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| author |   Joe Thornber <ejt@redhat.com> | 2017-03-31 10:46:54 -0400 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@redhat.com> | 2017-03-31 11:41:05 -0400 |
| commit | cc7e394024770d4bfd8463fab1a9e2e262a7d7c1 (patch) | |
| tree | 2b2f2007229a2ec5bb26cb4edd0dd81216f43959 /drivers/md/dm-cache-policy-smq.c | |
| parent | dm cache: set/clear the cache core's dirty_bitset when loading mappings (diff) | |
| download | linux-dev-cc7e394024770d4bfd8463fab1a9e2e262a7d7c1.tar.xz linux-dev-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.c | 2 |
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); |