Shaohua Li 9c573de328 MD: make bio mergeable ...

blk_queue_split marks bio unmergeable, which makes sense for normal bio.
But if dispatching the bio to underlayer disk, the blk_queue_split
checks are invalid, hence it's possible the bio becomes mergeable.

In the reported bug, this bug causes trim against raid0 performance slash
https://bugzilla.kernel.org/show_bug.cgi?id=117051

Reported-and-tested-by: Park Ju Hyung <qkrwngud825@gmail.com>
Fixes: 6ac45aeb6bca(block: avoid to merge splitted bio)
Cc: stable@vger.kernel.org (v4.3+)
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Neil Brown <neilb@suse.de>
Reviewed-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>

2016-04-25 18:21:33 -07:00

..

bcache

bcache: fix cache_set_flush() NULL pointer dereference on OOM

2016-03-08 09:19:10 -07:00

persistent-data

dm space map metadata: remove unused variable in brb_pop()

2015-12-14 09:26:01 -05:00

bitmap.c

Merge tag 'md/4.6-rc2-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2016-04-09 11:23:27 -07:00

bitmap.h

md: fix typos for stipe

2016-03-14 11:36:10 -07:00

dm-bio-prison.c

block: add a bi_error field to struct bio

2015-07-29 08:55:15 -06:00

dm-bio-prison.h

dm bio prison: add dm_cell_promote_or_release()

2015-05-29 14:19:06 -04:00

dm-bio-record.h

…

dm-bufio.c

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-01-12 17:11:47 -08:00

dm-bufio.h

…

dm-builtin.c

…

dm-cache-block-types.h

…

dm-cache-metadata.c

dm cache: make sure every metadata function checks fail_io

2016-03-10 17:12:12 -05:00

dm-cache-metadata.h

dm cache: make sure every metadata function checks fail_io

2016-03-10 17:12:12 -05:00

dm-cache-policy-cleaner.c

- Revert a dm-multipath change that caused a regression for unprivledged

2015-11-04 21:19:53 -08:00

dm-cache-policy-internal.h

dm cache: age and write back cache entries even without active IO

2015-06-11 17:13:01 -04:00

dm-cache-policy-smq.c

dm cache policy smq: clarify that mq registration failure was for 'mq'

2016-03-10 17:12:11 -05:00

dm-cache-policy.c

…

dm-cache-policy.h

dm cache: age and write back cache entries even without active IO

2015-06-11 17:13:01 -04:00

dm-cache-target.c

dm cache: bump the target version

2016-03-10 17:12:12 -05:00

dm-crypt.c

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2016-03-17 11:22:54 -07:00

dm-delay.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-era-target.c

dm persistent data: eliminate unnecessary return values

2015-10-31 19:06:02 -04:00

dm-exception-store.c

- Revert a dm-multipath change that caused a regression for unprivledged

2015-11-04 21:19:53 -08:00

dm-exception-store.h

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-flakey.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-io.c

md: more open-coded offset_in_page()

2016-01-04 10:29:12 -05:00

dm-ioctl.c

dm: allow immutable request-based targets to use blk-mq pdu

2016-02-22 22:34:37 -05:00

dm-kcopyd.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

dm-linear.c

dm linear: remove redundant target name from error messages

2015-10-31 19:06:03 -04:00

dm-log-userspace-base.c

dm: drop NULL test before kmem_cache_destroy() and mempool_destroy()

2015-10-31 19:06:00 -04:00

dm-log-userspace-transfer.c

…

dm-log-userspace-transfer.h

…

dm-log-writes.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-log.c

…

dm-mpath.c

dm mpath: cleanup reinstate_path() et al based on code review

2016-03-10 17:12:04 -05:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-queue-length.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-raid1.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-raid.c

dm raid: fix round up of default region size

2015-10-02 12:02:31 -04:00

dm-region-hash.c

dm: convert ffs to __ffs

2015-10-31 19:06:01 -04:00

dm-round-robin.c

dm round robin: use percpu 'repeat_count' and 'current_path'

2016-02-22 22:34:42 -05:00

dm-service-time.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-snap-persistent.c

