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
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| @@ -406,13 +406,14 @@ int dm_noflush_suspending(struct dm_target *ti); · 405 unmodified lines | ||
| 406 | 406 | union map_info *dm_get_mapinfo(struct bio *bio); |
| 407 | 407 | union map_info *dm_get_rq_mapinfo(struct request *rq); |
| 408 | 408 | |
| 409 | +struct queue_limits *dm_get_queue_limits(struct mapped_device *md); | |
| 410 | + | |
| 409 | 411 | /* |
| 410 | 412 | * Geometry functions. |
| 411 | 413 | */ |
| 412 | 414 | int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo); |
| 413 | 415 | int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo); |
| 414 | 416 | |
| 415 | − | |
| 416 | 417 | /*----------------------------------------------------------------- |
| 417 | 418 | * Functions for manipulating device-mapper tables. |
| 418 | 419 | *---------------------------------------------------------------*/ |