Joe Thornber 651f5fa2a3 dm cache: defer whole cells ...

Currently individual bios are deferred to the worker thread if they
cannot be processed immediately (eg, a block is in the process of
being moved to the fast device).

This patch passes whole cells across to the worker.  This saves
reaquiring the cell, and also collects bios destined for the same block
together, which allows them to be mapped with a single look up to the
policy.  This reduces the overhead of using dm-cache.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2015-05-29 14:19:06 -04:00

..

bcache

block: remove management of bi_remaining when restoring original bi_end_io

2015-05-22 08:58:55 -06:00

persistent-data

dm thin metadata: remove in-core 'read_only' flag

2015-05-29 14:18:59 -04:00

bitmap.c

md/bitmap: remove rcu annotation from pointer arithmetic.

2015-05-21 09:14:41 +10:00

bitmap.h

md-cluster: re-add capabilities

2015-04-22 07:59:39 +10:00

dm-bio-prison.c

dm bio prison: add dm_cell_promote_or_release()

2015-05-29 14:19:06 -04:00

dm-bio-prison.h

dm bio prison: add dm_cell_promote_or_release()

2015-05-29 14:19:06 -04:00

dm-bio-record.h

dm: Refactor for new bio cloning/splitting

2013-11-23 22:33:55 -08:00

dm-bufio.c

dm bufio: fix time comparison to use time_after_eq()

2015-02-09 13:06:48 -05:00

dm-bufio.h

dm snapshot: use dm-bufio prefetch

2014-01-14 23:23:03 -05:00

dm-builtin.c

dm sysfs: fix a module unload race

2014-01-14 23:23:04 -05:00

dm-cache-block-types.h

dm cache: revert "remove remainder of distinct discard block size"

2014-11-10 15:25:30 -05:00

dm-cache-metadata.c

dm cache: fix missing ERR_PTR returns and handling

2015-01-28 09:59:20 -05:00

dm-cache-metadata.h

dm cache: revert "remove remainder of distinct discard block size"

2014-11-10 15:25:30 -05:00

dm-cache-policy-cleaner.c

dm cache: pass a new 'critical' flag to the policies when requesting writeback work

2015-05-29 14:19:04 -04:00

dm-cache-policy-internal.h

dm cache: pull out some bitset utility functions for reuse

2015-05-29 14:19:05 -04:00

dm-cache-policy-mq.c

dm cache: pass a new 'critical' flag to the policies when requesting writeback work

2015-05-29 14:19:04 -04:00

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: pass a new 'critical' flag to the policies when requesting writeback work

2015-05-29 14:19:04 -04:00

dm-cache-target.c

dm cache: defer whole cells

2015-05-29 14:19:06 -04:00

dm-crypt.c

dm crypt: add comments to better describe crypto processing logic

2015-05-29 14:19:02 -04:00

dm-delay.c

dm delay: use msecs_to_jiffies for time conversion

2015-04-15 12:10:21 -04:00

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: replace simple_strtoul

2012-07-27 15:07:59 +01:00

dm-exception-store.h

…

dm-flakey.c

block: Abstract out bvec iterator

2013-11-23 22:33:47 -08:00

dm-io.c

dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME

2015-02-27 14:53:32 -05:00

dm-ioctl.c

dm: only initialize the request_queue once

2015-04-30 10:25:21 -04:00

dm-kcopyd.c

dm: stop using WQ_NON_REENTRANT

2013-08-23 09:02:13 -04:00

dm-linear.c

block: Abstract out bvec iterator

2013-11-23 22:33:47 -08:00

dm-log-userspace-base.c

dm log userspace base: fix compile warning

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

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

dm log writes: use ULL suffix for 64-bit constants

2015-05-29 14:19:01 -04:00

dm-log.c

dm: use memweight()

