linux_dsm_epyc7002/drivers/md
Joe Thornber 7a7e97ca58 dm thin: performance improvement to discard processing
When processing a discard bio, if the block is already quiesced do the
discard immediately rather than adding the mapping to a list for the
next iteration of the worker thread.

Discarding a fully provisioned 100G thin volume with 64k block size goes
from 860s to 95s with this change.

Clearly there's something wrong with the worker architecture, more
investigation needed.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-11-10 15:25:27 -05:00
..
bcache bcache: Drop unneeded blk_sync_queue() calls 2014-08-04 15:23:04 -07:00
persistent-data dm transaction manager: add support for prefetching blocks of metadata 2014-11-10 15:25:26 -05:00
bitmap.c md/bitmap: remove confusing code from filemap_get_page. 2014-05-29 16:59:47 +10:00
bitmap.h
dm-bio-prison.c dm bio prison: switch to using a red black tree 2014-11-10 15:25:26 -05:00
dm-bio-prison.h dm bio prison: switch to using a red black tree 2014-11-10 15:25:26 -05:00
dm-bio-record.h
dm-bufio.c dm bufio: evict buffers that are past the max age but retain some buffers 2014-11-10 15:25:26 -05:00
dm-bufio.h
dm-builtin.c
dm-cache-block-types.h
dm-cache-metadata.c dm cache metadata: use dm-space-map-metadata.h defined size limits 2014-08-01 12:30:33 -04:00
dm-cache-metadata.h dm cache metadata: use dm-space-map-metadata.h defined size limits 2014-08-01 12:30:33 -04:00
dm-cache-policy-cleaner.c
dm-cache-policy-internal.h
dm-cache-policy-mq.c
dm-cache-policy.c
dm-cache-policy.h
dm-cache-target.c dm bio prison: switch to using a red black tree 2014-11-10 15:25:26 -05:00
dm-crypt.c dm crypt: fix access beyond the end of allocated space 2014-08-28 14:24:09 -04:00
dm-delay.c
dm-era-target.c dm era: check for a non-NULL metadata object before closing it 2014-06-03 13:44:08 -04:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c
dm-io.c dm io: simplify dec_count and sync_io 2014-08-01 12:30:30 -04:00
dm-ioctl.c dm: allow active and inactive tables to share dm_devs 2014-10-05 20:03:35 -04:00
dm-kcopyd.c
dm-linear.c
dm-log-userspace-base.c
dm-log-userspace-transfer.c dm log userspace: fix memory leak in dm_ulog_tfr_init failure path 2014-10-05 20:03:38 -04:00
dm-log-userspace-transfer.h
dm-log.c
dm-mpath.c dm mpath: stop queueing IO when no valid paths exist 2014-10-05 20:03:35 -04:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid1.c
dm-raid.c dm raid: fix inaccessible superblocks causing oops in configure_discard_support 2014-10-29 14:53:27 -04:00
dm-region-hash.c
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c
dm-snap-transient.c
dm-snap.c sched: Remove proliferation of wait_on_bit() action functions 2014-07-16 15:10:39 +02:00
dm-stats.c
dm-stats.h
dm-stripe.c dm stripe: fix potential for leak in stripe_ctr error path 2014-10-10 22:05:18 -04:00
dm-switch.c dm switch: efficiently support repetitive patterns 2014-08-01 12:30:37 -04:00
dm-sysfs.c
dm-table.c dm: allow active and inactive tables to share dm_devs 2014-10-05 20:03:35 -04:00
dm-target.c
dm-thin-metadata.c dm thin: prefetch missing metadata pages 2014-11-10 15:25:27 -05:00
dm-thin-metadata.h dm thin: prefetch missing metadata pages 2014-11-10 15:25:27 -05:00
dm-thin.c dm thin: performance improvement to discard processing 2014-11-10 15:25:27 -05:00
dm-uevent.c
dm-uevent.h
dm-verity.c
dm-zero.c dm crypt, dm zero: update author name following legal name change 2014-07-10 16:44:14 -04:00
dm.c dm: improve documentation and code clarity in dm_merge_bvec 2014-11-10 15:25:27 -05:00
dm.h dm: allow active and inactive tables to share dm_devs 2014-10-05 20:03:35 -04:00
faulty.c
Kconfig
linear.c
linear.h
Makefile
md.c md: don't allow bitmap file to be added to raid0/linear. 2014-08-08 15:43:20 +10:00
md.h
multipath.c
multipath.h
raid0.c md/raid0: check for bitmap compatability when changing raid levels. 2014-08-08 15:33:17 +10:00
raid0.h
raid1.c md/raid1,raid10: always abort recover on write error. 2014-07-31 10:16:52 +10:00
raid1.h
raid5.c md/raid6: avoid data corruption during recovery of double-degraded RAID6 2014-08-18 14:49:46 +10:00
raid5.h raid5: add an option to avoid copy data from bio to stripe cache 2014-05-29 16:59:47 +10:00
raid10.c md/raid10: always initialise ->state on newly allocated r10_bio 2014-08-19 17:20:27 +10:00
raid10.h