Mikulas Patocka 724376a04d dm integrity: implement fair range locks ...

dm-integrity locks a range of sectors to prevent concurrent I/O or journal
writeback.  These locks were not fair - so that many small overlapping I/Os
could starve a large I/O indefinitely.

Fix this by making the range locks fair.  The ranges that are waiting are
added to the list "wait_list".  If a new I/O overlaps some of the waiting
I/Os, it is not dispatched, but it is also added to that wait list.
Entries on the wait list are processed in first-in-first-out order, so
that an I/O can't starve indefinitely.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2018-07-27 15:24:22 -04:00

..

bcache

docs: Fix some broken references

2018-06-15 18:10:01 -03:00

persistent-data

dm bufio: move dm-bufio.h to include/linux/

2018-04-03 15:04:23 -04:00

dm-bio-prison-v1.c

dm: adjust structure members to improve alignment

2018-06-08 11:53:14 -04:00

dm-bio-prison-v1.h

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

dm-bio-prison-v2.c

dm: adjust structure members to improve alignment

2018-06-08 11:53:14 -04:00

dm-bio-prison-v2.h

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-record.h

block: replace bi_bdev with a gendisk pointer and partitions index

2017-08-23 12:49:55 -06:00

dm-bufio.c

dm bufio: fix buffer alignment

2018-04-30 11:51:39 -04:00

dm-builtin.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dm-cache-background-tracker.c

dm cache background tracker: fix sparse warning

2018-04-30 15:40:40 -04:00

dm-cache-background-tracker.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-block-types.h

linux: drop __bitwise__ everywhere

2016-12-16 00:13:41 +02:00

dm-cache-metadata.c

dm cache: convert dm_cache_metadata.ref_count from atomic_t to refcount_t

2017-10-24 15:09:51 -04:00

dm-cache-metadata.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-internal.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-smq.c

treewide: Use array_size() in vzalloc()

2018-06-12 16:19:22 -07:00

dm-cache-policy.c

dm cache: add policy name to status output

2014-01-16 13:44:11 -05:00

dm-cache-policy.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-target.c

dm cache: only allow a single io_mode cache feature to be requested

2018-07-27 15:24:18 -04:00

dm-core.h

dm: adjust structure members to improve alignment

2018-06-08 11:53:14 -04:00

dm-crypt.c

Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2018-06-12 18:28:00 -07:00

dm-delay.c

dm delay: add flush as a third class of IO

2018-07-27 15:24:19 -04:00

dm-era-target.c

dm: allow targets to return output from messages they are sent

2018-04-03 15:04:10 -04:00

dm-exception-store.c

Merge tag 'dm-4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

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: remove fmode_t argument from .prepare_ioctl hook

2018-04-04 12:12:39 -04:00

dm-integrity.c

dm integrity: implement fair range locks

2018-07-27 15:24:22 -04:00

dm-io.c

dm: Use kzalloc for all structs with embedded biosets/mempools

2018-06-05 08:47:43 -06:00

dm-ioctl.c

dm: report which conflicting type caused error during table_load()

2018-06-08 09:50:15 -04:00

dm-kcopyd.c

dm: adjust structure members to improve alignment

2018-06-08 11:53:14 -04:00

dm-linear.c

dax: Introduce a ->copy_to_iter dax operation

2018-05-22 23:18:31 -07:00

dm-log-userspace-base.c

dm: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

dm-log-userspace-transfer.c

dm log userspace transfer: match wait_for_completion_timeout return type

2015-04-15 12:10:20 -04:00

dm-log-userspace-transfer.h

…

dm-log-writes.c

dax: Introduce a ->copy_to_iter dax operation

2018-05-22 23:18:31 -07:00

dm-log.c

block,fs: use REQ_* flags directly

2016-11-01 09:43:26 -06:00

dm-mpath.c

block: sanitize blk_get_request calling conventions

2018-05-14 08:55:12 -06:00

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 mpath selector: more evenly distribute ties

