Joe Thornber fba10109a4 dm cache: age and write back cache entries even without active IO ... The policy tick() method is normally called from interrupt context. Both the mq and smq policies do some bottom half work for the tick method in their map functions. However if no IO is going through the cache, then that bottom half work doesn't occur. With these policies this means recently hit entries do not age and do not get written back as early as we'd like. Fix this by introducing a new 'can_block' parameter to the tick() method. When this is set the bottom half work occurs immediately. 'can_block' is set when the tick method is called every second by the core target (not in interrupt context). Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>		2015-06-11 17:13:01 -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: add fail io mode and needs_check flag	2015-06-11 17:13:00 -04:00
dm-cache-metadata.h	dm cache: add fail io mode and needs_check flag	2015-06-11 17:13:00 -04:00
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: age and write back cache entries even without active IO	2015-06-11 17:13:01 -04:00
dm-cache-policy-mq.c	dm cache: age and write back cache entries even without active IO	2015-06-11 17:13:01 -04:00
dm-cache-policy-smq.c	dm cache: age and write back cache entries even without active IO	2015-06-11 17:13:01 -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: age and write back cache entries even without active IO	2015-06-11 17:13:01 -04:00
dm-cache-target.c	dm cache: age and write back cache entries even without active IO	2015-06-11 17:13:01 -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	dm cache: add stochastic-multi-queue (smq) policy	2015-06-11 17:12:59 -04:00
linear.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
linear.h
Makefile	dm cache: add stochastic-multi-queue (smq) policy	2015-06-11 17:12:59 -04:00
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	md: add proper merge_bvec handling to RAID0 and Linear.	2012-03-19 12:46:39 +11:00
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