2Ff-21@gated-at.bofh.it> |
| In reply to | #1342391 |
[Multipart message — attachments visible in raw view] — view raw
Hi Mike,
[auto build test WARNING on next-20160224]
[cannot apply to dm/for-next v4.5-rc5 v4.5-rc4 v4.5-rc3 v4.5-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/mchristi-redhat-com/separate-operations-from-flags-in-the-bio-request-structs/20160225-041726
reproduce: make htmldocs
All warnings (new ones prefixed by >>):
lib/crc32.c:148: warning: No description found for parameter 'tab)[256]'
lib/crc32.c:148: warning: Excess function parameter 'tab' description in 'crc32_le_generic'
lib/crc32.c:293: warning: No description found for parameter 'tab)[256]'
lib/crc32.c:293: warning: Excess function parameter 'tab' description in 'crc32_be_generic'
lib/crc32.c:1: warning: no structured comments found
>> block/blk-core.c:1248: warning: No description found for parameter 'op'
>> block/blk-core.c:1248: warning: No description found for parameter 'op'
vim +/op +1248 block/blk-core.c
da8303c6 block/blk-core.c Tejun Heo 2011-10-19 1232 * @q: request_queue to allocate request from
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1233 * op: REQ_OP_READ/REQ_OP_WRITE
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1234 * @op_flags: rq_flag_bits
da8303c6 block/blk-core.c Tejun Heo 2011-10-19 1235 * @bio: bio to allocate request for (can be %NULL)
a06e05e6 block/blk-core.c Tejun Heo 2012-06-04 1236 * @gfp_mask: allocation mask
da8303c6 block/blk-core.c Tejun Heo 2011-10-19 1237 *
d0164adc block/blk-core.c Mel Gorman 2015-11-06 1238 * Get a free request from @q. If %__GFP_DIRECT_RECLAIM is set in @gfp_mask,
d0164adc block/blk-core.c Mel Gorman 2015-11-06 1239 * this function keeps retrying under memory pressure and fails iff @q is dead.
d6344532 drivers/block/ll_rw_blk.c Nick Piggin 2005-06-28 1240 *
da3dae54 block/blk-core.c Masanari Iida 2014-09-09 1241 * Must be called with @q->queue_lock held and,
a492f075 block/blk-core.c Joe Lawrence 2014-08-28 1242 * Returns ERR_PTR on failure, with @q->queue_lock held.
a492f075 block/blk-core.c Joe Lawrence 2014-08-28 1243 * Returns request pointer on success, with @q->queue_lock *not held*.
^1da177e drivers/block/ll_rw_blk.c Linus Torvalds 2005-04-16 1244 */
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1245 static struct request *get_request(struct request_queue *q, int op,
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1246 int op_flags, struct bio *bio,
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1247 gfp_t gfp_mask)
^1da177e drivers/block/ll_rw_blk.c Linus Torvalds 2005-04-16 @1248 {
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1249 const bool is_sync = rw_is_sync(op, op_flags) != 0;
450991bc drivers/block/ll_rw_blk.c Nick Piggin 2005-06-28 1250 DEFINE_WAIT(wait);
a051661c block/blk-core.c Tejun Heo 2012-06-26 1251 struct request_list *rl;
a06e05e6 block/blk-core.c Tejun Heo 2012-06-04 1252 struct request *rq;
a051661c block/blk-core.c Tejun Heo 2012-06-26 1253
a051661c block/blk-core.c Tejun Heo 2012-06-26 1254 rl = blk_get_rl(q, bio); /* transferred to @rq on success */
a06e05e6 block/blk-core.c Tejun Heo 2012-06-04 1255 retry:
3cbf3506 block/blk-core.c Mike Christie 2016-02-24 1256 rq = __get_request(rl, op, op_flags, bio, gfp_mask);
:::::: The code at line 1248 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 32/35] block: shrink bi_rw and bi_op |
| Message-ID | <r5NLl-PN-27@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
There is no need for bi_op/op and bi_rw to be so large
now, so this patch shrinks them.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
block/blk-core.c | 2 +-
drivers/md/dm-flakey.c | 2 +-
drivers/md/raid5.c | 13 +++++++------
fs/btrfs/check-integrity.c | 4 ++--
fs/btrfs/inode.c | 2 +-
include/linux/bio.h | 13 ++-----------
include/linux/blk_types.h | 11 +++--------
include/linux/blkdev.h | 2 +-
8 files changed, 18 insertions(+), 31 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index bba1a69..5436c19 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1853,7 +1853,7 @@ static void handle_bad_sector(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_INFO "attempt to access beyond end of device\n");
- printk(KERN_INFO "%s: rw=%d,%ld, want=%Lu, limit=%Lu\n",
+ printk(KERN_INFO "%s: rw=%d,%u, want=%Lu, limit=%Lu\n",
bdevname(bio->bi_bdev, b),
bio->bi_op, bio->bi_rw,
(unsigned long long)bio_end_sector(bio),
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index b7341de..29b99fb 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -266,7 +266,7 @@ static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
data[fc->corrupt_bio_byte - 1] = fc->corrupt_bio_value;
DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
- "(rw=%c bi_rw=%lu bi_sector=%llu cur_bytes=%u)\n",
+ "(rw=%c bi_rw=%u bi_sector=%llu cur_bytes=%u)\n",
bio, fc->corrupt_bio_value, fc->corrupt_bio_byte,
(bio_data_dir(bio) == WRITE) ? 'w' : 'r', bio->bi_rw,
(unsigned long long)bio->bi_iter.bi_sector, bio_bytes);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 0c53ca2..e9bc323 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1015,9 +1015,9 @@ again:
: raid5_end_read_request;
bi->bi_private = sh;
- pr_debug("%s: for %llu schedule op %ld on disc %d\n",
+ pr_debug("%s: for %llu schedule op %d,%u on disc %d\n",
__func__, (unsigned long long)sh->sector,
- bi->bi_rw, i);
+ bi->bi_op, bi->bi_rw, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1067,10 +1067,10 @@ again:
rbi->bi_end_io = raid5_end_write_request;
rbi->bi_private = sh;
- pr_debug("%s: for %llu schedule op %ld on "
+ pr_debug("%s: for %llu schedule op %d,%u on "
"replacement disc %d\n",
__func__, (unsigned long long)sh->sector,
- rbi->bi_rw, i);
+ rbi->bi_op, rbi->bi_rw, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1102,8 +1102,9 @@ again:
if (!rdev && !rrdev) {
if (op_is_write(op))
set_bit(STRIPE_DEGRADED, &sh->state);
- pr_debug("skip op %ld on disc %d for sector %llu\n",
- bi->bi_rw, i, (unsigned long long)sh->sector);
+ pr_debug("skip op %d,%u on disc %d for sector %llu\n",
+ bi->bi_op, bi->bi_rw, i,
+ (unsigned long long)sh->sector);
clear_bit(R5_LOCKED, &sh->dev[i].flags);
set_bit(STRIPE_HANDLE, &sh->state);
}
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index d95c323..9dc4394 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2941,7 +2941,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=%d,0x%lx, bi_vcnt=%u,"
+ "submit_bio(rw=%d,0x%x, bi_vcnt=%u,"
" bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
bio->bi_op, bio->bi_rw, bio->bi_vcnt,
(unsigned long long)bio->bi_iter.bi_sector,
@@ -2984,7 +2984,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=%d,0x%lx FLUSH, bdev=%p)\n",
+ "submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n",
bio->bi_op, bio->bi_rw, bio->bi_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a3132d6..dbec3cf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8132,7 +8132,7 @@ static void btrfs_end_dio_bio(struct bio *bio)
if (err)
btrfs_warn(BTRFS_I(dip->inode)->root->fs_info,
- "direct IO failed ino %llu rw %d,%lu sector %#Lx len %u err no %d",
+ "direct IO failed ino %llu rw %d,0x%x sector %#Lx len %u err no %d",
btrfs_ino(dip->inode), bio->bi_op, bio->bi_rw,
(unsigned long long)bio->bi_iter.bi_sector,
bio->bi_iter.bi_size, err);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 1e4b3b5..c91afc1 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -44,18 +44,9 @@
#define BIO_MAX_SIZE (BIO_MAX_PAGES << PAGE_CACHE_SHIFT)
#define BIO_MAX_SECTORS (BIO_MAX_SIZE >> 9)
-/*
- * upper 16 bits of bi_rw define the io priority of this bio
- */
-#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS)
-#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT)
+#define bio_prio(bio) (bio)->bi_ioprio
#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio))
-
-#define bio_set_prio(bio, prio) do { \
- WARN_ON(prio >= (1 << IOPRIO_BITS)); \
- (bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1); \
- (bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT); \
-} while (0)
+#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)
/*
* various member access, note that bio_data should of course not be used
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b4251ed..498f395 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -48,14 +48,9 @@ struct bio {
struct block_device *bi_bdev;
unsigned int bi_flags; /* status, command, etc */
int bi_error;
- unsigned long bi_rw; /* bottom bits rq_flags_bits
- * top bits priority
- */
- /*
- * this will be a u8 in the next patches and bi_rw can be shrunk to
- * a u32. For compat in these transistional patches op is a int here.
- */
- int bi_op; /* REQ_OP */
+ unsigned int bi_rw; /* rq_flag_bits */
+ unsigned short bi_ioprio;
+ u8 bi_op; /* REQ_OP */
struct bvec_iter bi_iter;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1c01a41..97079eb 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -96,7 +96,7 @@ struct request {
struct request_queue *q;
struct blk_mq_ctx *mq_ctx;
- int op;
+ u8 op;
u64 cmd_flags;
unsigned cmd_type;
unsigned long atomic_flags;
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 19/35] dm: set bi_op to REQ_OP |
| Message-ID | <r5NLl-PN-25@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has dm set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
I did some basic dm tests, but I think this patch should
be considered compile tested only. I have not tested all the
dm targets and I did not stress every code path I have touched.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/dm-bufio.c | 8 +++---
drivers/md/dm-crypt.c | 1 +
drivers/md/dm-io.c | 57 ++++++++++++++++++++++-------------------
drivers/md/dm-kcopyd.c | 25 +++++++++---------
drivers/md/dm-log-writes.c | 6 ++---
drivers/md/dm-log.c | 5 ++--
drivers/md/dm-raid1.c | 11 +++++---
drivers/md/dm-snap-persistent.c | 24 +++++++++--------
drivers/md/dm-thin.c | 7 ++---
drivers/md/dm.c | 1 +
include/linux/dm-io.h | 3 ++-
11 files changed, 82 insertions(+), 66 deletions(-)
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 9d3ee7f..b6055f2 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -574,7 +574,8 @@ static void use_dmio(struct dm_buffer *b, int rw, sector_t block,
{
int r;
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = rw,
+ .bi_op_flags = 0,
.notify.fn = dmio_complete,
.notify.context = b,
.client = b->c->dm_io,
@@ -634,7 +635,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block,
* the dm_buffer's inline bio is local to bufio.
*/
b->bio.bi_private = end_io;
- b->bio.bi_rw = rw;
+ b->bio.bi_op = rw;
/*
* We assume that if len >= PAGE_SIZE ptr is page-aligned.
@@ -1327,7 +1328,8 @@ EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = c->dm_io,
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 4f3cb35..70fbf11 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1136,6 +1136,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
+ clone->bi_op = io->base_bio->bi_op;
clone->bi_rw = io->base_bio->bi_rw;
}
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 50f17e3..0f723ca 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -278,8 +278,9 @@ static void km_dp_init(struct dpages *dp, void *data)
/*-----------------------------------------------------------------
* IO routines that accept a list of pages.
*---------------------------------------------------------------*/
-static void do_region(int rw, unsigned region, struct dm_io_region *where,
- struct dpages *dp, struct io *io)
+static void do_region(int op, int op_flags, unsigned region,
+ struct dm_io_region *where, struct dpages *dp,
+ struct io *io)
{
struct bio *bio;
struct page *page;
@@ -295,24 +296,25 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
/*
* Reject unsupported discard and write same requests.
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
special_cmd_max_sectors = q->limits.max_discard_sectors;
- else if (rw & REQ_WRITE_SAME)
+ else if (op == REQ_OP_WRITE_SAME)
special_cmd_max_sectors = q->limits.max_write_same_sectors;
- if ((rw & (REQ_DISCARD | REQ_WRITE_SAME)) && special_cmd_max_sectors == 0) {
+ if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_SAME) &&
+ special_cmd_max_sectors == 0) {
dec_count(io, region, -EOPNOTSUPP);
return;
}
/*
- * where->count may be zero if rw holds a flush and we need to
+ * where->count may be zero if op holds a flush and we need to
* send a zero-sized flush.
*/
do {
/*
* Allocate a suitably sized-bio.
*/
- if ((rw & REQ_DISCARD) || (rw & REQ_WRITE_SAME))
+ if ((op == REQ_OP_DISCARD) || (op == REQ_OP_WRITE_SAME))
num_bvecs = 1;
else
num_bvecs = min_t(int, BIO_MAX_PAGES,
@@ -322,14 +324,15 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio->bi_bdev = where->bdev;
bio->bi_end_io = endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
store_io_and_region_in_bio(bio, io, region);
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining);
bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;
remaining -= num_sectors;
- } else if (rw & REQ_WRITE_SAME) {
+ } else if (op == REQ_OP_WRITE_SAME) {
/*
* WRITE SAME only uses a single page.
*/
@@ -360,7 +363,7 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
} while (remaining);
}
-static void dispatch_io(int rw, unsigned int num_regions,
+static void dispatch_io(int op, int op_flags, unsigned int num_regions,
struct dm_io_region *where, struct dpages *dp,
struct io *io, int sync)
{
@@ -370,7 +373,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
- rw |= REQ_SYNC;
+ op_flags |= REQ_SYNC;
/*
* For multiple regions we need to be careful to rewind
@@ -378,8 +381,8 @@ static void dispatch_io(int rw, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
- if (where[i].count || (rw & REQ_FLUSH))
- do_region(rw, i, where + i, dp, io);
+ if (where[i].count || (op_flags & REQ_FLUSH))
+ do_region(op, op_flags, i, where + i, dp, io);
}
/*
@@ -403,13 +406,13 @@ static void sync_io_complete(unsigned long error, void *context)
}
static int sync_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- unsigned long *error_bits)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, unsigned long *error_bits)
{
struct io *io;
struct sync_io sio;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
return -EIO;
}
@@ -426,7 +429,7 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 1);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 1);
wait_for_completion_io(&sio.wait);
@@ -437,12 +440,12 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
}
static int async_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- io_notify_fn fn, void *context)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, io_notify_fn fn, void *context)
{
struct io *io;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
fn(1, context);
return -EIO;
@@ -458,7 +461,7 @@ static int async_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 0);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 0);
return 0;
}
@@ -481,7 +484,7 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp,
case DM_IO_VMA:
flush_kernel_vmap_range(io_req->mem.ptr.vma, size);
- if ((io_req->bi_rw & RW_MASK) == READ) {
+ if (io_req->bi_op == REQ_OP_READ) {
dp->vma_invalidate_address = io_req->mem.ptr.vma;
dp->vma_invalidate_size = size;
}
@@ -519,10 +522,12 @@ int dm_io(struct dm_io_request *io_req, unsigned num_regions,
if (!io_req->notify.fn)
return sync_io(io_req->client, num_regions, where,
- io_req->bi_rw, &dp, sync_error_bits);
+ io_req->bi_op, io_req->bi_op_flags, &dp,
+ sync_error_bits);
- return async_io(io_req->client, num_regions, where, io_req->bi_rw,
- &dp, io_req->notify.fn, io_req->notify.context);
+ return async_io(io_req->client, num_regions, where, io_req->bi_op,
+ io_req->bi_op_flags, &dp, io_req->notify.fn,
+ io_req->notify.context);
}
EXPORT_SYMBOL(dm_io);
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 1452ed9..4182bc7d 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -465,10 +465,10 @@ static void complete_io(unsigned long error, void *context)
io_job_finish(kc->throttle);
if (error) {
- if (job->rw & WRITE)
- job->write_err |= error;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err |= error;
if (!test_bit(DM_KCOPYD_IGNORE_ERROR, &job->flags)) {
push(&kc->complete_jobs, job);
@@ -477,13 +477,11 @@ static void complete_io(unsigned long error, void *context)
}
}
- if (job->rw & WRITE)
- push(&kc->complete_jobs, job);
-
- else {
+ if (job->rw == READ) {
job->rw = WRITE;
push(&kc->io_jobs, job);
- }
+ } else
+ push(&kc->complete_jobs, job);
wake(kc);
}
@@ -496,7 +494,8 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
- .bi_rw = job->rw,
+ .bi_op = job->rw,
+ .bi_op_flags = 0,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = 0,
@@ -550,10 +549,10 @@ static int process_jobs(struct list_head *jobs, struct dm_kcopyd_client *kc,
if (r < 0) {
/* error this rogue job */
- if (job->rw & WRITE)
- job->write_err = (unsigned long) -1L;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err = (unsigned long) -1L;
push(&kc->complete_jobs, job);
break;
}
@@ -734,7 +733,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
/*
* Use WRITE SAME to optimize zeroing if all dests support it.
*/
- job->rw = WRITE | REQ_WRITE_SAME;
+ job->rw = REQ_OP_WRITE_SAME;
for (i = 0; i < job->num_dests; i++)
if (!bdev_write_same(job->dests[i].bdev)) {
job->rw = WRITE;
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index addcc4b..27630c5 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -205,7 +205,7 @@ static int write_metadata(struct log_writes_c *lc, void *entry,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
page = alloc_page(GFP_KERNEL);
if (!page) {
@@ -270,7 +270,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
for (i = 0; i < block->vec_cnt; i++) {
/*
@@ -292,7 +292,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = bio_add_page(bio, block->vecs[i].bv_page,
block->vecs[i].bv_len, 0);
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 627d191..4ca2d1d 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -293,7 +293,7 @@ static void header_from_disk(struct log_header_core *core, struct log_header_dis
static int rw_header(struct log_c *lc, int rw)
{
- lc->io_req.bi_rw = rw;
+ lc->io_req.bi_op = rw;
return dm_io(&lc->io_req, 1, &lc->header_location, NULL);
}
@@ -306,7 +306,8 @@ static int flush_header(struct log_c *lc)
.count = 0,
};
- lc->io_req.bi_rw = WRITE_FLUSH;
+ lc->io_req.bi_op = REQ_OP_WRITE;
+ lc->io_req.bi_op_flags = WRITE_FLUSH;
return dm_io(&lc->io_req, 1, &null_location, NULL);
}
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index b3ccf1e..8a86bc3 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -260,7 +260,8 @@ static int mirror_flush(struct dm_target *ti)
struct dm_io_region io[ms->nr_mirrors];
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = ms->io_client,
@@ -541,7 +542,8 @@ static void read_async_bio(struct mirror *m, struct bio *bio)
{
struct dm_io_region io;
struct dm_io_request io_req = {
- .bi_rw = READ,
+ .bi_op = REQ_OP_READ,
+ .bi_op_flags = 0,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = read_callback,
@@ -654,7 +656,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
struct dm_io_region io[ms->nr_mirrors], *dest = io;
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE | (bio->bi_rw & WRITE_FLUSH_FUA),
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = bio->bi_rw & WRITE_FLUSH_FUA,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = write_callback,
@@ -663,7 +666,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
};
if (bio->bi_rw & REQ_DISCARD) {
- io_req.bi_rw |= REQ_DISCARD;
+ io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
}
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 4d39093..b8cf956 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -226,8 +226,8 @@ static void do_metadata(struct work_struct *work)
/*
* Read or write a chunk aligned and sized block of data from a device.