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-snap-transient.c

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-snap.c

dm snapshot: disallow the COW and origin devices from being identical

2016-03-10 17:12:09 -05:00

dm-stats.c

dm stats: report precise_timestamps and histogram in @stats_list output

2015-08-18 17:20:03 -04:00

dm-stats.h

dm stats: support precise timestamps

2015-06-17 12:40:40 -04:00

dm-stripe.c

Merge tag 'dm-4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

2015-09-02 16:35:26 -07:00

dm-switch.c

dm switch: simplify conditional in alloc_region_table()

2015-10-31 19:06:06 -04:00

dm-sysfs.c

…

dm-table.c

dm snapshot: disallow the COW and origin devices from being identical

2016-03-10 17:12:09 -05:00

dm-target.c

dm: set DM_TARGET_WILDCARD feature on "error" target

2016-02-22 11:06:21 -05:00

dm-thin-metadata.c

dm thin metadata: don't issue prefetches if a transaction abort has failed

2016-03-10 17:12:09 -05:00

dm-thin-metadata.h

dm thin metadata: add dm_thin_remove_range()

2015-06-11 17:13:04 -04:00

dm-thin.c

dm thin: consistently return -ENOSPC if pool has run out of data space

2016-03-11 16:15:22 -05:00

dm-uevent.c

…

dm-uevent.h

…

dm-verity-fec.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-verity-fec.h

dm verity: add support for forward error correction

2015-12-10 10:39:03 -05:00

dm-verity-target.c

dm: rename target's per_bio_data_size to per_io_data_size

2016-02-22 22:34:37 -05:00

dm-verity.h

dm verity: add ignore_zero_blocks feature

2015-12-10 10:39:03 -05:00

dm-zero.c

block: add a bi_error field to struct bio

2015-07-29 08:55:15 -06:00

dm.c

dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()

2016-03-14 17:04:34 -04:00

dm.h

dm: allow immutable request-based targets to use blk-mq pdu

2016-02-22 22:34:37 -05:00

faulty.c

MD: rename some functions

2016-01-20 13:52:20 -08:00

Kconfig

dm: add missing newline between DM_DEBUG_BLOCK_STACK_TRACING and DM_BUFIO

2016-03-10 17:12:11 -05:00

linear.c

block: kill merge_bvec_fn() completely

2015-08-13 12:31:57 -06:00

linear.h

…

Makefile

dm cache: make the 'mq' policy an alias for 'smq'

2016-03-10 17:12:08 -05:00

md-cluster.c

md-cluster: fix missing memory free

2016-01-24 18:13:18 -08:00

md-cluster.h

md-cluster: append some actions when change bitmap from clustered to none

2016-01-06 11:38:57 +11:00

md.c

MD: make bio mergeable

2016-04-25 18:21:33 -07:00

md.h

md updates for 4.5

2016-01-15 12:28:00 -08:00

multipath.c

md: multipath: don't hardcopy bio in .make_request path

2016-03-14 11:32:26 -07:00

multipath.h

…

raid0.c

md/raid0: remove empty line printk from dump_zones

2016-04-25 08:43:58 -07:00

raid0.h

block: kill merge_bvec_fn() completely

2015-08-13 12:31:57 -06:00

raid1.c

md:raid1: fix a dead loop when read from a WriteMostly disk

2016-03-31 10:04:17 -07:00

raid1.h

md-cluster: Use a small window for resync

2015-10-12 01:32:05 -05:00

raid5-cache.c

raid5-cache: handle journal hotadd in quiesce

2016-01-14 11:49:43 +11:00

raid5.c

md/raid5: Cleanup cpu hotplug notifier

2016-03-17 14:30:15 -07:00

raid5.h

RAID5: revert e9e4c377e2f563 to fix a livelock

2016-02-26 09:44:56 -08:00

raid10.c

raid10: include bio_end_io_list in nr_queued to prevent freeze_array hang

2016-03-17 14:27:01 -07:00

raid10.h

md/raid10: ensure device failure recorded before write request returns.

2015-08-31 19:43:45 +02:00