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authorJoe Thornber <ejt@redhat.com>2015-05-15 15:20:09 +0100
committerMike Snitzer <snitzer@redhat.com>2015-05-29 14:19:04 -0400
commit20f6814b94fff4a98b123f1c2b691e936be27aaf (patch)
tree1845743b06f1a2e999a37c5ae98ba6649753a95a /drivers/md/dm-cache-policy-internal.h
parent066dbaa386c751164c39ab025e5e8803b4a4d691 (diff)
downloadlinux-20f6814b94fff4a98b123f1c2b691e936be27aaf.tar.bz2
dm cache: pass a new 'critical' flag to the policies when requesting writeback work
We only allow non critical writeback if the origin is idle. It is up to the policy to decide what writeback work is critical. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-cache-policy-internal.h')
-rw-r--r--drivers/md/dm-cache-policy-internal.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h
index c198e6defb9c..776c685167e6 100644
--- a/drivers/md/dm-cache-policy-internal.h
+++ b/drivers/md/dm-cache-policy-internal.h
@@ -55,9 +55,10 @@ static inline int policy_walk_mappings(struct dm_cache_policy *p,
static inline int policy_writeback_work(struct dm_cache_policy *p,
dm_oblock_t *oblock,
- dm_cblock_t *cblock)
+ dm_cblock_t *cblock,
+ bool critical_only)
{
- return p->writeback_work ? p->writeback_work(p, oblock, cblock) : -ENOENT;
+ return p->writeback_work ? p->writeback_work(p, oblock, cblock, critical_only) : -ENOENT;
}
static inline void policy_remove_mapping(struct dm_cache_policy *p, dm_oblock_t oblock)