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authorJoe Thornber <ejt@redhat.com>2016-12-15 04:57:31 -0500
committerMike Snitzer <snitzer@redhat.com>2017-03-07 13:28:31 -0500
commitb29d4986d0da1a27cd35917cdb433672f5c95d7f (patch)
treea5d94b86cf1eb759bfef5761015135d747e80561 /drivers/md/Makefile
parent742c8fdc31e820503f9267070311d894978d1349 (diff)
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dm cache: significant rework to leverage dm-bio-prison-v2
The cache policy interfaces have been updated to work well with the new bio-prison v2 interface's ability to queue work immediately (promotion, demotion, etc) -- overriding benefit being reduced latency on processing IO through the cache. Previously such work would be left for the DM cache core to queue on various lists and then process in batches later -- this caused a serious delay in latency for IO driven by the cache. The background tracker code was factored out so that all cache policies can make use of it. Also, the "cleaner" policy has been removed and is now a variant of the smq policy that simply disallows migrations. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/Makefile')
-rw-r--r--drivers/md/Makefile5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index d378b1db7852..2801b2fb452d 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -13,9 +13,9 @@ dm-log-userspace-y \
+= dm-log-userspace-base.o dm-log-userspace-transfer.o
dm-bio-prison-y += dm-bio-prison-v1.o dm-bio-prison-v2.o
dm-thin-pool-y += dm-thin.o dm-thin-metadata.o
-dm-cache-y += dm-cache-target.o dm-cache-metadata.o dm-cache-policy.o
+dm-cache-y += dm-cache-target.o dm-cache-metadata.o dm-cache-policy.o \
+ dm-cache-background-tracker.o
dm-cache-smq-y += dm-cache-policy-smq.o
-dm-cache-cleaner-y += dm-cache-policy-cleaner.o
dm-era-y += dm-era-target.o
dm-verity-y += dm-verity-target.o
md-mod-y += md.o bitmap.o
@@ -57,7 +57,6 @@ obj-$(CONFIG_DM_THIN_PROVISIONING) += dm-thin-pool.o
obj-$(CONFIG_DM_VERITY) += dm-verity.o
obj-$(CONFIG_DM_CACHE) += dm-cache.o
obj-$(CONFIG_DM_CACHE_SMQ) += dm-cache-smq.o
-obj-$(CONFIG_DM_CACHE_CLEANER) += dm-cache-cleaner.o
obj-$(CONFIG_DM_ERA) += dm-era.o
obj-$(CONFIG_DM_LOG_WRITES) += dm-log-writes.o