*/
-static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
- int metadata)
+static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int op,
+ int op_flags, int metadata)
{
struct dm_io_region where = {
.bdev = dm_snap_cow(ps->store->snap)->bdev,
@@ -235,7 +235,8 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
.count = ps->store->chunk_size,
};
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = op,
+ .bi_op_flags = op_flags,
.mem.type = DM_IO_VMA,
.mem.ptr.vma = area,
.client = ps->io_client,
@@ -281,14 +282,14 @@ static void skip_metadata(struct pstore *ps)
* Read or write a metadata area. Remembering to skip the first
* chunk which holds the header.
*/
-static int area_io(struct pstore *ps, int rw)
+static int area_io(struct pstore *ps, int op, int op_flags)
{
int r;
chunk_t chunk;
chunk = area_location(ps, ps->current_area);
- r = chunk_io(ps, ps->area, chunk, rw, 0);
+ r = chunk_io(ps, ps->area, chunk, op, op_flags, 0);
if (r)
return r;
@@ -302,7 +303,8 @@ static void zero_memory_area(struct pstore *ps)
static int zero_disk_area(struct pstore *ps, chunk_t area)
{
- return chunk_io(ps, ps->zero_area, area_location(ps, area), WRITE, 0);
+ return chunk_io(ps, ps->zero_area, area_location(ps, area),
+ REQ_OP_WRITE, 0, 0);
}
static int read_header(struct pstore *ps, int *new_snapshot)
@@ -334,7 +336,7 @@ static int read_header(struct pstore *ps, int *new_snapshot)
if (r)
return r;
- r = chunk_io(ps, ps->header_area, 0, READ, 1);
+ r = chunk_io(ps, ps->header_area, 0, REQ_OP_READ, 0, 1);
if (r)
goto bad;
@@ -395,7 +397,7 @@ static int write_header(struct pstore *ps)
dh->version = cpu_to_le32(ps->version);
dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
- return chunk_io(ps, ps->header_area, 0, WRITE, 1);
+ return chunk_io(ps, ps->header_area, 0, REQ_OP_WRITE, 0, 1);
}
/*
@@ -739,7 +741,7 @@ static void persistent_commit_exception(struct dm_exception_store *store,
/*
* Commit exceptions to disk.
*/
- if (ps->valid && area_io(ps, WRITE_FLUSH_FUA))
+ if (ps->valid && area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA))
ps->valid = 0;
/*
@@ -779,7 +781,7 @@ static int persistent_prepare_merge(struct dm_exception_store *store,
return 0;
ps->current_area--;
- r = area_io(ps, READ);
+ r = area_io(ps, REQ_OP_READ, 0);
if (r < 0)
return r;
ps->current_committed = ps->exceptions_per_area;
@@ -816,7 +818,7 @@ static int persistent_commit_merge(struct dm_exception_store *store,
for (i = 0; i < nr_merged; i++)
clear_exception(ps, ps->current_committed - 1 - i);
- r = area_io(ps, WRITE_FLUSH_FUA);
+ r = area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA);
if (r < 0)
return r;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index e39ad11..6e204e0 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -338,7 +338,7 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
struct bio *parent_bio)
{
struct request_queue *q = bdev_get_queue(bdev);
- int type = REQ_WRITE | REQ_DISCARD;
+ int op_flags = 0;
struct bio *bio;
if (!q || !nr_sects)
@@ -350,7 +350,7 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
if (flags & BLKDEV_DISCARD_SECURE) {
if (!blk_queue_secdiscard(q))
return -EOPNOTSUPP;
- type |= REQ_SECURE;
+ op_flags |= REQ_SECURE;
}
/*
@@ -365,7 +365,8 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio->bi_iter.bi_size = nr_sects << 9;
- bio->bi_rw = type;
+ bio->bi_op = REQ_OP_DISCARD;
+ bio->bi_rw = op_flags;
submit_bio(bio);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 503988f..fe03b26 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2399,6 +2399,7 @@ static struct mapped_device *alloc_dev(int minor)
bio_init(&md->flush_bio);
md->flush_bio.bi_bdev = md->bdev;
+ md->flush_bio.bi_op = REQ_OP_WRITE;
md->flush_bio.bi_rw = WRITE_FLUSH;
dm_stats_init(&md->stats);
diff --git a/include/linux/dm-io.h b/include/linux/dm-io.h
index a68cbe5..b91b023 100644
--- a/include/linux/dm-io.h
+++ b/include/linux/dm-io.h
@@ -57,7 +57,8 @@ struct dm_io_notify {
*/
struct dm_io_client;
struct dm_io_request {
- int bi_rw; /* READ|WRITE - not READA */
+ int bi_op; /* REQ_OP */
+ int bi_op_flags; /* rq_flag_bits */
struct dm_io_memory mem; /* Memory to use for io */
struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
struct dm_io_client *client; /* Client memory handler */
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 33/35] block, drivers: add REQ_OP_FLUSH operation |
| Message-ID | <r5NLl-PN-29@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This adds a REQ_OP_FLUSH operation that is sent to request_fn
based drivers by the block layer's flush code, instead of
sending requests with the request->cmd_flags REQ_FLUSH bit set.
For the following 3 flush related patches, I have not tested
every driver. I have only tested scsi with xfs and btrfs.
v2.
1. Fix kbuild failures. Forgot to update ubd driver.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
Documentation/block/writeback_cache_control.txt | 6 +++---
arch/um/drivers/ubd_kern.c | 2 +-
block/blk-flush.c | 6 +++---
drivers/block/loop.c | 4 ++--
drivers/block/nbd.c | 2 +-
drivers/block/osdblk.c | 2 +-
drivers/block/ps3disk.c | 4 ++--
drivers/block/skd_main.c | 2 +-
drivers/block/virtio_blk.c | 2 +-
drivers/block/xen-blkfront.c | 8 ++++----
drivers/ide/ide-disk.c | 2 +-
drivers/md/dm.c | 2 +-
drivers/mmc/card/block.c | 5 ++---
drivers/mmc/card/queue.h | 2 +-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/pci.c | 2 +-
drivers/scsi/sd.c | 7 +++----
include/linux/blk_types.h | 1 +
include/linux/blkdev.h | 3 +++
kernel/trace/blktrace.c | 5 ++++-
20 files changed, 37 insertions(+), 32 deletions(-)
diff --git a/Documentation/block/writeback_cache_control.txt b/Documentation/block/writeback_cache_control.txt
index 83407d3..ea5550f 100644
--- a/Documentation/block/writeback_cache_control.txt
+++ b/Documentation/block/writeback_cache_control.txt
@@ -73,9 +73,9 @@ doing:
blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
-and handle empty REQ_FLUSH requests in its prep_fn/request_fn. Note that
+and handle empty REQ_OP_FLUSH requests in its prep_fn/request_fn. Note that
REQ_FLUSH requests with a payload are automatically turned into a sequence
-of an empty REQ_FLUSH request followed by the actual write by the block
+of an empty REQ_OP_FLUSH request followed by the actual write by the block
layer. For devices that also support the FUA bit the block layer needs
to be told to pass through the REQ_FUA bit using:
@@ -83,4 +83,4 @@ to be told to pass through the REQ_FUA bit using:
and the driver must handle write requests that have the REQ_FUA bit set
in prep_fn/request_fn. If the FUA bit is not natively supported the block
-layer turns it into an empty REQ_FLUSH request after the actual write.
+layer turns it into an empty REQ_OP_FLUSH request after the actual write.
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 39ba207..a7dc382 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1286,7 +1286,7 @@ static void do_ubd_request(struct request_queue *q)
req = dev->request;
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
io_req = kmalloc(sizeof(struct io_thread_req),
GFP_ATOMIC);
if (io_req == NULL) {
diff --git a/block/blk-flush.c b/block/blk-flush.c
index e01d3ac..070d7c7 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -29,7 +29,7 @@
* The actual execution of flush is double buffered. Whenever a request
* needs to execute PRE or POSTFLUSH, it queues at
* fq->flush_queue[fq->flush_pending_idx]. Once certain criteria are met, a
- * flush is issued and the pending_idx is toggled. When the flush
+ * REQ_OP_FLUSH is issued and the pending_idx is toggled. When the flush
* completes, all the requests which were pending are proceeded to the next
* step. This allows arbitrary merging of different types of FLUSH/FUA
* requests.
@@ -329,8 +329,8 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq)
}
flush_rq->cmd_type = REQ_TYPE_FS;
- flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
- flush_rq->op = REQ_OP_WRITE;
+ flush_rq->cmd_flags = REQ_SYNC | REQ_NOIDLE | REQ_FLUSH_SEQ;
+ flush_rq->op = REQ_OP_FLUSH;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1afc03c..a3d1293 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -536,7 +536,7 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq)
pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
if (op_is_write(rq->op)) {
- if (rq->cmd_flags & REQ_FLUSH)
+ if (rq->op == REQ_OP_FLUSH)
ret = lo_req_flush(lo, rq);
else if (rq->op == REQ_OP_DISCARD)
ret = lo_discard(lo, rq, pos);
@@ -1653,7 +1653,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && (!(cmd->rq->cmd_flags & REQ_FLUSH) ||
+ if (lo->use_dio && (cmd->rq->op != REQ_OP_FLUSH ||
cmd->rq->op == REQ_OP_DISCARD))
cmd->use_aio = true;
else
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index dd8f3e9..3b4be71 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -244,7 +244,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
type = NBD_CMD_DISC;
else if (req->op == REQ_OP_DISCARD)
type = NBD_CMD_TRIM;
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req->op == REQ_OP_FLUSH)
type = NBD_CMD_FLUSH;
else if (rq_data_dir(req) == WRITE)
type = NBD_CMD_WRITE;
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 1b709a4..3f8a0a0 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -321,7 +321,7 @@ static void osdblk_rq_fn(struct request_queue *q)
* driver-specific, etc.
*/
- do_flush = rq->cmd_flags & REQ_FLUSH;
+ do_flush = (rq->op == REQ_OP_FLUSH);
do_write = (rq_data_dir(rq) == WRITE);
if (!do_flush) { /* osd_flush does not use a bio */
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index c120d70..95c524b 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -196,7 +196,7 @@ static void ps3disk_do_request(struct ps3_storage_device *dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
while ((req = blk_fetch_request(q))) {
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
if (ps3disk_submit_flush_request(dev, req))
break;
} else if (req->cmd_type == REQ_TYPE_FS) {
@@ -256,7 +256,7 @@ static irqreturn_t ps3disk_interrupt(int irq, void *data)
return IRQ_HANDLED;
}
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
read = 0;
op = "flush";
} else {
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index f89a0c8..a15cc2e 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -624,7 +624,7 @@ static void skd_request_fn(struct request_queue *q)
count = blk_rq_sectors(req);
data_dir = rq_data_dir(req);
- if (req->cmd_flags & REQ_FLUSH)
+ if (req->op == REQ_OP_FLUSH)
flush++;
if (req->cmd_flags & REQ_FUA)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 6ca3549..c6d3bc2 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -172,7 +172,7 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
vbr->req = req;
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_FLUSH);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 34e8f1a..55f795d 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -741,7 +741,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
* The indirect operation can only be a BLKIF_OP_READ or
* BLKIF_OP_WRITE
*/
- BUG_ON(req->cmd_flags & (REQ_FLUSH | REQ_FUA));
+ BUG_ON(req->op == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA);
ring_req->operation = BLKIF_OP_INDIRECT;
ring_req->u.indirect.indirect_op = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
@@ -753,7 +753,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
ring_req->u.rw.handle = info->handle;
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
- if (req->cmd_flags & (REQ_FLUSH | REQ_FUA)) {
+ if (req->op == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA) {
/*
* Ideally we can do an unordered flush-to-disk.
* In case the backend onlysupports barriers, use that.
@@ -863,7 +863,7 @@ static inline bool blkif_request_flush_invalid(struct request *req,
struct blkfront_info *info)
{
return ((req->cmd_type != REQ_TYPE_FS) ||
- ((req->cmd_flags & REQ_FLUSH) &&
+ ((req->op == REQ_OP_FLUSH) &&
!(info->feature_flush & REQ_FLUSH)) ||
((req->cmd_flags & REQ_FUA) &&
!(info->feature_flush & REQ_FUA)));
@@ -2052,7 +2052,7 @@ static int blkif_recover(struct blkfront_info *info)
/*
* Get the bios in the request so we can re-queue them.
*/
- if (copy[i].request->cmd_flags & REQ_FLUSH ||
+ if (copy[i].request->op == REQ_OP_FLUSH ||
copy[i].request->op == REQ_OP_DISCARD ||
copy[i].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
/*
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 37a8a90..6474ed3 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -431,7 +431,7 @@ static int idedisk_prep_fn(struct request_queue *q, struct request *rq)
ide_drive_t *drive = q->queuedata;
struct ide_cmd *cmd;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (rq->op != REQ_OP_FLUSH)
return BLKPREP_OK;
if (rq->special) {
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 4bac3dc..d54e056 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2158,7 +2158,7 @@ static void dm_request_fn(struct request_queue *q)
/* always use block 0 to find the target for flushes for now */
pos = 0;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (rq->op != REQ_OP_FLUSH)
pos = blk_rq_pos(rq);
if ((dm_request_peeked_before_merge_deadline(md) &&
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1f84a44..dabd152 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1690,7 +1690,7 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req)
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
- if (next->op == REQ_OP_DISCARD || next->cmd_flags & REQ_FLUSH)
+ if (next->op == REQ_OP_DISCARD || next->op == REQ_OP_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
@@ -2115,7 +2115,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
struct mmc_card *card = md->queue.card;
struct mmc_host *host = card->host;
unsigned long flags;
- unsigned int cmd_flags = req ? req->cmd_flags : 0;
if (req && !mq->mqrq_prev->req)
/* claim host only for the first request */
@@ -2139,7 +2138,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
ret = mmc_blk_issue_discard_rq(mq, req);
- } else if (cmd_flags & REQ_FLUSH) {
+ } else if (req && req->op == REQ_OP_FLUSH) {
/* complete ongoing async transfer before issuing flush */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index f166e5b..6c67e4e 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -3,7 +3,7 @@
static inline bool mmc_req_is_special(struct request *req)
{
- return req && (req->cmd_flags & REQ_FLUSH || req->op == REQ_OP_DISCARD);
+ return req && (req->op == REQ_OP_FLUSH || req->op == REQ_OP_DISCARD);
}
struct request;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index b2e0bce..67da1cd 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -87,7 +87,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (req->cmd_type != REQ_TYPE_FS)
return -EIO;
- if (req->cmd_flags & REQ_FLUSH)
+ if (req->op == REQ_OP_FLUSH)
return tr->flush(dev);
if (blk_rq_pos(req) + blk_rq_cur_sectors(req) >
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index da32c93..4800c1d 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -651,7 +651,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
} else {
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
memcpy(&cmnd, req->cmd, sizeof(cmnd));
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req->op == REQ_OP_FLUSH)
nvme_setup_flush(ns, &cmnd);
else
nvme_setup_rw(ns, req, &cmnd);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e8fbd0f..6882ab7 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1143,12 +1143,11 @@ static int sd_init_command(struct scsi_cmnd *cmd)
return sd_setup_discard_cmnd(cmd);
case REQ_OP_WRITE_SAME:
return sd_setup_write_same_cmnd(cmd);
+ case REQ_OP_FLUSH:
+ return sd_setup_flush_cmnd(cmd);
case REQ_OP_READ:
case REQ_OP_WRITE:
- if (rq->cmd_flags & REQ_FLUSH)
- return sd_setup_flush_cmnd(cmd);
- else
- return sd_setup_read_write_cmnd(cmd);
+ return sd_setup_read_write_cmnd(cmd);
default:
BUG();
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 498f395..f9e53ca 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -239,6 +239,7 @@ enum req_op {
REQ_OP_WRITE,
REQ_OP_DISCARD, /* request to discard sectors */
REQ_OP_WRITE_SAME, /* write same block many times */
+ REQ_OP_FLUSH, /* request for cache flush */
};
typedef unsigned int blk_qc_t;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 97079eb..9c36ffc 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -651,6 +651,9 @@ static inline bool rq_mergeable(struct request *rq)
if (rq->cmd_type != REQ_TYPE_FS)
return false;
+ if (rq->op == REQ_OP_FLUSH)
+ return false;
+
if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
return false;
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 4a9ac83..3a54c83 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -223,6 +223,8 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
what |= MASK_TC_BIT(op_flags, FUA);
if (op == REQ_OP_DISCARD)
what |= BLK_TC_ACT(BLK_TC_DISCARD);
+ if (op == REQ_OP_FLUSH)
+ what |= BLK_TC_ACT(BLK_TC_FLUSH);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -1775,7 +1777,8 @@ void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
- if (rw & REQ_FLUSH)
+ if (rw & REQ_FLUSH ||
+ op == REQ_OP_FLUSH)
rwbs[i++] = 'F';
if (op == REQ_OP_WRITE)
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 24/35] xen: set bi_op to REQ_OP |
| Message-ID | <r5NLl-PN-31@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has xen set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/block/xen-blkback/blkback.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 79fe493..854ecca 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -501,7 +501,7 @@ static int xen_vbd_translate(struct phys_req *req, struct xen_blkif *blkif,
struct xen_vbd *vbd = &blkif->vbd;
int rc = -EACCES;
- if ((operation != READ) && vbd->readonly)
+ if ((operation != REQ_OP_READ) && vbd->readonly)
goto out;
if (likely(req->nr_sects)) {
@@ -1014,7 +1014,7 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
preq.sector_number = req->u.discard.sector_number;
preq.nr_sects = req->u.discard.nr_sectors;
- err = xen_vbd_translate(&preq, blkif, WRITE);
+ err = xen_vbd_translate(&preq, blkif, REQ_OP_WRITE);
if (err) {
pr_warn("access denied: DISCARD [%llu->%llu] on dev=%04x\n",
preq.sector_number,
@@ -1229,6 +1229,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
struct bio **biolist = pending_req->biolist;
int i, nbio = 0;
int operation;
+ int operation_flags = 0;
struct blk_plug plug;
bool drain = false;
struct grant_page **pages = pending_req->segments;
@@ -1247,17 +1248,19 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
switch (req_operation) {
case BLKIF_OP_READ:
ring->st_rd_req++;
- operation = READ;
+ operation = REQ_OP_READ;
break;
case BLKIF_OP_WRITE:
ring->st_wr_req++;
- operation = WRITE_ODIRECT;
+ operation = REQ_OP_WRITE;
+ operation_flags = WRITE_ODIRECT;
break;
case BLKIF_OP_WRITE_BARRIER:
drain = true;
case BLKIF_OP_FLUSH_DISKCACHE:
ring->st_f_req++;
- operation = WRITE_FLUSH;
+ operation = REQ_OP_WRITE;
+ operation_flags = WRITE_FLUSH;
break;
default:
operation = 0; /* make gcc happy */
@@ -1269,7 +1272,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
nseg = req->operation == BLKIF_OP_INDIRECT ?
