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(parent: 072792d) | patch
dm cache policy smq: only demote entries in bottom half of the clean multiqueue
authorJoe Thornber <ejt@redhat.com>
Thu, 11 May 2017 09:07:34 +0000 (05:07 -0400)
committerMike Snitzer <snitzer@redhat.com>
Mon, 15 May 2017 01:54:32 +0000 (21:54 -0400)
commita8cd1eba6135e086109e2b94bf96deb17456ede8
tree4c77d6484c743c7cbd8b0138e336cb229b7194bftree
parent072792dcdfc8d5f91a26050e5665285f50afebf5commit | diff
dm cache policy smq: only demote entries in bottom half of the clean multiqueue

Heavy IO load may mean there are very few clean blocks in the cache, and
we risk demoting entries that get hit a lot.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-cache-policy-smq.c diff | blob | history
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