2012-07-30 17:25:16 -07:00

dm-mpath.c

dm mpath: fix leak of dm_mpath_io structure in blk-mq .queue_rq error path

2015-05-27 17:37:22 -04:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

…

dm-queue-length.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-raid1.c

dm raid1: keep issuing IO after leg failure

2015-05-29 14:19:02 -04:00

dm-raid.c

dm raid: add support for the MD RAID0 personality

2015-05-29 14:19:00 -04:00

dm-region-hash.c

block: Abstract out bvec iterator

2013-11-23 22:33:47 -08:00

dm-round-robin.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-service-time.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-snap-persistent.c

dm snapshot: remove unnecessary NULL checks before vfree() calls

2015-02-09 13:06:49 -05:00

dm-snap-transient.c

…

dm-snap.c

block: remove management of bi_remaining when restoring original bi_end_io

2015-05-22 08:58:55 -06:00

dm-stats.c

- Significant DM thin-provisioning performance improvements to meet

2014-12-08 21:10:03 -08:00

dm-stats.h

dm: add statistics support

2013-09-05 20:46:06 -04:00

dm-stripe.c

dm stripe: drop useless exit point from dm_stripe_init()

2015-05-29 14:19:01 -04:00

dm-switch.c

dm switch: efficiently support repetitive patterns

2014-08-01 12:30:37 -04:00

dm-sysfs.c

dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr

2015-04-15 12:10:17 -04:00

dm-table.c

dm: do not allocate any mempools for blk-mq request-based DM

2015-05-29 14:18:57 -04:00

dm-target.c

dm: allocate requests in target when stacking on blk-mq devices

2015-02-09 13:06:47 -05:00

dm-thin-metadata.c

dm thin metadata: remove in-core 'read_only' flag

2015-05-29 14:18:59 -04:00

dm-thin-metadata.h

dm thin metadata: remove unused dm_pool_get_data_block_size()

2015-02-09 13:06:49 -05:00

dm-thin.c

dm thin: cleanup schedule_zero() to read more logically

2015-05-29 14:18:58 -04:00

dm-uevent.c

…

dm-uevent.h

…

dm-verity.c

block: remove management of bi_remaining when restoring original bi_end_io

2015-05-22 08:58:55 -06:00

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: factor out a common cleanup_mapped_device()

2015-05-29 14:18:58 -04:00

dm.h

block, dm: don't copy bios for request clones

2015-05-22 08:58:57 -06:00

faulty.c

md: rename ->stop to ->free

2015-02-04 08:35:52 +11:00

Kconfig

md updates for 4.1

2015-04-24 09:28:01 -07:00

linear.c

md: rename ->stop to ->free

2015-02-04 08:35:52 +11:00

linear.h

…

Makefile

md updates for 4.1

2015-04-24 09:28:01 -07:00

md-cluster.c

md-cluster: re-add capabilities

2015-04-22 07:59:39 +10:00

md-cluster.h

md-cluster: re-add capabilities

2015-04-22 07:59:39 +10:00

md.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2015-05-08 19:49:35 -07:00

md.h

md: remove 'go_faster' option from ->sync_request()

2015-04-22 08:00:40 +10:00

multipath.c

md: rename ->stop to ->free

2015-02-04 08:35:52 +11:00

multipath.h

…

raid0.c

md/raid0: fix restore to sector variable in raid0_make_request

2015-05-21 09:14:25 +10:00

raid0.h

…

raid1.c

md: remove 'go_faster' option from ->sync_request()

2015-04-22 08:00:40 +10:00

raid1.h

md: make ->congested robust against personality changes.

2015-02-04 08:35:52 +11:00

raid5.c

raid5: fix broken async operation chain

2015-05-21 09:14:20 +10:00

raid5.h

md/raid5: allow the stripe_cache to grow and shrink.

2015-04-22 08:00:43 +10:00

raid10.c

md: remove 'go_faster' option from ->sync_request()

2015-04-22 08:00:40 +10:00

raid10.h

md: make ->congested robust against personality changes.

2015-02-04 08:35:52 +11:00