From 131cd131a9ff63d4b84f3fe15073a2984ac30066 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 1 May 2014 16:14:24 -0400 Subject: 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 Acked-by: Joe Thornber Cc: stable@vger.kernel.org # 3.13+ --- drivers/md/dm-cache-target.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 1bf4a71919ec..9380be7b1895 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)) -- cgit v1.2.3