req->u.indirect.nr_segments : req->u.rw.nr_segments;
- if (unlikely(nseg == 0 && operation != WRITE_FLUSH) ||
+ if (unlikely(nseg == 0 && operation_flags != WRITE_FLUSH) ||
unlikely((req->operation != BLKIF_OP_INDIRECT) &&
(nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST)) ||
unlikely((req->operation == BLKIF_OP_INDIRECT) &&
@@ -1310,7 +1313,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
if (xen_vbd_translate(&preq, ring->blkif, operation) != 0) {
pr_debug("access denied: %s of [%llu,%llu] on dev=%04x\n",
- operation == READ ? "read" : "write",
+ operation == REQ_OP_READ ? "read" : "write",
preq.sector_number,
preq.sector_number + preq.nr_sects,
ring->blkif->vbd.pdevice);
@@ -1369,7 +1372,8 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
bio->bi_iter.bi_sector = preq.sector_number;
- bio->bi_rw = operation;
+ bio->bi_op = operation;
+ bio->bi_rw = operation_flags;
}
preq.sector_number += seg[i].nsec;
@@ -1377,7 +1381,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
/* This will be hit if the operation was a flush or discard. */
if (!bio) {
- BUG_ON(operation != WRITE_FLUSH);
+ BUG_ON(operation_flags != WRITE_FLUSH);
bio = bio_alloc(GFP_KERNEL, 0);
if (unlikely(bio == NULL))
@@ -1387,7 +1391,8 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
bio->bi_bdev = preq.bdev;
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
- bio->bi_rw = operation;
+ bio->bi_op = operation;
+ bio->bi_rw = operation_flags;
}
atomic_set(&pending_req->pendcnt, nbio);
@@ -1399,9 +1404,9 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
/* Let the I/Os go.. */
blk_finish_plug(&plug);
- if (operation == READ)
+ if (operation == REQ_OP_READ)
ring->st_rd_sect += preq.nr_sects;
- else if (operation & WRITE)
+ else if (operation == REQ_OP_WRITE)
ring->st_wr_sect += preq.nr_sects;
return 0;
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 30/35] block, fs, drivers: do not test bi_rw for REQ_OPs |
| Message-ID | <r5NLl-PN-17@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
We no longer use the bio->bi_rw field for REQ_OPs: REQ_WRITE,
REQ_DISCARD, REQ_WRITE_SAME, so this patch stops checking
for them in bi_rw and also removes the related compat code.
v2:
1. Remove compat code in __get_request.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
block/bio.c | 6 ++---
block/blk-core.c | 34 ++++++++---------------------
block/blk-merge.c | 14 ++++++------
block/blk-mq.c | 3 +--
drivers/ata/libata-scsi.c | 2 +-
drivers/block/brd.c | 2 +-
drivers/block/drbd/drbd_main.c | 15 +++++++------
drivers/block/drbd/drbd_worker.c | 4 ++--
drivers/block/loop.c | 6 ++---
drivers/block/rbd.c | 2 +-
drivers/block/rsxx/dma.c | 2 +-
drivers/block/umem.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/ide/ide-floppy.c | 2 +-
drivers/lightnvm/rrpc.c | 2 +-
drivers/md/bcache/request.c | 10 ++++-----
drivers/md/dm-cache-target.c | 10 +++++----
drivers/md/dm-crypt.c | 2 +-
drivers/md/dm-log-writes.c | 2 +-
drivers/md/dm-raid1.c | 8 +++----
drivers/md/dm-region-hash.c | 4 ++--
drivers/md/dm-stripe.c | 4 ++--
drivers/md/dm-thin.c | 15 ++++++++-----
drivers/md/dm.c | 6 ++---
drivers/md/linear.c | 2 +-
drivers/md/raid0.c | 2 +-
drivers/scsi/osd/osd_initiator.c | 4 ++--
drivers/staging/lustre/lustre/llite/lloop.c | 8 +++----
include/linux/bio.h | 15 ++++++++-----
include/linux/fs.h | 25 +++++++--------------
30 files changed, 100 insertions(+), 115 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 68df2df..fba4c08 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -669,10 +669,10 @@ struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask,
bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector;
bio->bi_iter.bi_size = bio_src->bi_iter.bi_size;
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
goto integrity_clone;
- if (bio->bi_rw & REQ_WRITE_SAME) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME) {
bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0];
goto integrity_clone;
}
@@ -1795,7 +1795,7 @@ struct bio *bio_split(struct bio *bio, int sectors,
* Discards need a mutable bio_vec to accommodate the payload
* required by the DSM TRIM and UNMAP commands.
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
split = bio_clone_bioset(bio, gfp, bs);
else
split = bio_clone_fast(bio, gfp, bs);
diff --git a/block/blk-core.c b/block/blk-core.c
index 60a0edb..bba1a69 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1151,8 +1151,7 @@ static struct request *__get_request(struct request_list *rl, int op,
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- /* tmp compat - allow users to check either one for the op */
- rq->cmd_flags = op | op_flags | REQ_ALLOCED;
+ rq->cmd_flags = op_flags | REQ_ALLOCED;
rq->op = op;
/* init elvpriv */
@@ -1704,8 +1703,7 @@ void init_request_from_bio(struct request *req, struct bio *bio)
{
req->cmd_type = REQ_TYPE_FS;
- /* tmp compat. Allow users to set bi_op or bi_rw */
- req->cmd_flags |= (bio->bi_rw | bio->bi_op) & REQ_COMMON_MASK;
+ req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
if (bio->bi_rw & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@@ -1855,9 +1853,9 @@ static void handle_bad_sector(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_INFO "attempt to access beyond end of device\n");
- printk(KERN_INFO "%s: rw=%ld, want=%Lu, limit=%Lu\n",
+ printk(KERN_INFO "%s: rw=%d,%ld, want=%Lu, limit=%Lu\n",
bdevname(bio->bi_bdev, b),
- bio->bi_rw,
+ bio->bi_op, bio->bi_rw,
(unsigned long long)bio_end_sector(bio),
(long long)(i_size_read(bio->bi_bdev->bd_inode) >> 9));
}
@@ -1978,14 +1976,14 @@ generic_make_request_checks(struct bio *bio)
}
}
- if ((bio->bi_rw & REQ_DISCARD) &&
+ if ((bio->bi_op == REQ_OP_DISCARD) &&
(!blk_queue_discard(q) ||
((bio->bi_rw & REQ_SECURE) && !blk_queue_secdiscard(q)))) {
err = -EOPNOTSUPP;
goto end_io;
}
- if (bio->bi_rw & REQ_WRITE_SAME && !bdev_write_same(bio->bi_bdev)) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME && !bdev_write_same(bio->bi_bdev)) {
err = -EOPNOTSUPP;
goto end_io;
}
@@ -2039,12 +2037,6 @@ blk_qc_t generic_make_request(struct bio *bio)
struct bio_list bio_list_on_stack;
blk_qc_t ret = BLK_QC_T_NONE;
- /* tmp compat. Allow users to set either one or both.
- * This will be removed when we have converted
- * everyone in the next patches.
- */
- bio->bi_rw |= bio->bi_op;
-
if (!generic_make_request_checks(bio))
goto out;
@@ -2114,12 +2106,6 @@ EXPORT_SYMBOL(generic_make_request);
*/
blk_qc_t submit_bio(struct bio *bio)
{
- /* tmp compat. Allow users to set either one or both.
- * This will be removed when we have converted
- * everyone in the next patches.
- */
- bio->bi_rw |= bio->bi_op;
-
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
@@ -2127,12 +2113,12 @@ blk_qc_t submit_bio(struct bio *bio)
if (bio_has_data(bio)) {
unsigned int count;
- if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
+ if (unlikely(bio->bi_op == REQ_OP_WRITE_SAME))
count = bdev_logical_block_size(bio->bi_bdev) >> 9;
else
count = bio_sectors(bio);
- if (bio->bi_rw & WRITE) {
+ if (op_is_write(bio->bi_op)) {
count_vm_events(PGPGOUT, count);
} else {
task_io_account_read(bio->bi_iter.bi_size);
@@ -2143,7 +2129,7 @@ blk_qc_t submit_bio(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_DEBUG "%s(%d): %s block %Lu on %s (%u sectors)\n",
current->comm, task_pid_nr(current),
- (bio->bi_rw & WRITE) ? "WRITE" : "READ",
+ op_is_write(bio->bi_op) ? "WRITE" : "READ",
(unsigned long long)bio->bi_iter.bi_sector,
bdevname(bio->bi_bdev, b),
count);
@@ -2993,8 +2979,6 @@ EXPORT_SYMBOL_GPL(__blk_end_request_err);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
- /* tmp compat. Allow users to set bi_op or bi_rw */
- rq->cmd_flags |= bio_data_dir(bio);
rq->op = bio->bi_op;
if (bio_has_data(bio))
diff --git a/block/blk-merge.c b/block/blk-merge.c
index f9e012e..e559864 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -172,9 +172,9 @@ void blk_queue_split(struct request_queue *q, struct bio **bio,
struct bio *split, *res;
unsigned nsegs;
- if ((*bio)->bi_rw & REQ_DISCARD)
+ if ((*bio)->bi_op == REQ_OP_DISCARD)
split = blk_bio_discard_split(q, *bio, bs, &nsegs);
- else if ((*bio)->bi_rw & REQ_WRITE_SAME)
+ else if ((*bio)->bi_op == REQ_OP_WRITE_SAME)
split = blk_bio_write_same_split(q, *bio, bs, &nsegs);
else
split = blk_bio_segment_split(q, *bio, q->bio_split, &nsegs);
@@ -213,10 +213,10 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q,
* This should probably be returning 0, but blk_add_request_payload()
* (Christoph!!!!)
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return 1;
- if (bio->bi_rw & REQ_WRITE_SAME)
+ if (bio->bi_op == REQ_OP_WRITE_SAME)
return 1;
fbio = bio;
@@ -389,7 +389,7 @@ static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio,
nsegs = 0;
cluster = blk_queue_cluster(q);
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
/*
* This is a hack - drivers should be neither modifying the
* biovec, nor relying on bi_vcnt - but because of
@@ -404,7 +404,7 @@ static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio,
return 0;
}
- if (bio->bi_rw & REQ_WRITE_SAME) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME) {
single_segment:
*sg = sglist;
bvec = bio_iovec(bio);
@@ -443,7 +443,7 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
}
if (q->dma_drain_size && q->dma_drain_needed(rq)) {
- if (rq->cmd_flags & REQ_WRITE)
+ if (op_is_write(rq->op))
memset(q->dma_drain_buffer, 0, q->dma_drain_size);
sg_unmark_end(sg);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5581bac..c3ac92e 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -170,8 +170,7 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
rq->q = q;
rq->mq_ctx = ctx;
rq->op = op;
- /* tmp compat - allow users to check either one for the op */
- rq->cmd_flags |= op | op_flags;
+ rq->cmd_flags |= op_flags;
/* do not touch atomic flags, it needs atomic ops against the timer */
rq->cpu = -1;
INIT_HLIST_NODE(&rq->hash);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 567859c..cfebc5d 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1124,7 +1124,7 @@ static int atapi_drain_needed(struct request *rq)
if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
return 0;
- if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
+ if (!blk_rq_bytes(rq) || op_is_write(rq->op))
return 0;
return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index cb27190..200284b 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -339,7 +339,7 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
if (bio_end_sector(bio) > get_capacity(bdev->bd_disk))
goto io_error;
- if (unlikely(bio->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD)) {
if (sector & ((PAGE_SIZE >> SECTOR_SHIFT) - 1) ||
bio->bi_iter.bi_size & PAGE_MASK)
goto io_error;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 4ccfd17..3a93fd2 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1603,15 +1603,16 @@ static int _drbd_send_zc_ee(struct drbd_peer_device *peer_device,
return 0;
}
-static u32 bio_flags_to_wire(struct drbd_connection *connection, unsigned long bi_rw)
+static u32 bio_flags_to_wire(struct drbd_connection *connection,
+ struct bio *bio)
{
if (connection->agreed_pro_version >= 95)
- return (bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
- (bi_rw & REQ_FUA ? DP_FUA : 0) |
- (bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
- (bi_rw & REQ_DISCARD ? DP_DISCARD : 0);
+ return (bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
+ (bio->bi_rw & REQ_FUA ? DP_FUA : 0) |
+ (bio->bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
+ (bio->bi_op == REQ_OP_DISCARD ? DP_DISCARD : 0);
else
- return bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
+ return bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
}
/* Used to send write or TRIM aka REQ_DISCARD requests
@@ -1636,7 +1637,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *
p->sector = cpu_to_be64(req->i.sector);
p->block_id = (unsigned long)req;
p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
- dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio->bi_rw);
+ dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio);
if (device->state.conn >= C_SYNC_SOURCE &&
device->state.conn <= C_PAUSED_SYNC_T)
dp_flags |= DP_MAY_SET_IN_SYNC;
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 2a04b43..0949961 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -174,7 +174,7 @@ void drbd_peer_request_endio(struct bio *bio)
struct drbd_peer_request *peer_req = bio->bi_private;
struct drbd_device *device = peer_req->peer_device->device;
int is_write = bio_data_dir(bio) == WRITE;
- int is_discard = !!(bio->bi_rw & REQ_DISCARD);
+ int is_discard = !!(bio->bi_op == REQ_OP_DISCARD);
if (bio->bi_error && __ratelimit(&drbd_ratelimit_state))
drbd_warn(device, "%s: error=%d s=%llus\n",
@@ -248,7 +248,7 @@ void drbd_request_endio(struct bio *bio)
/* to avoid recursion in __req_mod */
if (unlikely(bio->bi_error)) {
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
what = (bio->bi_error == -EOPNOTSUPP)
? DISCARD_COMPLETED_NOTSUPP
: DISCARD_COMPLETED_WITH_ERROR;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e771bab..1afc03c 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -447,7 +447,7 @@ static int lo_req_flush(struct loop_device *lo, struct request *rq)
static inline void handle_partial_read(struct loop_cmd *cmd, long bytes)
{
- if (bytes < 0 || (cmd->rq->cmd_flags & REQ_WRITE))
+ if (bytes < 0 || op_is_write(cmd->rq->op))
return;
if (unlikely(bytes < blk_rq_bytes(cmd->rq))) {
@@ -535,7 +535,7 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq)
pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
- if (rq->cmd_flags & REQ_WRITE) {
+ if (op_is_write(rq->op)) {
if (rq->cmd_flags & REQ_FLUSH)
ret = lo_req_flush(lo, rq);
else if (rq->op == REQ_OP_DISCARD)
@@ -1666,7 +1666,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
static void loop_handle_cmd(struct loop_cmd *cmd)
{
- const bool write = cmd->rq->cmd_flags & REQ_WRITE;
+ const bool write = op_is_write(cmd->rq->op);
struct loop_device *lo = cmd->rq->q->queuedata;
int ret = 0;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 1d0f464..721e82d 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3375,7 +3375,7 @@ static void rbd_queue_workfn(struct work_struct *work)
if (rq->op == REQ_OP_DISCARD)
op_type = OBJ_OP_DISCARD;
- else if (rq->cmd_flags & REQ_WRITE)
+ else if (rq->op == REQ_OP_WRITE)
op_type = OBJ_OP_WRITE;
else
op_type = OBJ_OP_READ;
diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c
index cf8cd29..dfc189e 100644
--- a/drivers/block/rsxx/dma.c
+++ b/drivers/block/rsxx/dma.c
@@ -705,7 +705,7 @@ int rsxx_dma_queue_bio(struct rsxx_cardinfo *card,
dma_cnt[i] = 0;
}
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
bv_len = bio->bi_iter.bi_size;
while (bv_len > 0) {
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 7939b9f..a24ccbc 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -462,7 +462,7 @@ static void process_page(unsigned long data)
le32_to_cpu(desc->local_addr)>>9,
le32_to_cpu(desc->transfer_size));
dump_dmastat(card, control);
- } else if ((bio->bi_rw & REQ_WRITE) &&
+ } else if (op_is_write(bio->bi_op) &&
le32_to_cpu(desc->local_addr) >> 9 ==
card->init_size) {
card->init_size += le32_to_cpu(desc->transfer_size) >> 9;
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 46055db..22c6e00 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -852,7 +852,7 @@ static void __zram_make_request(struct zram *zram, struct bio *bio)
offset = (bio->bi_iter.bi_sector &
(SECTORS_PER_PAGE - 1)) << SECTOR_SHIFT;
- if (unlikely(bio->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD)) {
zram_bio_discard(zram, index, offset, bio);
bio_endio(bio);
return;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 2fb5350..f079d8d 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -206,7 +206,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
memcpy(rq->cmd, pc->c, 12);
pc->rq = rq;
- if (rq->cmd_flags & REQ_WRITE)
+ if (cmd == WRITE)
pc->flags |= PC_FLAG_WRITING;
pc->flags |= PC_FLAG_DMA_OK;
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index c509477..5c5b69a 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -904,7 +904,7 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q, struct bio *bio)
struct nvm_rq *rqd;
int err;
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
rrpc_discard(rrpc, bio);
return BLK_QC_T_NONE;
}
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index cd6837c..be8cd63f 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -378,7 +378,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
c->gc_stats.in_use > CUTOFF_CACHE_ADD ||
- (bio->bi_rw & REQ_DISCARD))
+ (bio->bi_op == REQ_OP_DISCARD))
goto skip;
if (mode == CACHE_MODE_NONE ||
@@ -899,7 +899,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
* But check_overlapping drops dirty keys for which io hasn't started,
* so we still want to call it.