2018-01-29 13:44:58 -05:00

dm-raid1.c

dm mirror: remove VLA usage

2018-05-04 10:35:20 -04:00

dm-raid.c

dm raid: don't use 'const' in function return

2018-06-22 14:51:12 -04:00

dm-region-hash.c

Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2018-06-12 18:28:00 -07:00

dm-round-robin.c

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

2017-02-17 00:54:09 -05:00

dm-rq.c

dm: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

dm-rq.h

dm rq: do not update rq partially in each ending bio

2017-08-28 10:23:28 -04:00

dm-service-time.c

dm mpath selector: more evenly distribute ties

2018-01-29 13:44:58 -05:00

dm-snap-persistent.c

dm bufio: move dm-bufio.h to include/linux/

2018-04-03 15:04:23 -04:00

dm-snap-transient.c

dm snapshot: fix hung bios when copy error occurs

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

dm-snap.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

dm-stats.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

dm-stats.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dm-stripe.c

dax: Introduce a ->copy_to_iter dax operation

2018-05-22 23:18:31 -07:00

dm-switch.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

dm-sysfs.c

dm: move request-based code out to dm-rq.[hc]

2016-06-10 15:15:44 -04:00

dm-table.c

dm: prevent DAX mounts if not supported

2018-06-28 16:06:14 -04:00

dm-target.c

dm: remove unused macro DM_MOD_NAME_SIZE

2018-04-03 15:04:15 -04:00

dm-thin-metadata.c

dm thin metadata: remove needless work from __commit_transaction

2018-06-22 14:51:11 -04:00

dm-thin-metadata.h

dm thin: fix a race condition between discarding and provisioning a block

2016-07-20 12:43:35 -04:00

dm-thin.c

dm thin: handle running out of data space vs concurrent discard

2018-06-27 08:49:46 -04:00

dm-uevent.c

…

dm-uevent.h

…

dm-unstripe.c

dm unstripe: remove unnecessary header includes

2018-04-03 15:04:15 -04:00

dm-verity-fec.c

Merge tag 'rslib-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2018-06-05 10:48:05 -07:00

dm-verity-fec.h

dm: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

dm-verity-target.c

treewide: kvzalloc() -> kvcalloc()

2018-06-12 16:19:22 -07:00

dm-verity.h

dm verity: add 'check_at_most_once' option to only validate hashes once

2018-04-03 15:04:29 -04:00

dm-writecache.c

dm writecache: support optional offset for start of device

2018-07-02 16:14:02 -04:00

dm-zero.c

dm: don't return errnos from ->map

2017-06-09 09:27:32 -06:00

dm-zoned-metadata.c

dm: backfill missing calls to mutex_destroy()

2018-01-17 09:16:15 -05:00

dm-zoned-reclaim.c

dm zoned: use GFP_NOIO in I/O path

2017-07-26 15:55:43 -04:00

dm-zoned-target.c

dm zoned: avoid triggering reclaim from inside dmz_map()

2018-06-22 14:51:12 -04:00

dm-zoned.h

dm zoned: drive-managed zoned block device target

2017-06-19 11:05:20 -04:00

dm.c

dm: prevent DAX mounts if not supported

2018-06-28 16:06:14 -04:00

dm.h

dm: move dm_table_destroy() to same header as dm_table_create()

2018-01-17 09:16:06 -05:00

Kconfig

dm: add writecache target

2018-06-08 11:59:51 -04:00

Makefile

dm: add writecache target

2018-06-08 11:59:51 -04:00

md-bitmap.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

md-bitmap.h

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2017-11-14 16:07:26 -08:00

md-cluster.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

md-cluster.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

md-faulty.c

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

md-linear.c

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

md-linear.h

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2017-11-14 16:07:26 -08:00

md-multipath.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

md-multipath.h

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

md.c

MD: cleanup resources in failure

2018-06-18 09:46:13 -07:00

md.h

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2018-06-09 12:01:36 -07:00

raid0.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

raid0.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

raid1-10.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

raid1.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

raid1.h

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

raid5-cache.c

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

raid5-log.h

raid5-ppl: fix handling flush requests

2018-02-21 09:40:40 -08:00

raid5-ppl.c

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00

raid5.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

raid5.h

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2018-06-09 12:01:36 -07:00

raid10.c

md/raid10: fix that replacement cannot complete recovery after reassemble

2018-06-28 13:04:49 -07:00

raid10.h

md: convert to bioset_init()/mempool_init()

2018-05-30 15:33:32 -06:00