diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-21 12:11:41 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-21 12:11:41 -0800 |
commit | 7a771ceac771d009f7203c40b256b0608d7ea2f8 (patch) | |
tree | 940260bccb165f47669397515c00900629c01803 /drivers/md/persistent-data/dm-block-manager.c | |
parent | e67bd12d6036ae3de9eeb0ba52e43691264ec850 (diff) | |
parent | d67a5f4b5947aba4bfe9a80a2b86079c215ca755 (diff) |
Merge tag 'dm-4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- Fix dm-raid transient device failure processing and other smaller
tweaks.
- Add journal support to the DM raid target to close the 'write hole'
on raid 4/5/6.
- Fix dm-cache corruption, due to rounding bug, when cache exceeds 2TB.
- Add 'metadata2' feature to dm-cache to separate the dirty bitset out
from other cache metadata. This improves speed of shutting down a
large cache device (which implies writing out dirty bits).
- Fix a memory leak during dm-stats data structure destruction.
- Fix a DM multipath round-robin path selector performance regression
that was caused by less precise balancing across all paths.
- Lastly, introduce a DM core fix for a long-standing DM snapshot
deadlock that is rooted in the complexity of the device stack used in
conjunction with block core maintaining bios on current->bio_list to
manage recursion in generic_make_request(). A more comprehensive fix
to block core (and its hook in the cpu scheduler) would be wonderful
but this DM-specific fix is pragmatic considering how difficult it
has been to make progress on a generic fix.
* tag 'dm-4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (22 commits)
dm: flush queued bios when process blocks to avoid deadlock
dm round robin: revert "use percpu 'repeat_count' and 'current_path'"
dm stats: fix a leaked s->histogram_boundaries array
dm space map metadata: constify dm_space_map structures
dm cache metadata: use cursor api in blocks_are_clean_separate_dirty()
dm persistent data: add cursor skip functions to the cursor APIs
dm cache metadata: use dm_bitset_new() to create the dirty bitset in format 2
dm bitset: add dm_bitset_new()
dm cache metadata: name the cache block that couldn't be loaded
dm cache metadata: add "metadata2" feature
dm cache metadata: use bitset cursor api to load discard bitset
dm bitset: introduce cursor api
dm btree: use GFP_NOFS in dm_btree_del()
dm space map common: memcpy the disk root to ensure it's arch aligned
dm block manager: add unlikely() annotations on dm_bufio error paths
dm cache: fix corruption seen when using cache > 2TB
dm raid: cleanup awkward branching in raid_message() option processing
dm raid: use mddev rather than rdev->mddev
dm raid: use read_disk_sb() throughout
dm raid: add raid4/5/6 journaling support
...
Diffstat (limited to 'drivers/md/persistent-data/dm-block-manager.c')
-rw-r--r-- | drivers/md/persistent-data/dm-block-manager.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c index 758d90cc2733..0863905dee02 100644 --- a/drivers/md/persistent-data/dm-block-manager.c +++ b/drivers/md/persistent-data/dm-block-manager.c @@ -462,7 +462,7 @@ int dm_bm_read_lock(struct dm_block_manager *bm, dm_block_t b, int r; p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); aux = dm_bufio_get_aux_data(to_buffer(*result)); @@ -498,7 +498,7 @@ int dm_bm_write_lock(struct dm_block_manager *bm, return -EPERM; p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); aux = dm_bufio_get_aux_data(to_buffer(*result)); @@ -531,7 +531,7 @@ int dm_bm_read_try_lock(struct dm_block_manager *bm, int r; p = dm_bufio_get(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); if (unlikely(!p)) return -EWOULDBLOCK; @@ -567,7 +567,7 @@ int dm_bm_write_lock_zero(struct dm_block_manager *bm, return -EPERM; p = dm_bufio_new(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); memset(p, 0, dm_bm_block_size(bm)); |