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authorMike Snitzer <snitzer@redhat.com>2014-05-01 16:14:24 -0400
committerMike Snitzer <snitzer@redhat.com>2014-05-01 16:14:24 -0400
commit131cd131a9ff63d4b84f3fe15073a2984ac30066 (patch)
treeda582a415cb1e354df407ba2d8b69ebb75b265d9 /drivers/md/dm-cache-target.c
parentfbcde3d8b9c2d97704b8ca299e5266147b24c8ee (diff)
downloadop-kernel-dev-131cd131a9ff63d4b84f3fe15073a2984ac30066.zip
op-kernel-dev-131cd131a9ff63d4b84f3fe15073a2984ac30066.tar.gz
dm cache: fix writethrough mode quiescing in cache_map
Commit 2ee57d58735 ("dm cache: add passthrough mode") inadvertently removed the deferred set reference that was taken in cache_map()'s writethrough mode support. Restore taking this reference. This issue was found with code inspection. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Cc: stable@vger.kernel.org # 3.13+
Diffstat (limited to 'drivers/md/dm-cache-target.c')
-rw-r--r--drivers/md/dm-cache-target.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 1bf4a71..9380be7 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -2488,6 +2488,7 @@ static int cache_map(struct dm_target *ti, struct bio *bio)
} else {
inc_hit_counter(cache, bio);
+ pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds);
if (bio_data_dir(bio) == WRITE && writethrough_mode(&cache->features) &&
!is_dirty(cache, lookup_result.cblock))
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