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
s->iop.bypass = true;
if (should_writeback(dc, s->orig_bio,
@@ -913,7 +913,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
s->iop.bio = s->orig_bio;
bio_get(s->iop.bio);
- if (!(bio->bi_rw & REQ_DISCARD) ||
+ if (!(bio->bi_op == REQ_OP_DISCARD) ||
blk_queue_discard(bdev_get_queue(dc->bdev)))
closure_bio_submit(bio, cl);
} else if (s->iop.writeback) {
@@ -993,7 +993,7 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q,
cached_dev_read(dc, s);
}
} else {
- if ((bio->bi_rw & REQ_DISCARD) &&
+ if ((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
bio_endio(bio);
else
@@ -1104,7 +1104,7 @@ static blk_qc_t flash_dev_make_request(struct request_queue *q,
&KEY(d->id, bio->bi_iter.bi_sector, 0),
&KEY(d->id, bio_end_sector(bio), 0));
- s->iop.bypass = (bio->bi_rw & REQ_DISCARD) != 0;
+ s->iop.bypass = (bio->bi_op == REQ_OP_DISCARD) != 0;
s->iop.writeback = true;
s->iop.bio = bio;
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 2238d6f..95edbaa 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -788,7 +788,8 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
- !(bio->bi_rw & (REQ_FUA | REQ_FLUSH | REQ_DISCARD))) {
+ !(bio->bi_rw & (REQ_FUA | REQ_FLUSH)) &&
+ bio->bi_op != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
}
@@ -851,7 +852,7 @@ static void inc_ds(struct cache *cache, struct bio *bio,
static bool accountable_bio(struct cache *cache, struct bio *bio)
{
return ((bio->bi_bdev == cache->origin_dev->bdev) &&
- !(bio->bi_rw & REQ_DISCARD));
+ bio->bi_op != REQ_OP_DISCARD);
}
static void accounted_begin(struct cache *cache, struct bio *bio)
@@ -1062,7 +1063,8 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
- return bio->bi_rw & (REQ_FLUSH | REQ_FUA | REQ_DISCARD);
+ return bio->bi_op == REQ_OP_DISCARD ||
+ bio->bi_rw & (REQ_FLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -1975,7 +1977,7 @@ static void process_deferred_bios(struct cache *cache)
if (bio->bi_rw & REQ_FLUSH)
process_flush_bio(cache, bio);
- else if (bio->bi_rw & REQ_DISCARD)
+ else if (bio->bi_op == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
else
process_bio(cache, &structs, bio);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 70fbf11..3a4ddad 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1916,7 +1916,7 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
* - for REQ_FLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_DISCARD caller must use flush if IO ordering matters
*/
- if (unlikely(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))) {
+ if (unlikely(bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
bio->bi_iter.bi_sector = cc->start +
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 27630c5..e991405 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -557,7 +557,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
int i = 0;
bool flush_bio = (bio->bi_rw & REQ_FLUSH);
bool fua_bio = (bio->bi_rw & REQ_FUA);
- bool discard_bio = (bio->bi_rw & REQ_DISCARD);
+ bool discard_bio = (bio->bi_op == REQ_OP_DISCARD);
pb->block = NULL;
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 8a86bc3..c4d23da 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -626,7 +626,7 @@ static void write_callback(unsigned long error, void *context)
* If the bio is discard, return an error, but do not
* degrade the array.
*/
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
bio->bi_error = -EOPNOTSUPP;
bio_endio(bio);
return;
@@ -665,7 +665,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
.client = ms->io_client,
};
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
@@ -705,7 +705,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
while ((bio = bio_list_pop(writes))) {
if ((bio->bi_rw & REQ_FLUSH) ||
- (bio->bi_rw & REQ_DISCARD)) {
+ (bio->bi_op == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
}
@@ -1253,7 +1253,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- if (!(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD)))
+ if (!(bio->bi_rw & REQ_FLUSH) && bio->bi_op != REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
}
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 74cb7b9..ce4af57 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -403,7 +403,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio *bio)
return;
}
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return;
/* We must inform the log that the sync count has changed. */
@@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
- if (bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))
+ if (bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 797ddb9..12b1630 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -292,8 +292,8 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
return DM_MAPIO_REMAPPED;
}
- if (unlikely(bio->bi_rw & REQ_DISCARD) ||
- unlikely(bio->bi_rw & REQ_WRITE_SAME)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD) ||
+ unlikely(bio->bi_op == REQ_OP_WRITE_SAME)) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
return stripe_map_range(sc, bio, target_bio_nr);
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 6e204e0..7f76e8c 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -705,7 +705,7 @@ static void inc_all_io_entry(struct pool *pool, struct bio *bio)
{
struct dm_thin_endio_hook *h;
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return;
h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
@@ -868,7 +868,8 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA))
+ if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
inc_all_io_entry(info->tc->pool, bio);
@@ -1646,7 +1647,8 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)))
+ (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));;
@@ -2035,7 +2037,7 @@ static void process_thin_deferred_bios(struct thin_c *tc)
break;
}
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
pool->process_discard(tc, bio);
else
pool->process_bio(tc, bio);
@@ -2122,7 +2124,7 @@ static void process_thin_deferred_cells(struct thin_c *tc)
return;
}
- if (cell->holder->bi_rw & REQ_DISCARD)
+ if (cell->holder->bi_op == REQ_OP_DISCARD)
pool->process_discard_cell(tc, cell);
else
pool->process_cell(tc, cell);
@@ -2558,7 +2560,8 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)) {
+ if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
}
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 53f7b1e..4bac3dc 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1053,7 +1053,7 @@ static void clone_endio(struct bio *bio)
}
}
- if (unlikely(r == -EREMOTEIO && (bio->bi_rw & REQ_WRITE_SAME) &&
+ if (unlikely(r == -EREMOTEIO && (bio->bi_op == REQ_OP_WRITE_SAME) &&
!bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors))
disable_write_same(md);
@@ -1737,9 +1737,9 @@ static int __split_and_process_non_flush(struct clone_info *ci)
struct dm_target *ti;
unsigned len;
- if (unlikely(bio->bi_rw & REQ_DISCARD))
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD))
return __send_discard(ci);
- else if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
+ else if (unlikely(bio->bi_op == REQ_OP_WRITE_SAME))
return __send_write_same(ci);
ti = dm_table_find_target(ci->map, ci->sector);
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index b7fe7e9..aad82c7 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -252,7 +252,7 @@ static void linear_make_request(struct mddev *mddev, struct bio *bio)
split->bi_iter.bi_sector = split->bi_iter.bi_sector -
start_sector + data_offset;
- if (unlikely((split->bi_rw & REQ_DISCARD) &&
+ if (unlikely((split->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(split->bi_bdev)))) {
/* Just ignore it */
bio_endio(split);
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 2ea12c6..e0d1b8c 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -488,7 +488,7 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
split->bi_iter.bi_sector = sector + zone->dev_start +
tmp_dev->data_offset;
- if (unlikely((split->bi_rw & REQ_DISCARD) &&
+ if (unlikely((split->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(split->bi_bdev)))) {
/* Just ignore it */
bio_endio(split);
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index 4e7b440..680d9e4 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -824,7 +824,7 @@ void osd_req_write(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len);
WARN_ON(or->out.bio || or->out.total_bytes);
- WARN_ON(0 == (bio->bi_rw & REQ_WRITE));
+ WARN_ON(!op_is_write(bio->bi_op));
or->out.bio = bio;
or->out.total_bytes = len;
}
@@ -875,7 +875,7 @@ void osd_req_read(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len);
WARN_ON(or->in.bio || or->in.total_bytes);
- WARN_ON(bio->bi_rw & REQ_WRITE);
+ WARN_ON(op_is_write(bio->bi_op));
or->in.bio = bio;
or->in.total_bytes = len;
}
diff --git a/drivers/staging/lustre/lustre/llite/lloop.c b/drivers/staging/lustre/lustre/llite/lloop.c
index 20fecaf..3c5c55b 100644
--- a/drivers/staging/lustre/lustre/llite/lloop.c
+++ b/drivers/staging/lustre/lustre/llite/lloop.c
@@ -211,9 +211,9 @@ static int do_bio_lustrebacked(struct lloop_device *lo, struct bio *head)
return io->ci_result;
io->ci_lockreq = CILR_NEVER;
- rw = head->bi_rw;
+ rw = bio_data_dir(head);
for (bio = head; bio ; bio = bio->bi_next) {
- LASSERT(rw == bio->bi_rw);
+ LASSERT(rw == bio_data_dir(bio));
offset = (pgoff_t)(bio->bi_iter.bi_sector << 9) + lo->lo_offset;
bio_for_each_segment(bvec, bio, iter) {
@@ -304,9 +304,9 @@ static unsigned int loop_get_bio(struct lloop_device *lo, struct bio **req)
/* TODO: need to split the bio, too bad. */
LASSERT(first->bi_vcnt <= LLOOP_MAX_SEGMENTS);
- rw = first->bi_rw;
+ rw = bio_data_dir(first);
bio = &lo->lo_bio;
- while (*bio && (*bio)->bi_rw == rw) {
+ while (*bio && bio_data_dir(*bio) == rw) {
CDEBUG(D_INFO, "bio sector %llu size %u count %u vcnt%u \n",
(unsigned long long)(*bio)->bi_iter.bi_sector,
(*bio)->bi_iter.bi_size,
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 9f0e2cf..1e4b3b5 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -106,18 +106,23 @@ static inline bool bio_has_data(struct bio *bio)
{
if (bio &&
bio->bi_iter.bi_size &&
- !(bio->bi_rw & REQ_DISCARD))
+ !(bio->bi_op == REQ_OP_DISCARD))
return true;
return false;
}
+static inline bool bio_no_advance_iter(struct bio *bio)
+{
+ return bio->bi_op == REQ_OP_DISCARD || bio->bi_op == REQ_OP_WRITE_SAME;
+}
+
static inline bool bio_is_rw(struct bio *bio)
{
if (!bio_has_data(bio))
return false;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
return false;
return true;
@@ -225,7 +230,7 @@ static inline void bio_advance_iter(struct bio *bio, struct bvec_iter *iter,
{
iter->bi_sector += bytes >> 9;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
iter->bi_size -= bytes;
else
bvec_iter_advance(bio->bi_io_vec, iter, bytes);
@@ -253,10 +258,10 @@ static inline unsigned bio_segments(struct bio *bio)
* differently:
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return 1;
- if (bio->bi_rw & REQ_WRITE_SAME)
+ if (bio->bi_op == REQ_OP_WRITE_SAME)
return 1;
bio_for_each_segment(bv, bio, iter)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index beabae8..0a10de0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2448,33 +2448,24 @@ static inline bool op_is_write(int op)
}
/*
- * return READ, READA, or WRITE
+ * return data direction, READ or WRITE
*/
-static inline int bio_rw(struct bio *bio)
+static inline int bio_data_dir(struct bio *bio)
{
- /*
- * tmp cpmpat. Allow users to set either op or rw, until
- * all code is converted in the next patches.
- */
if (op_is_write(bio->bi_op))
return WRITE;
-
- return bio->bi_rw & (RW_MASK | RWA_MASK);
+ return READ;
}
/*
- * return data direction, READ or WRITE
+ * return READ, READA, or WRITE
*/
-static inline int bio_data_dir(struct bio *bio)
+static inline int bio_rw(struct bio *bio)
{
- /*
- * tmp cpmpat. Allow users to set either op or rw, until
- * all code is converted in the next patches.
- */
- if (op_is_write(bio->bi_op))
- return WRITE;
+ if (bio->bi_rw & RWA_MASK)
+ return READA;
- return bio->bi_rw & 1;
+ return bio_data_dir(bio);
}
extern void check_disk_size_change(struct gendisk *disk,
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 23/35] md/raid: set bi_op to REQ_OP |
| Message-ID | <r5NLl-PN-35@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has md/raid set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/bitmap.c | 2 +-
drivers/md/dm-raid.c | 5 +++--
drivers/md/md.c | 11 +++++++----
drivers/md/md.h | 3 ++-
drivers/md/raid1.c | 34 ++++++++++++++++----------------
drivers/md/raid10.c | 50 ++++++++++++++++++++++++++----------------------
drivers/md/raid5-cache.c | 25 +++++++++++++++---------
drivers/md/raid5.c | 48 ++++++++++++++++++++++++++--------------------
8 files changed, 101 insertions(+), 77 deletions(-)
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index c8e4124..6c241f8 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -160,7 +160,7 @@ static int read_sb_page(struct mddev *mddev, loff_t offset,
if (sync_page_io(rdev, target,
roundup(size, bdev_logical_block_size(rdev->bdev)),
- page, READ, true)) {
+ page, REQ_OP_READ, 0, true)) {
page->index = index;
return 0;
}
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index a090121..43a749c 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -792,7 +792,7 @@ static int read_disk_sb(struct md_rdev *rdev, int size)
if (rdev->sb_loaded)
return 0;
- if (!sync_page_io(rdev, 0, size, rdev->sb_page, READ, 1)) {
+ if (!sync_page_io(rdev, 0, size, rdev->sb_page, REQ_OP_READ, 0, 1)) {
DMERR("Failed to read superblock of device at position %d",
rdev->raid_disk);
md_error(rdev->mddev, rdev);
@@ -1646,7 +1646,8 @@ static void attempt_restore_of_faulty_devices(struct raid_set *rs)
for (i = 0; i < rs->md.raid_disks; i++) {
r = &rs->dev[i].rdev;
if (test_bit(Faulty, &r->flags) && r->sb_page &&
- sync_page_io(r, 0, r->sb_size, r->sb_page, READ, 1)) {
+ sync_page_io(r, 0, r->sb_size, r->sb_page, REQ_OP_READ, 0,
+ 1)) {
DMINFO("Faulty %s device #%d has readable super block."
" Attempting to revive it.",
rs->raid_type->name, i);
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 6f6102e..8cdd37f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -391,6 +391,7 @@ static void submit_flushes(struct work_struct *ws)
bi->bi_end_io = md_end_flush;
bi->bi_private = rdev;
bi->bi_bdev = rdev->bdev;
+ bi->bi_op = REQ_OP_WRITE;
bi->bi_rw = WRITE_FLUSH;
atomic_inc(&mddev->flush_pending);
submit_bio(bi);
@@ -737,6 +738,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
bio_add_page(bio, page, size, 0);
bio->bi_private = rdev;
bio->bi_end_io = super_written;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH_FUA;
atomic_inc(&mddev->pending_writes);
@@ -750,14 +752,15 @@ void md_super_wait(struct mddev *mddev)
}
int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
- struct page *page, int rw, bool metadata_op)
+ struct page *page, int op, int op_flags, bool metadata_op)
{
struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, rdev->mddev);
int ret;
bio->bi_bdev = (metadata_op && rdev->meta_bdev) ?
rdev->meta_bdev : rdev->bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
if (metadata_op)
bio->bi_iter.bi_sector = sector + rdev->sb_start;
else if (rdev->mddev->reshape_position != MaxSector &&
@@ -783,7 +786,7 @@ static int read_disk_sb(struct md_rdev *rdev, int size)
if (rdev->sb_loaded)
return 0;
- if (!sync_page_io(rdev, 0, size, rdev->sb_page, READ, true))
+ if (!sync_page_io(rdev, 0, size, rdev->sb_page, REQ_OP_READ, 0, true))
goto fail;
rdev->sb_loaded = 1;
return 0;
@@ -1469,7 +1472,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
return -EINVAL;
bb_sector = (long long)offset;
if (!sync_page_io(rdev, bb_sector, sectors << 9,
- rdev->bb_page, READ, true))
+ rdev->bb_page, REQ_OP_READ, 0, true))
return -EIO;
bbp = (u64 *)page_address(rdev->bb_page);
rdev->badblocks.shift = sb->bblog_shift;
diff --git a/drivers/md/md.h b/drivers/md/md.h
index b5c4be7..2e0918f 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -618,7 +618,8 @@ extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
sector_t sector, int size, struct page *page);
extern void md_super_wait(struct mddev *mddev);
extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
- struct page *page, int rw, bool metadata_op);
+ struct page *page, int op, int op_flags,
+ bool metadata_op);
extern void md_do_sync(struct md_thread *thread);
extern void md_new_event(struct mddev *mddev);
extern int md_allow_write(struct mddev *mddev);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index f2d9c01..150df76 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -759,7 +759,7 @@ static void flush_pending_writes(struct r1conf *conf)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1033,7 +1033,7 @@ static void raid1_unplug(struct blk_plug_cb *cb, bool from_schedule)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1053,12 +1053,11 @@ static void raid1_make_request(struct mddev *mddev, struct bio * bio)
int i, disks;
struct bitmap *bitmap;
unsigned long flags;
+ const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH | REQ_FUA));
- const unsigned long do_discard = (bio->bi_rw
- & (REQ_DISCARD | REQ_SECURE));
- const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME);
+ const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
struct raid1_plug_cb *plug = NULL;
@@ -1166,7 +1165,8 @@ read_again:
mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = raid1_end_read_request;
- read_bio->bi_rw = READ | do_sync;
+ read_bio->bi_op = op;
+ read_bio->bi_rw = do_sync;
read_bio->bi_private = r1_bio;
if (max_sectors < r1_bio->sectors) {
@@ -1376,8 +1376,9 @@ read_again:
conf->mirrors[i].rdev->data_offset);
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_end_io = raid1_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw =
- WRITE | do_flush_fua | do_sync | do_discard | do_same;
+ do_flush_fua | do_sync | do_sec;
mbio->bi_private = r1_bio;
atomic_inc(&r1_bio->remaining);
@@ -1771,7 +1772,7 @@ static void end_sync_write(struct bio *bio)
static int r1_sync_page_io(struct md_rdev *rdev, sector_t sector,
int sectors, struct page *page, int rw)
{
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
/* success */
return 1;
if (rw == WRITE) {
@@ -1825,7 +1826,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
rdev = conf->mirrors[d].rdev;
if (sync_page_io(rdev, sect, s<<9,
bio->bi_io_vec[idx].bv_page,
- READ, false)) {
+ REQ_OP_READ, 0, false)) {
success = 1;
break;
}
@@ -2030,7 +2031,7 @@ static void sync_request_write(struct mddev *mddev, struct r1bio *r1_bio)
!test_bit(MD_RECOVERY_SYNC, &mddev->recovery))))
continue;
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
wbio->bi_end_io = end_sync_write;
atomic_inc(&r1_bio->remaining);
md_sync_acct(conf->mirrors[i].rdev->bdev, bio_sectors(wbio));
@@ -2090,7 +2091,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
is_badblock(rdev, sect, s,
&first_bad, &bad_sectors) == 0 &&
sync_page_io(rdev, sect, s<<9,
- conf->tmppage, READ, false))
+ conf->tmppage, REQ_OP_READ, 0, false))
success = 1;
else {
d++;
@@ -2201,7 +2202,7 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
wbio = bio_clone_mddev(r1_bio->master_bio, GFP_NOIO, mddev);
}
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
wbio->bi_iter.bi_sector = r1_bio->sector;
wbio->bi_iter.bi_size = r1_bio->sectors << 9;
@@ -2343,7 +2344,8 @@ read_more:
bio->bi_iter.bi_sector = r1_bio->sector + rdev->data_offset;
bio->bi_bdev = rdev->bdev;
bio->bi_end_io = raid1_end_read_request;
- bio->bi_rw = READ | do_sync;
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = do_sync;
bio->bi_private = r1_bio;
if (max_sectors < r1_bio->sectors) {
/* Drat - have to split this up more */
@@ -2569,7 +2571,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
if (i < conf->raid_disks)
still_degraded = 1;
} else if (!test_bit(In_sync, &rdev->flags)) {
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_end_io = end_sync_write;
write_targets ++;
} else {
@@ -2596,7 +2598,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
if (disk < 0)
disk = i;
}
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_end_io = end_sync_read;
read_targets++;
} else if (!test_bit(WriteErrorSeen, &rdev->flags) &&
@@ -2608,7 +2610,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
* if we are doing resync or repair. Otherwise, leave
* this device alone for this sync request.
