summaryrefslogtreecommitdiffstats
path: root/drivers/md/dm-cache-policy-smq.c
diff options
context:
space:
mode:
authorJoe Thornber <ejt@redhat.com>2017-03-31 10:46:54 -0400
committerMike Snitzer <snitzer@redhat.com>2017-03-31 11:41:05 -0400
commitcc7e394024770d4bfd8463fab1a9e2e262a7d7c1 (patch)
tree2b2f2007229a2ec5bb26cb4edd0dd81216f43959 /drivers/md/dm-cache-policy-smq.c
parent449b668ce0b9069fcaafa6344c7f10fa2ba9632e (diff)
downloadlinux-stable-cc7e394024770d4bfd8463fab1a9e2e262a7d7c1.tar.gz
linux-stable-cc7e394024770d4bfd8463fab1a9e2e262a7d7c1.tar.bz2
linux-stable-cc7e394024770d4bfd8463fab1a9e2e262a7d7c1.zip
dm cache policy smq: make the cleaner policy write-back more aggressively
By ignoring the sentinels the cleaner policy is able to write-back dirty cache data much faster. There is no reason to respect the sentinels, which denote that a block was changed recently, when using the cleaner policy given that the cleaner is tasked with writing back all dirty data. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-cache-policy-smq.c')
-rw-r--r--drivers/md/dm-cache-policy-smq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c
index 74436dc2122f..e0c40aec5e96 100644
--- a/drivers/md/dm-cache-policy-smq.c
+++ b/drivers/md/dm-cache-policy-smq.c
@@ -1166,7 +1166,7 @@ static void queue_writeback(struct smq_policy *mq)
struct policy_work work;
struct entry *e;
- e = q_peek(&mq->dirty, mq->dirty.nr_levels, false);
+ e = q_peek(&mq->dirty, mq->dirty.nr_levels, !mq->migrations_allowed);
if (e) {
mark_pending(mq, e);
q_del(&mq->dirty, e);