3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mike Snitzer <snit...@redhat.com>
commit 131cd131a9ff63d4b84f3fe15073a2984ac30066 upstream.
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 <snit...@redhat.com>
Acked-by: Joe Thornber <e...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/md/dm-cache-target.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -2506,6 +2506,7 @@ static int cache_map(struct dm_target *t
} 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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