*/
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_end_io = end_sync_write;
write_targets++;
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index d0d84f3..871edf6 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -865,7 +865,7 @@ static void flush_pending_writes(struct r10conf *conf)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1041,7 +1041,7 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1058,12 +1058,11 @@ static void __make_request(struct mddev *mddev, struct bio *bio)
struct r10bio *r10_bio;
struct bio *read_bio;
int i;
+ const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
const unsigned long do_fua = (bio->bi_rw & REQ_FUA);
- const unsigned long do_discard = (bio->bi_rw
- & (REQ_DISCARD | REQ_SECURE));
- const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME);
+ const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
unsigned long flags;
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
@@ -1156,7 +1155,8 @@ read_again:
choose_data_offset(r10_bio, rdev);
read_bio->bi_bdev = rdev->bdev;
read_bio->bi_end_io = raid10_end_read_request;
- read_bio->bi_rw = READ | do_sync;
+ read_bio->bi_op = op;
+ read_bio->bi_rw = do_sync;
read_bio->bi_private = r10_bio;
if (max_sectors < r10_bio->sectors) {
@@ -1363,8 +1363,9 @@ retry_write:
rdev));
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw =
- WRITE | do_sync | do_fua | do_discard | do_same;
+ do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1406,8 +1407,9 @@ retry_write:
r10_bio, rdev));
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw =
- WRITE | do_sync | do_fua | do_discard | do_same;
+ do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1992,7 +1994,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
tbio->bi_vcnt = vcnt;
tbio->bi_iter.bi_size = fbio->bi_iter.bi_size;
- tbio->bi_rw = WRITE;
+ tbio->bi_op = REQ_OP_WRITE;
tbio->bi_private = r10_bio;
tbio->bi_iter.bi_sector = r10_bio->devs[i].addr;
tbio->bi_end_io = end_sync_write;
@@ -2078,7 +2080,7 @@ static void fix_recovery_read_error(struct r10bio *r10_bio)
addr,
s << 9,
bio->bi_io_vec[idx].bv_page,
- READ, false);
+ REQ_OP_READ, 0, false);
if (ok) {
rdev = conf->mirrors[dw].rdev;
addr = r10_bio->devs[1].addr + sect;
@@ -2086,7 +2088,7 @@ static void fix_recovery_read_error(struct r10bio *r10_bio)
addr,
s << 9,
bio->bi_io_vec[idx].bv_page,
- WRITE, false);
+ REQ_OP_WRITE, 0, false);
if (!ok) {
set_bit(WriteErrorSeen, &rdev->flags);
if (!test_and_set_bit(WantReplacement,
@@ -2213,7 +2215,7 @@ static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
if (is_badblock(rdev, sector, sectors, &first_bad, &bad_sectors)
&& (rw == READ || test_bit(WriteErrorSeen, &rdev->flags)))
return -1;
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
/* success */
return 1;
if (rw == WRITE) {
@@ -2299,7 +2301,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
r10_bio->devs[sl].addr +
sect,
s<<9,
- conf->tmppage, READ, false);
+ conf->tmppage,
+ REQ_OP_READ, 0, false);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();
if (success)
@@ -2474,7 +2477,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int i)
choose_data_offset(r10_bio, rdev) +
(sector - r10_bio->sector));
wbio->bi_bdev = rdev->bdev;
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
if (submit_bio_wait(wbio) < 0)
/* Failure! */
@@ -2550,7 +2553,8 @@ read_more:
bio->bi_iter.bi_sector = r10_bio->devs[slot].addr
+ choose_data_offset(r10_bio, rdev);
bio->bi_bdev = rdev->bdev;
- bio->bi_rw = READ | do_sync;
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = do_sync;
bio->bi_private = r10_bio;
bio->bi_end_io = raid10_end_read_request;
if (max_sectors < r10_bio->sectors) {
@@ -3037,7 +3041,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_read;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
from_addr = r10_bio->devs[j].addr;
bio->bi_iter.bi_sector = from_addr +
rdev->data_offset;
@@ -3063,7 +3067,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = to_addr
+ rdev->data_offset;
bio->bi_bdev = rdev->bdev;
@@ -3092,7 +3096,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = to_addr +
rdev->data_offset;
bio->bi_bdev = rdev->bdev;
@@ -3212,7 +3216,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_read;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_iter.bi_sector = sector +
conf->mirrors[d].rdev->data_offset;
bio->bi_bdev = conf->mirrors[d].rdev->bdev;
@@ -3234,7 +3238,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = sector +
conf->mirrors[d].replacement->data_offset;
bio->bi_bdev = conf->mirrors[d].replacement->bdev;
@@ -4317,7 +4321,7 @@ read_more:
+ rdev->data_offset);
read_bio->bi_private = r10_bio;
read_bio->bi_end_io = end_sync_read;
- read_bio->bi_rw = READ;
+ read_bio->bi_op = REQ_OP_READ;
read_bio->bi_flags &= (~0UL << BIO_RESET_BITS);
read_bio->bi_error = 0;
read_bio->bi_vcnt = 0;
@@ -4351,7 +4355,7 @@ read_more:
rdev2->new_data_offset;
b->bi_private = r10_bio;
b->bi_end_io = end_reshape_write;
- b->bi_rw = WRITE;
+ b->bi_op = REQ_OP_WRITE;
b->bi_next = blist;
blist = b;
}
@@ -4519,7 +4523,7 @@ static int handle_reshape_read_error(struct mddev *mddev,
addr,
s << 9,
bvec[idx].bv_page,
- READ, false);
+ REQ_OP_READ, 0, false);
if (success)
break;
failed:
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 2d56fdc..da07670 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -261,7 +261,7 @@ static struct bio *r5l_bio_alloc(struct r5l_log *log)
{
struct bio *bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_PAGES, log->bs);
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_bdev = log->rdev->bdev;
bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start;
@@ -686,6 +686,7 @@ void r5l_flush_stripe_to_raid(struct r5l_log *log)
bio_reset(&log->flush_bio);
log->flush_bio.bi_bdev = log->rdev->bdev;
log->flush_bio.bi_end_io = r5l_log_flush_endio;
+ log->flush_bio.bi_op = REQ_OP_WRITE;
log->flush_bio.bi_rw = WRITE_FLUSH;
submit_bio(&log->flush_bio);
}
@@ -882,7 +883,8 @@ static int r5l_read_meta_block(struct r5l_log *log,
struct r5l_meta_block *mb;
u32 crc, stored_crc;
- if (!sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, READ, false))
+ if (!sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, REQ_OP_READ, 0,
+ false))
return -EIO;
mb = page_address(page);
@@ -927,7 +929,8 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log,
&disk_index, sh);
sync_page_io(log->rdev, *log_offset, PAGE_SIZE,
- sh->dev[disk_index].page, READ, false);
+ sh->dev[disk_index].page, REQ_OP_READ, 0,
+ false);
sh->dev[disk_index].log_checksum =
le32_to_cpu(payload->checksum[0]);
set_bit(R5_Wantwrite, &sh->dev[disk_index].flags);
@@ -935,7 +938,8 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log,
} else {
disk_index = sh->pd_idx;
sync_page_io(log->rdev, *log_offset, PAGE_SIZE,
- sh->dev[disk_index].page, READ, false);
+ sh->dev[disk_index].page, REQ_OP_READ, 0,
+ false);
sh->dev[disk_index].log_checksum =
le32_to_cpu(payload->checksum[0]);
set_bit(R5_Wantwrite, &sh->dev[disk_index].flags);
@@ -945,7 +949,7 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log,
sync_page_io(log->rdev,
r5l_ring_add(log, *log_offset, BLOCK_SECTORS),
PAGE_SIZE, sh->dev[disk_index].page,
- READ, false);
+ REQ_OP_READ, 0, false);
sh->dev[disk_index].log_checksum =
le32_to_cpu(payload->checksum[1]);
set_bit(R5_Wantwrite,
@@ -987,11 +991,13 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log,
rdev = rcu_dereference(conf->disks[disk_index].rdev);
if (rdev)
sync_page_io(rdev, stripe_sect, PAGE_SIZE,
- sh->dev[disk_index].page, WRITE, false);
+ sh->dev[disk_index].page, REQ_OP_WRITE, 0,
+ false);
rrdev = rcu_dereference(conf->disks[disk_index].replacement);
if (rrdev)
sync_page_io(rrdev, stripe_sect, PAGE_SIZE,
- sh->dev[disk_index].page, WRITE, false);
+ sh->dev[disk_index].page, REQ_OP_WRITE, 0,
+ false);
}
raid5_release_stripe(sh);
return 0;
@@ -1063,7 +1069,8 @@ static int r5l_log_write_empty_meta_block(struct r5l_log *log, sector_t pos,
crc = crc32c_le(log->uuid_checksum, mb, PAGE_SIZE);
mb->checksum = cpu_to_le32(crc);
- if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, WRITE_FUA, false)) {
+ if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, REQ_OP_WRITE,
+ WRITE_FUA, false)) {
__free_page(page);
return -EIO;
}
@@ -1138,7 +1145,7 @@ static int r5l_load_log(struct r5l_log *log)
if (!page)
return -ENOMEM;
- if (!sync_page_io(rdev, cp, PAGE_SIZE, page, READ, false)) {
+ if (!sync_page_io(rdev, cp, PAGE_SIZE, page, REQ_OP_READ, 0, false)) {
ret = -EIO;
goto ioerr;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7f770b0..0c53ca2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -815,7 +815,8 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh
dd_idx = 0;
while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)
dd_idx++;
- if (head->dev[dd_idx].towrite->bi_rw != sh->dev[dd_idx].towrite->bi_rw)
+ if (head->dev[dd_idx].towrite->bi_rw != sh->dev[dd_idx].towrite->bi_rw ||
+ head->dev[dd_idx].towrite->bi_op != sh->dev[dd_idx].towrite->bi_op)
goto unlock_out;
if (head->batch_head) {
@@ -900,29 +901,32 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
if (r5l_write_stripe(conf->log, sh) == 0)
return;
for (i = disks; i--; ) {
- int rw;
+ int op;
+ int op_flags = 0;
int replace_only = 0;
struct bio *bi, *rbi;
struct md_rdev *rdev, *rrdev = NULL;
sh = head_sh;
if (test_and_clear_bit(R5_Wantwrite, &sh->dev[i].flags)) {
- if (test_and_clear_bit(R5_WantFUA, &sh->dev[i].flags))
- rw = WRITE_FUA;
- else
- rw = WRITE;
+ if (test_and_clear_bit(R5_WantFUA, &sh->dev[i].flags)) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else {
+ op = REQ_OP_WRITE;
+ }
if (test_bit(R5_Discard, &sh->dev[i].flags))
- rw |= REQ_DISCARD;
+ op = REQ_OP_DISCARD;
} else if (test_and_clear_bit(R5_Wantread, &sh->dev[i].flags))
- rw = READ;
+ op = REQ_OP_READ;
else if (test_and_clear_bit(R5_WantReplace,
&sh->dev[i].flags)) {
- rw = WRITE;
+ op = REQ_OP_WRITE;
replace_only = 1;
} else
continue;
if (test_and_clear_bit(R5_SyncIO, &sh->dev[i].flags))
- rw |= REQ_SYNC;
+ op_flags |= REQ_SYNC;
again:
bi = &sh->dev[i].req;
@@ -936,7 +940,7 @@ again:
rdev = rrdev;
rrdev = NULL;
}
- if (rw & WRITE) {
+ if (op_is_write(op)) {
if (replace_only)
rdev = NULL;
if (rdev == rrdev)
@@ -962,7 +966,7 @@ again:
* need to check for writes. We never accept write errors
* on the replacement, so we don't to check rrdev.
*/
- while ((rw & WRITE) && rdev &&
+ while (op_is_write(op) && rdev &&
test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
int bad_sectors;
@@ -1004,8 +1008,9 @@ again:
bio_reset(bi);
bi->bi_bdev = rdev->bdev;
- bi->bi_rw = rw;
- bi->bi_end_io = (rw & WRITE)
+ bi->bi_op = op;
+ bi->bi_rw = op_flags;
+ bi->bi_end_io = op_is_write(op)
? raid5_end_write_request
: raid5_end_read_request;
bi->bi_private = sh;
@@ -1036,7 +1041,7 @@ again:
* If this is discard request, set bi_vcnt 0. We don't
* want to confuse SCSI because SCSI will replace payload
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
bi->bi_vcnt = 0;
if (rrdev)
set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
@@ -1056,8 +1061,9 @@ again:
bio_reset(rbi);
rbi->bi_bdev = rrdev->bdev;
- rbi->bi_rw = rw;
- BUG_ON(!(rw & WRITE));
+ rbi->bi_op = op;
+ rbi->bi_rw = op_flags;
+ BUG_ON(!op_is_write(op));
rbi->bi_end_io = raid5_end_write_request;
rbi->bi_private = sh;
@@ -1085,7 +1091,7 @@ again:
* If this is discard request, set bi_vcnt 0. We don't
* want to confuse SCSI because SCSI will replace payload
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
rbi->bi_vcnt = 0;
if (conf->mddev->gendisk)
trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
@@ -1094,7 +1100,7 @@ again:
generic_make_request(rbi);
}
if (!rdev && !rrdev) {
- if (rw & WRITE)
+ if (op_is_write(op))
set_bit(STRIPE_DEGRADED, &sh->state);
pr_debug("skip op %ld on disc %d for sector %llu\n",
bi->bi_rw, i, (unsigned long long)sh->sector);
@@ -1632,7 +1638,7 @@ again:
set_bit(R5_WantFUA, &dev->flags);
if (wbi->bi_rw & REQ_SYNC)
set_bit(R5_SyncIO, &dev->flags);
- if (wbi->bi_rw & REQ_DISCARD)
+ if (wbi->bi_op == REQ_OP_DISCARD)
set_bit(R5_Discard, &dev->flags);
else {
tx = async_copy_data(1, wbi, &dev->page,
@@ -5173,7 +5179,7 @@ static void raid5_make_request(struct mddev *mddev, struct bio * bi)
return;
}
- if (unlikely(bi->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bi->bi_op == REQ_OP_DISCARD)) {
make_discard_request(mddev, bi);
return;
}
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 34/35] block: add QUEUE_FLAGs for flush and fua |
| Message-ID | <r5NLl-PN-37@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
The last patch added a REQ_OP_FLUSH for request_fn drivers
and the next patch renames REQ_FLUSH to REQ_PREFLUSH which
will be used by file systems and make_request_fn drivers.
This leaves REQ_FLUSH/REQ_FUA defined for drivers to tell
the block layer if flush/fua is supported. The names are
confusing and I bet will will accidentally be used by
people to request flushes. To avoid that, this patch adds
QUEUE_FLAGs for flush and fua which drivers will use to
indicate what they support.
v2:
1. Fix kbuild failures. Forgot to update ubd driver.
v3:
1. Rename dm_table_supports_flush callout function argument to
callout_fn.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
arch/um/drivers/ubd_kern.c | 2 +-
block/blk-core.c | 3 +-
block/blk-flush.c | 12 ++++----
block/blk-settings.c | 20 --------------
drivers/block/drbd/drbd_main.c | 3 +-
drivers/block/loop.c | 2 +-
drivers/block/mtip32xx/mtip32xx.c | 3 +-
drivers/block/nbd.c | 6 ++--
drivers/block/osdblk.c | 2 +-
drivers/block/ps3disk.c | 2 +-
drivers/block/skd_main.c | 3 +-
drivers/block/virtio_blk.c | 4 +--
drivers/block/xen-blkback/xenbus.c | 2 +-
drivers/block/xen-blkfront.c | 55 ++++++++++++++++++++++---------------
drivers/ide/ide-disk.c | 6 ++--
drivers/md/bcache/super.c | 4 +--
drivers/md/dm-table.c | 32 +++++++++++++--------
drivers/md/md.c | 3 +-
drivers/md/raid5-cache.c | 3 +-
drivers/mmc/card/block.c | 3 +-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/core.c | 6 ++--
drivers/scsi/sd.c | 13 +++++----
drivers/target/target_core_iblock.c | 6 ++--
include/linux/blkdev.h | 6 ++--
25 files changed, 108 insertions(+), 95 deletions(-)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index a7dc382..44380d6 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -862,7 +862,7 @@ static int ubd_add(int n, char **error_out)
goto out;
}
ubd_dev->queue->queuedata = ubd_dev;
- blk_queue_flush(ubd_dev->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, ubd_dev->queue);
blk_queue_max_segments(ubd_dev->queue, MAX_SG);
err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]);
diff --git a/block/blk-core.c b/block/blk-core.c
index 5436c19..8640b35 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1968,7 +1968,8 @@ generic_make_request_checks(struct bio *bio)
* drivers without flush support don't have to worry
* about them.
*/
- if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) && !q->flush_flags) {
+ if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ !(blk_queue_flush(q) || blk_queue_fua(q))) {
bio->bi_rw &= ~(REQ_FLUSH | REQ_FUA);
if (!nr_sectors) {
err = 0;
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 070d7c7..e07ca6c 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -95,17 +95,18 @@ enum {
static bool blk_kick_flush(struct request_queue *q,
struct blk_flush_queue *fq);
-static unsigned int blk_flush_policy(unsigned int fflags, struct request *rq)
+static unsigned int blk_flush_policy(struct request *rq)
{
+ struct request_queue *q = rq->q;
unsigned int policy = 0;
if (blk_rq_sectors(rq))
policy |= REQ_FSEQ_DATA;
- if (fflags & REQ_FLUSH) {
+ if (blk_queue_flush(q)) {
if (rq->cmd_flags & REQ_FLUSH)
policy |= REQ_FSEQ_PREFLUSH;
- if (!(fflags & REQ_FUA) && (rq->cmd_flags & REQ_FUA))
+ if (!blk_queue_fua(q) && (rq->cmd_flags & REQ_FUA))
policy |= REQ_FSEQ_POSTFLUSH;
}
return policy;
@@ -385,8 +386,7 @@ static void mq_flush_data_end_io(struct request *rq, int error)
void blk_insert_flush(struct request *rq)
{
struct request_queue *q = rq->q;
- unsigned int fflags = q->flush_flags; /* may change, cache */
- unsigned int policy = blk_flush_policy(fflags, rq);
+ unsigned int policy = blk_flush_policy(rq);
struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);
/*
@@ -394,7 +394,7 @@ void blk_insert_flush(struct request *rq)
* REQ_FLUSH and FUA for the driver.
