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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-25 15:12:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-25 15:12:46 -0700 |
| commit | e93dd910b906d2bb881f334685eb03431fd3fa48 (patch) | |
| tree | ae8527dcdc9237e1bd7a65490d98e77fbe006307 /include | |
| parent | b4820416dd92bc3df33f261c60ec21b2c4481bec (diff) | |
| parent | e8603136cb04ec2d0c9b4b5be7a071fc003cb399 (diff) | |
Merge tag 'dm-3.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device-mapper fixes from Mike Snitzer:
"A few fixes for dm-snapshot, a 32 bit fix for dm-stats, a couple error
handling fixes for dm-multipath. A fix for the thin provisioning
target to not expose non-zero discard limits if discards are disabled.
Lastly, add two DM module parameters which allow users to tune the
emergency memory reserves that DM mainatins per device -- this helps
fix a long-standing issue for dm-multipath. The conservative default
reserve for request-based dm-multipath devices (256) has proven
problematic for users with many multipathed SCSI devices but
relatively little memory. To responsibly select a smaller value users
should use the new nr_bios tracepoint info (via commit 75afb352
"block: Add nr_bios to block_rq_remap tracepoint") to determine the
peak number of bios their workloads create"
* tag 'dm-3.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: add reserved_bio_based_ios module parameter
dm: add reserved_rq_based_ios module parameter
dm: lower bio-based mempool reservation
dm thin: do not expose non-zero discard limits if discards disabled
dm mpath: disable WRITE SAME if it fails
dm-snapshot: fix performance degradation due to small hash size
dm snapshot: workaround for a false positive lockdep warning
dm stats: fix possible counter corruption on 32-bit systems
dm mpath: do not fail path on -ENOSPC
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/device-mapper.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 653073de09e..ed419c62dde 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -406,13 +406,14 @@ int dm_noflush_suspending(struct dm_target *ti); union map_info *dm_get_mapinfo(struct bio *bio); union map_info *dm_get_rq_mapinfo(struct request *rq); +struct queue_limits *dm_get_queue_limits(struct mapped_device *md); + /* * Geometry functions. */ int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo); int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo); - /*----------------------------------------------------------------- * Functions for manipulating device-mapper tables. *---------------------------------------------------------------*/ |