*/
rq->cmd_flags &= ~REQ_FLUSH;
- if (!(fflags & REQ_FUA))
+ if (!blk_queue_fua(q))
rq->cmd_flags &= ~REQ_FUA;
/*
diff --git a/block/blk-settings.c b/block/blk-settings.c
index c7bb666..77dd6da 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -820,26 +820,6 @@ void blk_queue_update_dma_alignment(struct request_queue *q, int mask)
}
EXPORT_SYMBOL(blk_queue_update_dma_alignment);
-/**
- * blk_queue_flush - configure queue's cache flush capability
- * @q: the request queue for the device
- * @flush: 0, REQ_FLUSH or REQ_FLUSH | REQ_FUA
- *
- * Tell block layer cache flush capability of @q. If it supports
- * flushing, REQ_FLUSH should be set. If it supports bypassing
- * write cache for individual writes, REQ_FUA should be set.
- */
-void blk_queue_flush(struct request_queue *q, unsigned int flush)
-{
- WARN_ON_ONCE(flush & ~(REQ_FLUSH | REQ_FUA));
-
- if (WARN_ON_ONCE(!(flush & REQ_FLUSH) && (flush & REQ_FUA)))
- flush &= ~REQ_FUA;
-
- q->flush_flags = flush & (REQ_FLUSH | REQ_FUA);
-}
-EXPORT_SYMBOL_GPL(blk_queue_flush);
-
void blk_queue_flush_queueable(struct request_queue *q, bool queueable)
{
q->flush_not_queueable = !queueable;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 3a93fd2..5dd30a5 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2762,7 +2762,8 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
q->backing_dev_info.congested_data = device;
blk_queue_make_request(q, drbd_make_request);
- blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
/* Setting the max_hw_sectors to an odd value of 8kibyte here
This triggers a max_bio_size message upon first attach or connect */
blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index a3d1293..297a91f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -937,7 +937,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
if (!(lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync)
- blk_queue_flush(lo->lo_queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, lo->lo_queue);
loop_update_dio(lo);
set_capacity(lo->lo_disk, size);
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 3995a9e..0c41ce4 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3910,7 +3910,8 @@ skip_create_disk:
* write back cache is not supported in the device. FUA depends on
* write back cache support, hence setting flush support to zero.
*/
- blk_queue_flush(dd->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, dd->queue);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, dd->queue);
/* Signal trim support */
if (dd->trim_supp == true) {
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 3b4be71..f6bda16 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -750,9 +750,11 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
nbd->disk->queue);
if (nbd->flags & NBD_FLAG_SEND_FLUSH)
- blk_queue_flush(nbd->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH,
+ nbd->disk->queue);
else
- blk_queue_flush(nbd->disk->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH,
+ nbd->disk->queue);
thread = kthread_run(nbd_thread_send, nbd, "%s",
nbd_name(nbd));
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 3f8a0a0..d03f06a 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -437,7 +437,7 @@ static int osdblk_init_disk(struct osdblk_device *osdev)
blk_queue_stack_limits(q, osd_request_queue(osdev->osd));
blk_queue_prep_rq(q, blk_queue_start_tag);
- blk_queue_flush(q, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
disk->queue = q;
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 95c524b..5985fdc 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -468,7 +468,7 @@ static int ps3disk_probe(struct ps3_system_bus_device *_dev)
blk_queue_dma_alignment(queue, dev->blk_size-1);
blk_queue_logical_block_size(queue, dev->blk_size);
- blk_queue_flush(queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, queue);
blk_queue_max_segments(queue, -1);
blk_queue_max_segment_size(queue, dev->bounce_size);
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index a15cc2e..68d0e22 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -4409,7 +4409,8 @@ static int skd_cons_disk(struct skd_device *skdev)
disk->queue = q;
q->queuedata = skdev;
- blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
blk_queue_max_segments(q, skdev->sgs_per_request);
blk_queue_max_hw_sectors(q, SKD_N_MAX_SECTORS);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index c6d3bc2..b8a508b 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -489,9 +489,9 @@ static void virtblk_update_cache_mode(struct virtio_device *vdev)
struct virtio_blk *vblk = vdev->priv;
if (writeback)
- blk_queue_flush(vblk->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, vblk->disk->queue);
else
- blk_queue_flush(vblk->disk->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, vblk->disk->queue);
revalidate_disk(vblk->disk);
}
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 876763f..4a8663c 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -478,7 +478,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
vbd->type |= VDISK_REMOVABLE;
q = bdev_get_queue(bdev);
- if (q && q->flush_flags)
+ if (q && (blk_queue_flush(q) || blk_queue_fua(q)))
vbd->flush_support = true;
if (q && blk_queue_secdiscard(q))
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 55f795d..356887b 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -194,6 +194,7 @@ struct blkfront_info
unsigned int nr_ring_pages;
struct request_queue *rq;
unsigned int feature_flush;
+ unsigned int feature_fua;
unsigned int feature_discard:1;
unsigned int feature_secdiscard:1;
unsigned int discard_granularity;
@@ -761,19 +762,15 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
* implement it the same way. (It's also a FLUSH+FUA,
* since it is guaranteed ordered WRT previous writes.)
*/
- switch (info->feature_flush &
- ((REQ_FLUSH|REQ_FUA))) {
- case REQ_FLUSH|REQ_FUA:
+ if (blk_queue_flush(info->rq) &&
+ blk_queue_fua(info->rq))
ring_req->operation =
BLKIF_OP_WRITE_BARRIER;
- break;
- case REQ_FLUSH:
+ else if (blk_queue_flush(info->rq))
ring_req->operation =
BLKIF_OP_FLUSH_DISKCACHE;
- break;
- default:
+ else
ring_req->operation = 0;
- }
}
ring_req->u.rw.nr_segments = num_grant;
if (unlikely(require_extra_req)) {
@@ -864,9 +861,9 @@ static inline bool blkif_request_flush_invalid(struct request *req,
{
return ((req->cmd_type != REQ_TYPE_FS) ||
((req->op == REQ_OP_FLUSH) &&
- !(info->feature_flush & REQ_FLUSH)) ||
+ !(blk_queue_flush(info->rq))) ||
((req->cmd_flags & REQ_FUA) &&
- !(info->feature_flush & REQ_FUA)));
+ !(blk_queue_fua(info->rq))));
}
static int blkif_queue_rq(struct blk_mq_hw_ctx *hctx,
@@ -983,23 +980,30 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size,
return 0;
}
-static const char *flush_info(unsigned int feature_flush)
+static const char *flush_info(struct blkfront_info *info)
{
- switch (feature_flush & ((REQ_FLUSH | REQ_FUA))) {
- case REQ_FLUSH|REQ_FUA:
+ if (blk_queue_flush(info->rq) && blk_queue_fua(info->rq))
return "barrier: enabled;";
- case REQ_FLUSH:
+ else if (blk_queue_flush(info->rq))
return "flush diskcache: enabled;";
- default:
+ else
return "barrier or flush: disabled;";
- }
}
static void xlvbd_flush(struct blkfront_info *info)
{
- blk_queue_flush(info->rq, info->feature_flush);
+ if (info->feature_flush)
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, info->rq);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, info->rq);
+
+ if (info->feature_fua)
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, info->rq);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, info->rq);
+
pr_info("blkfront: %s: %s %s %s %s %s\n",
- info->gd->disk_name, flush_info(info->feature_flush),
+ info->gd->disk_name, flush_info(info),
"persistent grants:", info->feature_persistent ?
"enabled;" : "disabled;", "indirect descriptors:",
info->max_indirect_segments ? "enabled;" : "disabled;");
@@ -1618,6 +1622,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
if (unlikely(error)) {
if (error == -EOPNOTSUPP)
error = 0;
+ info->feature_fua = 0;
info->feature_flush = 0;
xlvbd_flush(info);
}
@@ -2312,6 +2317,7 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
unsigned int indirect_segments;
info->feature_flush = 0;
+ info->feature_fua = 0;
err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
"feature-barrier", "%d", &barrier,
@@ -2324,8 +2330,11 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
*
* If there are barriers, then we use flush.
*/
- if (!err && barrier)
- info->feature_flush = REQ_FLUSH | REQ_FUA;
+ if (!err && barrier) {
+ info->feature_flush = 1;
+ info->feature_fua = 1;
+ }
+
/*
* And if there is "feature-flush-cache" use that above
* barriers.
@@ -2334,8 +2343,10 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
"feature-flush-cache", "%d", &flush,
NULL);
- if (!err && flush)
- info->feature_flush = REQ_FLUSH;
+ if (!err && flush) {
+ info->feature_flush = 1;
+ info->feature_fua = 0;
+ }
err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
"feature-discard", "%d", &discard,
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 6474ed3..4501ca7 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -522,8 +522,8 @@ static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
static void update_flush(ide_drive_t *drive)
{
u16 *id = drive->id;
- unsigned flush = 0;
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, drive->queue);
if (drive->dev_flags & IDE_DFLAG_WCACHE) {
unsigned long long capacity;
int barrier;
@@ -546,12 +546,10 @@ static void update_flush(ide_drive_t *drive)
drive->name, barrier ? "" : "not ");
if (barrier) {
- flush = REQ_FLUSH;
blk_queue_prep_rq(drive->queue, idedisk_prep_fn);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, drive->queue);
}
}
-
- blk_queue_flush(drive->queue, flush);
}
ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index b11f7f4..3d75a0f 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -820,8 +820,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
clear_bit(QUEUE_FLAG_ADD_RANDOM, &d->disk->queue->queue_flags);
set_bit(QUEUE_FLAG_DISCARD, &d->disk->queue->queue_flags);
- blk_queue_flush(q, REQ_FLUSH|REQ_FUA);
-
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
return 0;
}
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 7210e53..1ce40cf 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1336,13 +1336,21 @@ static void dm_table_verify_integrity(struct dm_table *t)
static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
- unsigned flush = (*(unsigned *)data);
struct request_queue *q = bdev_get_queue(dev->bdev);
- return q && (q->flush_flags & flush);
+ return q && blk_queue_flush(q);
}
-static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
+static int device_fua_capable(struct dm_target *ti, struct dm_dev *dev,
+ sector_t start, sector_t len, void *data)
+{
+ struct request_queue *q = bdev_get_queue(dev->bdev);
+
+ return q && blk_queue_fua(q);
+}
+
+static bool dm_table_supports_flush(struct dm_table *t,
+ iterate_devices_callout_fn callout_fn)
{
struct dm_target *ti;
unsigned i = 0;
@@ -1363,7 +1371,7 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
return true;
if (ti->type->iterate_devices &&
- ti->type->iterate_devices(ti, device_flush_capable, &flush))
+ ti->type->iterate_devices(ti, callout_fn, NULL))
return true;
}
@@ -1494,8 +1502,6 @@ static bool dm_table_supports_discards(struct dm_table *t)
void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
struct queue_limits *limits)
{
- unsigned flush = 0;
-
/*
* Copy table's limits to the DM device's request_queue
*/
@@ -1506,12 +1512,14 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
- if (dm_table_supports_flush(t, REQ_FLUSH)) {
- flush |= REQ_FLUSH;
- if (dm_table_supports_flush(t, REQ_FUA))
- flush |= REQ_FUA;
- }
- blk_queue_flush(q, flush);
+ if (dm_table_supports_flush(t, device_flush_capable)) {
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ if (dm_table_supports_flush(t, device_fua_capable))
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ } else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, q);
if (!dm_table_discard_zeroes_data(t))
q->limits.discard_zeroes_data = 0;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cdd37f..f0604a0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5040,7 +5040,8 @@ static int md_alloc(dev_t dev, char *name)
disk->fops = &md_fops;
disk->private_data = mddev;
disk->queue = mddev->queue;
- blk_queue_flush(mddev->queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, mddev->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, mddev->queue);
/* Allow extended partitions. This makes the
* 'mdp' device redundant, but we can't really
* remove it now.
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index da07670..3d88b55 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -1196,6 +1196,7 @@ ioerr:
int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
{
+ struct request_queue *q = rdev->bdev->bd_disk->queue;
struct r5l_log *log;
if (PAGE_SIZE != 4096)
@@ -1205,7 +1206,7 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
return -ENOMEM;
log->rdev = rdev;
- log->need_cache_flush = (rdev->bdev->bd_disk->queue->flush_flags != 0);
+ log->need_cache_flush = (blk_queue_flush(q) || blk_queue_fua(q));
log->uuid_checksum = crc32c_le(~0, rdev->mddev->uuid,
sizeof(rdev->mddev->uuid));
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index dabd152..bd504b4 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2276,7 +2276,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) ||
card->ext_csd.rel_sectors)) {
md->flags |= MMC_BLK_REL_WR;
- blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, md->queue.queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, md->queue.queue);
}
if (mmc_card_mmc(card) &&
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 67da1cd..4462627 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -409,7 +409,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
goto error3;
if (tr->flush)
- blk_queue_flush(new->rq, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, new->rq);
new->rq->queuedata = new;
blk_queue_logical_block_size(new->rq, tr->blksize);
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 504a604..bba850d 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1177,8 +1177,10 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
}
if (ctrl->stripe_size)
blk_queue_chunk_sectors(ns->queue, ctrl->stripe_size >> 9);
- if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
- blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA);
+ if (ctrl->vwc & NVME_CTRL_VWC_PRESENT) {
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, ns->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, ns->queue);
+ }
blk_queue_virt_boundary(ns->queue, ctrl->page_size - 1);
disk->major = nvme_major;
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6882ab7..7aedac3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -137,15 +137,18 @@ static const char *sd_cache_types[] = {
static void sd_set_flush_flag(struct scsi_disk *sdkp)
{
- unsigned flush = 0;
+ struct request_queue *q = sdkp->disk->queue;
if (sdkp->WCE) {
- flush |= REQ_FLUSH;
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
if (sdkp->DPOFUA)
- flush |= REQ_FUA;
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ } else {
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, q);
}
-
- blk_queue_flush(sdkp->disk->queue, flush);
}
static ssize_t
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 8d3d197..c9c07e3 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -659,11 +659,11 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
* Force writethrough using WRITE_FUA if a volatile write cache
* is not enabled, or if initiator set the Force Unit Access bit.
*/
- if (q->flush_flags & REQ_FUA) {
+ if (blk_queue_fua(q)) {
if (cmd->se_cmd_flags & SCF_FUA) {
op = REQ_OP_WRITE;
op_flags = WRITE_FUA;
- } else if (!(q->flush_flags & REQ_FLUSH)) {
+ } else if (!blk_queue_flush(q)) {
op = REQ_OP_WRITE;
op_flags = WRITE_FUA;
} else {
@@ -812,7 +812,7 @@ static bool iblock_get_write_cache(struct se_device *dev)
struct block_device *bd = ib_dev->ibd_bd;
struct request_queue *q = bdev_get_queue(bd);
- return q->flush_flags & REQ_FLUSH;
+ return blk_queue_flush(q);
}
static const struct target_backend_ops iblock_ops = {
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 9c36ffc..663e3aa 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -434,7 +434,6 @@ struct request_queue {
/*
* for flush operations
*/
- unsigned int flush_flags;
unsigned int flush_not_queueable:1;
struct blk_flush_queue *fq;
@@ -492,6 +491,8 @@ struct request_queue {
#define QUEUE_FLAG_INIT_DONE 20 /* queue is initialized */
#define QUEUE_FLAG_NO_SG_MERGE 21 /* don't attempt to merge SG segments*/
#define QUEUE_FLAG_POLL 22 /* IO polling enabled if set */
+#define QUEUE_FLAG_FLUSH 23 /* supports FLUSH/PREFLUSH */
+#define QUEUE_FLAG_FUA 24 /* supports FUA */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -580,6 +581,8 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
#define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
#define blk_queue_secdiscard(q) (blk_queue_discard(q) && \
test_bit(QUEUE_FLAG_SECDISCARD, &(q)->queue_flags))
+#define blk_queue_flush(q) test_bit(QUEUE_FLAG_FLUSH, &(q)->queue_flags)
+#define blk_queue_fua(q) test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags)
#define blk_noretry_request(rq) \
((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
@@ -1010,7 +1013,6 @@ extern void blk_queue_update_dma_alignment(struct request_queue *, int);
extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
-extern void blk_queue_flush(struct request_queue *q, unsigned int flush);
extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 28/35] blktrace: get op from req->op/bio->bi_op |
| Message-ID | <r5NLm-PN-47@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
The bio and request struct now store the operation in
bio->bi_op/request->op. This patch has blktrace not
check bi_rw/cmd_flags.
This patch is only compile tested.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
include/linux/blktrace_api.h | 2 +-
include/trace/events/bcache.h | 12 ++++++----
include/trace/events/block.h | 31 +++++++++++++++++---------
kernel/trace/blktrace.c | 52 +++++++++++++++++++++++--------------------
4 files changed, 57 insertions(+), 40 deletions(-)
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index afc1343..ee25ba4 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -109,7 +109,7 @@ static inline int blk_cmd_buf_len(struct request *rq)
}
extern void blk_dump_cmd(char *buf, struct request *rq);
-extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
+extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h
index 981acf7..8abe564 100644
--- a/include/trace/events/bcache.h
+++ b/include/trace/events/bcache.h
@@ -27,7 +27,8 @@ DECLARE_EVENT_CLASS(bcache_request,
__entry->sector = bio->bi_iter.bi_sector;
__entry->orig_sector = bio->bi_iter.bi_sector - 16;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
@@ -101,7 +102,8 @@ DECLARE_EVENT_CLASS(bcache_bio,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u",
@@ -136,7 +138,8 @@ TRACE_EVENT(bcache_read,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->cache_hit = hit;
__entry->bypass = bypass;
),
@@ -167,7 +170,8 @@ TRACE_EVENT(bcache_write,
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->writeback = writeback;
__entry->bypass = bypass;
),
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index e8a5eca..4416dcd 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -84,7 +84,8 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
0 : blk_rq_sectors(rq);
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -162,7 +163,7 @@ TRACE_EVENT(block_rq_complete,
__entry->nr_sector = nr_bytes >> 9;
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags, nr_bytes);
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -198,7 +199,8 @@ DECLARE_EVENT_CLASS(block_rq,
__entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_bytes(rq) : 0;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -272,7 +274,8 @@ TRACE_EVENT(block_bio_bounce,
bio->bi_bdev->bd_dev : 0;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -310,7 +313,8 @@ TRACE_EVENT(block_bio_complete,
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
__entry->error = error;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u [%d]",
@@ -337,7 +341,8 @@ DECLARE_EVENT_CLASS(block_bio_merge,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -404,7 +409,8 @@ TRACE_EVENT(block_bio_queue,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -432,7 +438,7 @@ DECLARE_EVENT_CLASS(block_get_rq,
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
__entry->sector = bio ? bio->bi_iter.bi_sector : 0;
__entry->nr_sector = bio ? bio_sectors(bio) : 0;
- blk_fill_rwbs(__entry->rwbs,
+ blk_fill_rwbs(__entry->rwbs, bio ? bio->bi_op : 0,
bio ? bio->bi_rw : 0, __entry->nr_sector);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -567,7 +573,8 @@ TRACE_EVENT(block_split,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->new_sector = new_sector;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -610,7 +617,8 @@ TRACE_EVENT(block_bio_remap,
__entry->nr_sector = bio_sectors(bio);
__entry->old_dev = dev;
__entry->old_sector = from;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
@@ -656,7 +664,8 @@ TRACE_EVENT(block_rq_remap,
__entry->old_dev = dev;
__entry->old_sector = from;
__entry->nr_bios = blk_rq_count_bios(rq);
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 2aeb6ff..4a9ac83 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -199,7 +199,8 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
* blk_io_trace structure and places it in a per-cpu subbuffer.
*/
static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
- int rw, u32 what, int error, int pdu_len, void *pdu_data)
+ int op, int op_flags, u32 what, int error, int pdu_len,
+ void *pdu_data)
{
struct task_struct *tsk = current;
struct ring_buffer_event *event = NULL;
@@ -214,13 +215,14 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer))
return;
- what |= ddir_act[rw & WRITE];
- what |= MASK_TC_BIT(rw, SYNC);
- what |= MASK_TC_BIT(rw, RAHEAD);
- what |= MASK_TC_BIT(rw, META);
- what |= MASK_TC_BIT(rw, DISCARD);
- what |= MASK_TC_BIT(rw, FLUSH);
- what |= MASK_TC_BIT(rw, FUA);
+ what |= ddir_act[op_is_write(op) ? WRITE : READ];
+ what |= MASK_TC_BIT(op_flags, SYNC);
+ what |= MASK_TC_BIT(op_flags, RAHEAD);
+ what |= MASK_TC_BIT(op_flags, META);
+ what |= MASK_TC_BIT(op_flags, FLUSH);
+ what |= MASK_TC_BIT(op_flags, FUA);
+ if (op == REQ_OP_DISCARD)
+ what |= BLK_TC_ACT(BLK_TC_DISCARD);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -708,11 +710,11 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
what |= BLK_TC_ACT(BLK_TC_PC);
- __blk_add_trace(bt, 0, nr_bytes, rq->cmd_flags,
+ __blk_add_trace(bt, 0, nr_bytes, rq->op, rq->cmd_flags,
what, rq->errors, rq->cmd_len, rq->cmd);
} else {
what |= BLK_TC_ACT(BLK_TC_FS);
- __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes,
+ __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, rq->op,
rq->cmd_flags, what, rq->errors, 0, NULL);
}
}
@@ -770,7 +772,7 @@ static void blk_add_trace_bio(struct request_queue *q, struct bio *bio,
return;
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, what, error, 0, NULL);
+ bio->bi_op, bio->bi_rw, what, error, 0, NULL);
}
static void blk_add_trace_bio_bounce(void *ignore,
@@ -818,7 +820,8 @@ static void blk_add_trace_getrq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_GETRQ, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_GETRQ, 0, 0,
+ NULL);
}
}
@@ -833,7 +836,7 @@ static void blk_add_trace_sleeprq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ,
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_SLEEPRQ,
0, 0, NULL);
}
}
@@ -843,7 +846,7 @@ static void blk_add_trace_plug(void *ignore, struct request_queue *q)
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
}
static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
@@ -860,7 +863,7 @@ static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
else
what = BLK_TA_UNPLUG_TIMER;
- __blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
+ __blk_add_trace(bt, 0, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
}
}
@@ -874,8 +877,9 @@ static void blk_add_trace_split(void *ignore,
__be64 rpdu = cpu_to_be64(pdu);
__blk_add_trace(bt, bio->bi_iter.bi_sector,
- bio->bi_iter.bi_size, bio->bi_rw, BLK_TA_SPLIT,
- bio->bi_error, sizeof(rpdu), &rpdu);
+ bio->bi_iter.bi_size, bio->bi_op, bio->bi_rw,
+ BLK_TA_SPLIT, bio->bi_error, sizeof(rpdu),
+ &rpdu);
}
}
@@ -907,7 +911,7 @@ static void blk_add_trace_bio_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
+ bio->bi_op, bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
sizeof(r), &r);
}
@@ -940,7 +944,7 @@ static void blk_add_trace_rq_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
- rq_data_dir(rq), BLK_TA_REMAP, !!rq->errors,
+ rq_data_dir(rq), 0, BLK_TA_REMAP, !!rq->errors,
sizeof(r), &r);
}
@@ -965,10 +969,10 @@ void blk_add_driver_data(struct request_queue *q,
return;
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
else
- __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
}
EXPORT_SYMBOL_GPL(blk_add_driver_data);
@@ -1767,16 +1771,16 @@ void blk_dump_cmd(char *buf, struct request *rq)
}
}
-void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
+void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
if (rw & REQ_FLUSH)
rwbs[i++] = 'F';
- if (rw & WRITE)
+ if (op == REQ_OP_WRITE)
rwbs[i++] = 'W';
- else if (rw & REQ_DISCARD)
+ else if (op == REQ_OP_DISCARD)
rwbs[i++] = 'D';
else if (bytes)
rwbs[i++] = 'R';
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 29/35] ide cd: do not set REQ_WRITE on requests. |
| Message-ID | <r5NLm-PN-55@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com> The block layer will set the correct READ/WRITE operation flags/fields when creating a request, so there is not need for drivers to set the REQ_WRITE flag. This patch is compile tested only. Signed-off-by: Mike Christie <mchristi@redhat.com> --- drivers/ide/ide-cd_ioctl.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c index 474173e..5887a7a 100644 --- a/drivers/ide/ide-cd_ioctl.c +++ b/drivers/ide/ide-cd_ioctl.c @@ -459,9 +459,6 @@ int ide_cdrom_packet(struct cdrom_device_info *cdi, layer. the packet must be complete, as we do not touch it at all. */ - if (cgc->data_direction == CGC_DATA_WRITE) - flags |= REQ_WRITE; - if (cgc->sense) memset(cgc->sense, 0, sizeof(struct request_sense)); -- 1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 27/35] drivers: set request op to REQ_OP |
| Message-ID | <r5NLm-PN-53@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has the block drivers use the request->op for REQ_OP
operations and cmd_flags for rq_flag_bits.
I have only tested scsi and rbd.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/block/loop.c | 6 +++---
drivers/block/mtip32xx/mtip32xx.c | 2 +-
drivers/block/nbd.c | 2 +-
drivers/block/rbd.c | 2 +-
drivers/block/skd_main.c | 11 ++++-------
drivers/block/xen-blkfront.c | 8 +++++---
drivers/md/dm.c | 2 +-
drivers/mmc/card/block.c | 7 +++----
drivers/mmc/card/queue.c | 6 ++----
drivers/mmc/card/queue.h | 5 ++++-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/pci.c | 4 ++--
drivers/scsi/sd.c | 25 ++++++++++++++++---------
13 files changed, 44 insertions(+), 38 deletions(-)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 423f4ca..e771bab 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -538,7 +538,7 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq)
if (rq->cmd_flags & REQ_WRITE) {
if (rq->cmd_flags & REQ_FLUSH)
ret = lo_req_flush(lo, rq);
- else if (rq->cmd_flags & REQ_DISCARD)
+ else if (rq->op == REQ_OP_DISCARD)
ret = lo_discard(lo, rq, pos);
else if (lo->transfer)
ret = lo_write_transfer(lo, rq, pos);
@@ -1653,8 +1653,8 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && !(cmd->rq->cmd_flags & (REQ_FLUSH |
- REQ_DISCARD)))
+ if (lo->use_dio && (!(cmd->rq->cmd_flags & REQ_FLUSH) ||
+ cmd->rq->op == REQ_OP_DISCARD))
cmd->use_aio = true;
else
cmd->use_aio = false;
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 9b180db..3995a9e 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3670,7 +3670,7 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq)
return -ENXIO;
}
- if (rq->cmd_flags & REQ_DISCARD) {
+ if (rq->op == REQ_OP_DISCARD) {
int err;
err = mtip_send_trim(dd, blk_rq_pos(rq), blk_rq_sectors(rq));
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index e4c5cc1..dd8f3e9 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -242,7 +242,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
type = NBD_CMD_DISC;
- else if (req->cmd_flags & REQ_DISCARD)
+ else if (req->op == REQ_OP_DISCARD)
type = NBD_CMD_TRIM;
else if (req->cmd_flags & REQ_FLUSH)
type = NBD_CMD_FLUSH;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4a87678..1d0f464 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3373,7 +3373,7 @@ static void rbd_queue_workfn(struct work_struct *work)
goto err;
}
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
op_type = OBJ_OP_DISCARD;
else if (rq->cmd_flags & REQ_WRITE)
op_type = OBJ_OP_WRITE;
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 586f916..f89a0c8 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -576,7 +576,6 @@ static void skd_request_fn(struct request_queue *q)
struct request *req = NULL;
struct skd_scsi_request *scsi_req;
struct page *page;
- unsigned long io_flags;
int error;
u32 lba;
u32 count;
@@ -624,12 +623,11 @@ static void skd_request_fn(struct request_queue *q)
lba = (u32)blk_rq_pos(req);
count = blk_rq_sectors(req);
data_dir = rq_data_dir(req);
- io_flags = req->cmd_flags;
- if (io_flags & REQ_FLUSH)
+ if (req->cmd_flags & REQ_FLUSH)
flush++;
- if (io_flags & REQ_FUA)
+ if (req->cmd_flags & REQ_FUA)
fua++;
pr_debug("%s:%s:%d new req=%p lba=%u(0x%x) "
@@ -735,7 +733,7 @@ static void skd_request_fn(struct request_queue *q)
else
skreq->sg_data_dir = SKD_DATA_DIR_HOST_TO_CARD;
- if (io_flags & REQ_DISCARD) {
+ if (req->op == REQ_OP_DISCARD) {
page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
if (!page) {
pr_err("request_fn:Page allocation failed.\n");
@@ -852,9 +850,8 @@ static void skd_end_request(struct skd_device *skdev,
struct skd_request_context *skreq, int error)
{
struct request *req = skreq->req;
- unsigned int io_flags = req->cmd_flags;
- if ((io_flags & REQ_DISCARD) &&
+ if ((req->op == REQ_OP_DISCARD) &&
(skreq->discard_page == 1)) {
pr_debug("%s:%s:%d, free the page!",
skdev->name, __func__, __LINE__);
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 7ba2ed1..34e8f1a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -842,7 +842,8 @@ static int blkif_queue_request(struct request *req, struct blkfront_ring_info *r
if (unlikely(rinfo->dev_info->connected != BLKIF_STATE_CONNECTED))
return 1;
- if (unlikely(req->cmd_flags & (REQ_DISCARD | REQ_SECURE)))
+ if (unlikely(req->op == REQ_OP_DISCARD ||
+ req->cmd_flags & REQ_SECURE))
return blkif_queue_discard_req(req, rinfo);
else
return blkif_queue_rw_req(req, rinfo);
@@ -2051,8 +2052,9 @@ static int blkif_recover(struct blkfront_info *info)
/*
* Get the bios in the request so we can re-queue them.
*/
- if (copy[i].request->cmd_flags &
- (REQ_FLUSH | REQ_FUA | REQ_DISCARD | REQ_SECURE)) {
+ if (copy[i].request->cmd_flags & REQ_FLUSH ||
+ copy[i].request->op == REQ_OP_DISCARD ||
+ copy[i].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
/*
* Flush operations don't contain bios, so
* we need to requeue the whole request
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 38c7d93..53f7b1e 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1322,7 +1322,7 @@ static void dm_done(struct request *clone, int error, bool mapped)
r = rq_end_io(tio->ti, clone, error, &tio->info);
}
- if (unlikely(r == -EREMOTEIO && (clone->cmd_flags & REQ_WRITE_SAME) &&
+ if (unlikely(r == -EREMOTEIO && (clone->op == REQ_OP_WRITE_SAME) &&
!clone->q->limits.max_write_same_sectors))
disable_write_same(tio->md);
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 47bc87d..1f84a44 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1690,8 +1690,7 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req)
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
- if (next->cmd_flags & REQ_DISCARD ||
- next->cmd_flags & REQ_FLUSH)
+ if (next->op == REQ_OP_DISCARD || next->cmd_flags & REQ_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
@@ -2132,7 +2131,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
}
mq->flags &= ~MMC_QUEUE_NEW_REQUEST;
- if (cmd_flags & REQ_DISCARD) {
+ if (req && req->op == REQ_OP_DISCARD) {
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
@@ -2156,7 +2155,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
out:
if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) ||
- (cmd_flags & MMC_REQ_SPECIAL_MASK))
+ mmc_req_is_special(req))
/*
* Release host when there are no more requests
* and after special request(discard, flush) is done.
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 6f4323c..9fb8d21 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -33,7 +33,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
/*
* We only like normal block requests and discards.
*/
- if (req->cmd_type != REQ_TYPE_FS && !(req->cmd_flags & REQ_DISCARD)) {
+ if (req->cmd_type != REQ_TYPE_FS && req->op != REQ_OP_DISCARD) {
blk_dump_rq_flags(req, "MMC bad request");
return BLKPREP_KILL;
}
@@ -56,7 +56,6 @@ static int mmc_queue_thread(void *d)
down(&mq->thread_sem);
do {
struct request *req = NULL;
- unsigned int cmd_flags = 0;
spin_lock_irq(q->queue_lock);
set_current_state(TASK_INTERRUPTIBLE);
@@ -66,7 +65,6 @@ static int mmc_queue_thread(void *d)
if (req || mq->mqrq_prev->req) {
set_current_state(TASK_RUNNING);
- cmd_flags = req ? req->cmd_flags : 0;
mq->issue_fn(mq, req);
cond_resched();
if (mq->flags & MMC_QUEUE_NEW_REQUEST) {
@@ -81,7 +79,7 @@ static int mmc_queue_thread(void *d)
* has been finished. Do not assign it to previous
* request.
*/
- if (cmd_flags & MMC_REQ_SPECIAL_MASK)
+ if (mmc_req_is_special(req))
mq->mqrq_cur->req = NULL;
mq->mqrq_prev->brq.mrq.data = NULL;
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index 36cddab..f166e5b 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -1,7 +1,10 @@
#ifndef MMC_QUEUE_H
#define MMC_QUEUE_H
-#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
+static inline bool mmc_req_is_special(struct request *req)
+{
+ return req && (req->cmd_flags & REQ_FLUSH || req->op == REQ_OP_DISCARD);
+}
struct request;
struct task_struct;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index f470118..b2e0bce 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -94,7 +94,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
get_capacity(req->rq_disk))
return -EIO;
- if (req->cmd_flags & REQ_DISCARD)
+ if (req->op == REQ_OP_DISCARD)
return tr->discard(dev, block, nsect);
if (rq_data_dir(req) == READ) {
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 720a523..da32c93 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -330,7 +330,7 @@ static int nvme_init_iod(struct request *rq, struct nvme_dev *dev)
int nseg = rq->nr_phys_segments;
unsigned size;
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
size = sizeof(struct nvme_dsm_range);
else
size = blk_rq_bytes(rq);
@@ -646,7 +646,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
if (ret)
return ret;
- if (req->cmd_flags & REQ_DISCARD) {
+ if (req->op == REQ_OP_DISCARD) {
ret = nvme_setup_discard(nvmeq, ns, req, &cmnd);
} else {
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d749da7..e8fbd0f 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1012,7 +1012,8 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
} else if (rq_data_dir(rq) == READ) {
SCpnt->cmnd[0] = READ_6;
} else {
- scmd_printk(KERN_ERR, SCpnt, "Unknown command %llx\n", (unsigned long long) rq->cmd_flags);
+ scmd_printk(KERN_ERR, SCpnt, "Unknown command %d,%llx\n",
+ rq->op, (unsigned long long) rq->cmd_flags);
goto out;
}
@@ -1137,21 +1138,27 @@ static int sd_init_command(struct scsi_cmnd *cmd)
{
struct request *rq = cmd->request;
- if (rq->cmd_flags & REQ_DISCARD)
+ switch (rq->op) {
+ case REQ_OP_DISCARD:
return sd_setup_discard_cmnd(cmd);
- else if (rq->cmd_flags & REQ_WRITE_SAME)
+ case REQ_OP_WRITE_SAME:
return sd_setup_write_same_cmnd(cmd);
- else if (rq->cmd_flags & REQ_FLUSH)
- return sd_setup_flush_cmnd(cmd);
- else
- return sd_setup_read_write_cmnd(cmd);
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
+ if (rq->cmd_flags & REQ_FLUSH)
+ return sd_setup_flush_cmnd(cmd);
+ else
+ return sd_setup_read_write_cmnd(cmd);
+ default:
+ BUG();
+ }
}
static void sd_uninit_command(struct scsi_cmnd *SCpnt)
{
struct request *rq = SCpnt->request;
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
__free_page(rq->completion_data);
if (SCpnt->cmnd != rq->cmd) {
@@ -1768,7 +1775,7 @@ static int sd_done(struct scsi_cmnd *SCpnt)
unsigned char op = SCpnt->cmnd[0];
unsigned char unmap = SCpnt->cmnd[1] & 8;
- if (req->cmd_flags & REQ_DISCARD || req->cmd_flags & REQ_WRITE_SAME) {
+ if (req->op == REQ_OP_DISCARD || req->op == REQ_OP_WRITE_SAME) {
if (!result) {
good_bytes = blk_rq_bytes(req);
scsi_set_resid(SCpnt, 0);
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 21/35] bcache: set bi_op to REQ_OP |
| Message-ID | <r5NLm-PN-57@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has bcache set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
This patch is compile tested only
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/bcache/btree.c | 2 ++
drivers/md/bcache/debug.c | 2 ++
drivers/md/bcache/io.c | 2 +-
drivers/md/bcache/journal.c | 7 ++++---
drivers/md/bcache/movinggc.c | 2 +-
drivers/md/bcache/request.c | 9 +++++----
drivers/md/bcache/super.c | 26 +++++++++++++++-----------
drivers/md/bcache/writeback.c | 4 ++--
8 files changed, 32 insertions(+), 22 deletions(-)
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 22b9e34..752a44f 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -295,6 +295,7 @@ static void bch_btree_node_read(struct btree *b)
closure_init_stack(&cl);
bio = bch_bbio_alloc(b->c);
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = REQ_META|READ_SYNC;
bio->bi_iter.bi_size = KEY_SIZE(&b->key) << 9;
bio->bi_end_io = btree_node_read_endio;
@@ -397,6 +398,7 @@ static void do_btree_node_write(struct btree *b)
b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
+ b->bio->bi_op = REQ_OP_WRITE;
b->bio->bi_rw = REQ_META|WRITE_SYNC|REQ_FUA;
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
bch_bio_map(b->bio, i);
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 52b6bcf..8df9e66 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -52,6 +52,7 @@ void bch_btree_verify(struct btree *b)
bio->bi_bdev = PTR_CACHE(b->c, &b->key, 0)->bdev;
bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = REQ_META|READ_SYNC;
bch_bio_map(bio, sorted);
@@ -114,6 +115,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
check = bio_clone(bio, GFP_NOIO);
if (!check)
return;
+ check->bi_op = REQ_OP_READ;
check->bi_rw |= READ_SYNC;
if (bio_alloc_pages(check, GFP_NOIO))
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 86a0bb8..f10a9a0 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -111,7 +111,7 @@ void bch_bbio_count_io_errors(struct cache_set *c, struct bio *bio,
struct bbio *b = container_of(bio, struct bbio, bio);
struct cache *ca = PTR_CACHE(c, &b->key, 0);
- unsigned threshold = bio->bi_rw & REQ_WRITE
+ unsigned threshold = op_is_write(bio->bi_op)
? c->congested_write_threshold_us
: c->congested_read_threshold_us;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index af3f9f7..68fa0f0 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -54,7 +54,7 @@ reread: left = ca->sb.bucket_size - offset;
bio_reset(bio);
bio->bi_iter.bi_sector = bucket + offset;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_iter.bi_size = len << 9;
bio->bi_end_io = journal_read_endio;
@@ -452,7 +452,7 @@ static void do_journal_discard(struct cache *ca)
bio->bi_iter.bi_sector = bucket_to_sector(ca->set,
ca->sb.d[ja->discard_idx]);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_DISCARD;
+ bio->bi_op = REQ_OP_DISCARD;
bio->bi_max_vecs = 1;
bio->bi_io_vec = bio->bi_inline_vecs;
bio->bi_iter.bi_size = bucket_bytes(ca);
@@ -626,7 +626,8 @@ static void journal_write_unlocked(struct closure *cl)
bio_reset(bio);
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index b929fc9..f33860a 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -163,7 +163,7 @@ static void read_moving(struct cache_set *c)
moving_init(io);
bio = &io->bio.bio;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_end_io = read_moving_endio;
if (bio_alloc_pages(bio, GFP_KERNEL))
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 25fa844..cd6837c 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -253,7 +253,7 @@ static void bch_data_insert_start(struct closure *cl)
trace_bcache_cache_insert(k);
bch_keylist_push(&op->insert_keys);
- n->bi_rw |= REQ_WRITE;
+ n->bi_op = REQ_OP_WRITE;
bch_submit_bbio(n, op->c, k, 0);
} while (n != bio);
@@ -383,7 +383,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (mode == CACHE_MODE_NONE ||
(mode == CACHE_MODE_WRITEAROUND &&
- (bio->bi_rw & REQ_WRITE)))
+ op_is_write(bio->bi_op)))
goto skip;
if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) ||
@@ -404,7 +404,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (!congested &&
mode == CACHE_MODE_WRITEBACK &&
- (bio->bi_rw & REQ_WRITE) &&
+ op_is_write(bio->bi_op) &&
(bio->bi_rw & REQ_SYNC))
goto rescale;
@@ -657,7 +657,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->cache_miss = NULL;
s->d = d;
s->recoverable = 1;
- s->write = (bio->bi_rw & REQ_WRITE) != 0;
+ s->write = op_is_write(bio->bi_op);
s->read_dirty_data = 0;
s->start_time = jiffies;
@@ -925,6 +925,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
+ flush->bi_op = REQ_OP_WRITE;
flush->bi_rw = WRITE_FLUSH;
flush->bi_bdev = bio->bi_bdev;
flush->bi_end_io = request_endio;
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 9e2eac8..b11f7f4 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -212,7 +212,8 @@ static void __write_super(struct cache_sb *sb, struct bio *bio)
unsigned i;
bio->bi_iter.bi_sector = SB_SECTOR;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META;
bio->bi_iter.bi_size = SB_SIZE;
bch_bio_map(bio, NULL);
@@ -333,7 +334,7 @@ static void uuid_io_unlock(struct closure *cl)
up(&c->uuid_write_mutex);
}
-static void uuid_io(struct cache_set *c, unsigned long rw,
+static void uuid_io(struct cache_set *c, int op, unsigned long op_flags,
struct bkey *k, struct closure *parent)
{
struct closure *cl = &c->uuid_write;
@@ -348,7 +349,8 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
for (i = 0; i < KEY_PTRS(k); i++) {
struct bio *bio = bch_bbio_alloc(c);
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = KEY_SIZE(k) << 9;
bio->bi_end_io = uuid_endio;
@@ -357,12 +359,12 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
bch_submit_bbio(bio, c, k, i);
- if (!(rw & WRITE))
+ if (op != REQ_OP_WRITE)
break;
}
bch_extent_to_text(buf, sizeof(buf), k);
- pr_debug("%s UUIDs at %s", rw & REQ_WRITE ? "wrote" : "read", buf);
+ pr_debug("%s UUIDs at %s", op == REQ_OP_WRITE ? "wrote" : "read", buf);
for (u = c->uuids; u < c->uuids + c->nr_uuids; u++)
if (!bch_is_zero(u->uuid, 16))
@@ -381,7 +383,7 @@ static char *uuid_read(struct cache_set *c, struct jset *j, struct closure *cl)
return "bad uuid pointer";
bkey_copy(&c->uuid_bucket, k);
- uuid_io(c, READ_SYNC, k, cl);
+ uuid_io(c, REQ_OP_READ, READ_SYNC, k, cl);
if (j->version < BCACHE_JSET_VERSION_UUIDv1) {
struct uuid_entry_v0 *u0 = (void *) c->uuids;
@@ -426,7 +428,7 @@ static int __uuid_write(struct cache_set *c)
return 1;
SET_KEY_SIZE(&k.key, c->sb.bucket_size);
- uuid_io(c, REQ_WRITE, &k.key, &cl);
+ uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
closure_sync(&cl);
bkey_copy(&c->uuid_bucket, &k.key);
@@ -498,7 +500,8 @@ static void prio_endio(struct bio *bio)
closure_put(&ca->prio);
}
-static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
+static void prio_io(struct cache *ca, uint64_t bucket, int op,
+ unsigned long op_flags)
{
struct closure *cl = &ca->prio;
struct bio *bio = bch_bbio_alloc(ca->set);
@@ -507,7 +510,8 @@ static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
bio->bi_iter.bi_sector = bucket * ca->sb.bucket_size;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = bucket_bytes(ca);
bio->bi_end_io = prio_endio;
@@ -557,7 +561,7 @@ void bch_prio_write(struct cache *ca)
BUG_ON(bucket == -1);
mutex_unlock(&ca->set->bucket_lock);
- prio_io(ca, bucket, REQ_WRITE);
+ prio_io(ca, bucket, REQ_OP_WRITE, 0);
mutex_lock(&ca->set->bucket_lock);
ca->prio_buckets[i] = bucket;
@@ -599,7 +603,7 @@ static void prio_read(struct cache *ca, uint64_t bucket)
ca->prio_last_buckets[bucket_nr] = bucket;
bucket_nr++;
- prio_io(ca, bucket, READ_SYNC);
+ prio_io(ca, bucket, REQ_OP_READ, READ_SYNC);
if (p->csum != bch_crc64(&p->magic, bucket_bytes(ca) - 8))
pr_warn("bad csum reading priorities");
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index b9346cd..96ddf28 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -183,7 +183,7 @@ static void write_dirty(struct closure *cl)
struct keybuf_key *w = io->bio.bi_private;
dirty_init(w);
- io->bio.bi_rw = WRITE;
+ io->bio.bi_op = REQ_OP_WRITE;
io->bio.bi_iter.bi_sector = KEY_START(&w->key);
io->bio.bi_bdev = io->dc->bdev;
io->bio.bi_end_io = dirty_endio;
@@ -256,7 +256,7 @@ static void read_dirty(struct cached_dev *dc)
io->bio.bi_iter.bi_sector = PTR_OFFSET(&w->key, 0);
io->bio.bi_bdev = PTR_CACHE(dc->disk.c,
&w->key, 0)->bdev;
- io->bio.bi_rw = READ;
+ io->bio.bi_op = REQ_OP_READ;
io->bio.bi_end_io = read_dirty_endio;
if (bio_alloc_pages(&io->bio, GFP_KERNEL))
--
1.8.3.1
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:00 +0100 |
| Subject | [PATCH 16/35] nilfs: set bi_op to REQ_OP |
| Message-ID | <r5NLm-PN-59@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has nilfs set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/nilfs2/segbuf.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 7666f1d..7b13e14 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -350,7 +350,8 @@ static void nilfs_end_bio_write(struct bio *bio)
}
static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
- struct nilfs_write_info *wi, int mode)
+ struct nilfs_write_info *wi, int mode,
+ int mode_flags)
{
struct bio *bio = wi->bio;
int err;
@@ -368,7 +369,8 @@ static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
bio->bi_end_io = nilfs_end_bio_write;
bio->bi_private = segbuf;
- bio->bi_rw = mode;
+ bio->bi_op = mode;
+ bio->bi_rw = mode_flags;
submit_bio(bio);
segbuf->sb_nbio++;
@@ -442,7 +444,7 @@ static int nilfs_segbuf_submit_bh(struct nilfs_segment_buffer *segbuf,
return 0;
}
/* bio is FULL */
- err = nilfs_segbuf_submit_bio(segbuf, wi, mode);
+ err = nilfs_segbuf_submit_bio(segbuf, wi, mode, 0);
/* never submit current bh */
if (likely(!err))
goto repeat;
@@ -466,19 +468,19 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
{
struct nilfs_write_info wi;
struct buffer_head *bh;
- int res = 0, rw = WRITE;
+ int res = 0;
wi.nilfs = nilfs;
nilfs_segbuf_prepare_write(segbuf, &wi);
list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, rw);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
if (unlikely(res))
goto failed_bio;
}
list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, rw);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
if (unlikely(res))
goto failed_bio;
}
@@ -488,8 +490,8 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
* Last BIO is always sent through the following
* submission.
*/
- rw |= REQ_SYNC;
- res = nilfs_segbuf_submit_bio(segbuf, &wi, rw);
+ res = nilfs_segbuf_submit_bio(segbuf, &wi, REQ_OP_WRITE,
+ REQ_SYNC);
}
failed_bio:
--
1.8.3.1
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-02-24 21:10 +0100 |
| Subject | [PATCH 07/35] btrfs: have submit_one_bio users setup bio bi_op |
| Message-ID | <r5NUZ-1ay-3@gated-at.bofh.it> |
| In reply to | #1342385 |
From: Mike Christie <mchristi@redhat.com>
This patch has btrfs's submit_one_bio callers set
the bio->bi_op to a REQ_OP and the bi_rw to rq_flag_bits.
The next patches will continue to convert btrfs,
so submit_bio_hook and merge_bio_hook
related code will be modified to take only the bio. I did
not do it in this patch to try and keep it smaller.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/btrfs/extent_io.c | 88 +++++++++++++++++++++++++++-------------------------
1 file changed, 45 insertions(+), 43 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 454100e..4472d69 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2377,7 +2377,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
int read_mode;
int ret;
- BUG_ON(failed_bio->bi_rw & REQ_WRITE);
+ BUG_ON(failed_bio->bi_op == REQ_OP_WRITE);
ret = btrfs_get_io_failure_record(inode, start, end, &failrec);
if (ret)
@@ -2403,6 +2403,8 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
free_io_failure(inode, failrec);
return -EIO;
}
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = read_mode;
pr_debug("Repair Read Error: submitting new read[%#x] to this_mirror=%d, in_validation=%d\n",
read_mode, failrec->this_mirror, failrec->in_validation);
@@ -2714,8 +2716,8 @@ struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs)
}
-static int __must_check submit_one_bio(int rw, struct bio *bio,
- int mirror_num, unsigned long bio_flags)
+static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
+ unsigned long bio_flags)
{
int ret = 0;
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
@@ -2726,12 +2728,12 @@ static int __must_check submit_one_bio(int rw, struct bio *bio,
start = page_offset(page) + bvec->bv_offset;
bio->bi_private = NULL;
- bio->bi_rw = rw;
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
- ret = tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
- mirror_num, bio_flags, start);
+ ret = tree->ops->submit_bio_hook(page->mapping->host,
+ bio->bi_rw, bio, mirror_num,
+ bio_flags, start);
else
btrfsic_submit_bio(bio);
@@ -2739,20 +2741,20 @@ static int __must_check submit_one_bio(int rw, struct bio *bio,
return ret;
}
-static int merge_bio(int rw, struct extent_io_tree *tree, struct page *page,
+static int merge_bio(struct extent_io_tree *tree, struct page *page,
unsigned long offset, size_t size, struct bio *bio,
unsigned long bio_flags)
{
int ret = 0;
if (tree->ops && tree->ops->merge_bio_hook)
- ret = tree->ops->merge_bio_hook(rw, page, offset, size, bio,
- bio_flags);
+ ret = tree->ops->merge_bio_hook(bio->bi_op, page, offset, size,
+ bio, bio_flags);
BUG_ON(ret < 0);
return ret;
}
-static int submit_extent_page(int rw, struct extent_io_tree *tree,
+static int submit_extent_page(int op, int op_flags, struct extent_io_tree *tree,
struct writeback_control *wbc,
struct page *page, sector_t sector,
size_t size, unsigned long offset,
@@ -2780,10 +2782,9 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
if (prev_bio_flags != bio_flags || !contig ||
force_bio_submit ||
- merge_bio(rw, tree, page, offset, page_size, bio, bio_flags) ||
+ merge_bio(tree, page, offset, page_size, bio, bio_flags) ||
bio_add_page(bio, page, page_size, offset) < page_size) {
- ret = submit_one_bio(rw, bio, mirror_num,
- prev_bio_flags);
+ ret = submit_one_bio(bio, mirror_num, prev_bio_flags);
if (ret < 0) {
*bio_ret = NULL;
return ret;
@@ -2804,6 +2805,8 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
bio_add_page(bio, page, page_size, offset);
bio->bi_end_io = end_io_func;
bio->bi_private = tree;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
if (wbc) {
wbc_init_bio(wbc, bio);
wbc_account_io(wbc, page, page_size);
@@ -2812,7 +2815,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
if (bio_ret)
*bio_ret = bio;
else
- ret = submit_one_bio(rw, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -2876,7 +2879,7 @@ static int __do_readpage(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags, int read_flags,
u64 *prev_em_start)
{
struct inode *inode = page->mapping->host;
@@ -3059,8 +3062,8 @@ static int __do_readpage(struct extent_io_tree *tree,
}
pnr -= page->index;
- ret = submit_extent_page(rw, tree, NULL, page,
- sector, disk_io_size, pg_offset,
+ ret = submit_extent_page(REQ_OP_READ, read_flags, tree, NULL,
+ page, sector, disk_io_size, pg_offset,
bdev, bio, pnr,
end_bio_extent_readpage, mirror_num,
*bio_flags,
@@ -3091,7 +3094,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
struct inode *inode;
@@ -3112,7 +3115,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
for (index = 0; index < nr_pages; index++) {
__do_readpage(tree, pages[index], get_extent, em_cached, bio,
- mirror_num, bio_flags, rw, prev_em_start);
+ mirror_num, bio_flags, 0, prev_em_start);
page_cache_release(pages[index]);
}
}
@@ -3122,7 +3125,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
int nr_pages, get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
u64 start = 0;
@@ -3144,7 +3147,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
index - first_index, start,
end, get_extent, em_cached,
bio, mirror_num, bio_flags,
- rw, prev_em_start);
+ prev_em_start);
start = page_start;
end = start + PAGE_CACHE_SIZE - 1;
first_index = index;
@@ -3155,7 +3158,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached, bio,
- mirror_num, bio_flags, rw,
+ mirror_num, bio_flags,
prev_em_start);
}
@@ -3163,7 +3166,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
struct page *page,
get_extent_t *get_extent,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int read_flags)
{
struct inode *inode = page->mapping->host;
struct btrfs_ordered_extent *ordered;
@@ -3183,7 +3186,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
}
ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
- bio_flags, rw, NULL);
+ bio_flags, read_flags, NULL);
return ret;
}
@@ -3195,9 +3198,9 @@ int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
int ret;
ret = __extent_read_full_page(tree, page, get_extent, &bio, mirror_num,
- &bio_flags, READ);
+ &bio_flags, 0);
if (bio)
- ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -3444,7 +3447,8 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
page->index, cur, end);
}
- ret = submit_extent_page(write_flags, tree, wbc, page,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags,
+ tree, wbc, page,
sector, iosize, pg_offset,
bdev, &epd->bio, max_nr,
end_bio_extent_writepage,
@@ -3484,13 +3488,11 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
size_t pg_offset = 0;
loff_t i_size = i_size_read(inode);
unsigned long end_index = i_size >> PAGE_CACHE_SHIFT;
- int write_flags;
+ int write_flags = 0;
unsigned long nr_written = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
write_flags = WRITE_SYNC;
- else
- write_flags = WRITE;
trace___extent_writepage(page, inode, wbc);
@@ -3734,7 +3736,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
u64 offset = eb->start;
unsigned long i, num_pages;
unsigned long bio_flags = 0;
- int rw = (epd->sync_io ? WRITE_SYNC : WRITE) | REQ_META;
+ int write_flags = (epd->sync_io ? WRITE_SYNC : 0) | REQ_META;
int ret = 0;
clear_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags);
@@ -3748,9 +3750,10 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
clear_page_dirty_for_io(p);
set_page_writeback(p);
- ret = submit_extent_page(rw, tree, wbc, p, offset >> 9,
- PAGE_CACHE_SIZE, 0, bdev, &epd->bio,
- -1, end_bio_extent_buffer_writepage,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags, tree, wbc,
+ p, offset >> 9, PAGE_CACHE_SIZE, 0,
+ bdev, &epd->bio, -1,
+ end_bio_extent_buffer_writepage,
0, epd->bio_flags, bio_flags, false);
epd->bio_flags = bio_flags;
if (ret) {
@@ -4039,13 +4042,13 @@ retry:
static void flush_epd_write_bio(struct extent_page_data *epd)
{
if (epd->bio) {
- int rw = WRITE;
int ret;
+ epd->bio->bi_op = REQ_OP_WRITE;
if (epd->sync_io)
- rw = WRITE_SYNC;
+ epd->bio->bi_rw = WRITE_SYNC;
- ret = submit_one_bio(rw, epd->bio, 0, epd->bio_flags);
+ ret = submit_one_bio(epd->bio, 0, epd->bio_flags);
BUG_ON(ret < 0); /* -ENOMEM */
epd->bio = NULL;
}
@@ -4172,19 +4175,19 @@ int extent_readpages(struct extent_io_tree *tree,
if (nr < ARRAY_SIZE(pagepool))
continue;
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
nr = 0;
}
if (nr)
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
if (em_cached)
free_extent_map(em_cached);
BUG_ON(!list_empty(pages));
if (bio)
- return submit_one_bio(READ, bio, 0, bio_flags);
+ return submit_one_bio(bio, 0, bio_flags);
return 0;
}
@@ -5206,7 +5209,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
err = __extent_read_full_page(tree, page,
get_extent, &bio,
mirror_num, &bio_flags,
- READ | REQ_META);
+ REQ_META);
if (err)
ret = err;
} else {
@@ -5215,8 +5218,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
}
if (bio) {
- err = submit_one_bio(READ | REQ_META, bio, mirror_num,
- bio_flags);
+ err = submit_one_bio(bio, mirror_num, bio_flags);
if (err)
return err;
}
--
1.8.3.1
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