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| author | Mike Snitzer <snitzer@redhat.com> | 2014-05-01 16:14:24 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2014-05-01 16:14:24 -0400 |
| commit | 131cd131a9ff63d4b84f3fe15073a2984ac30066 (patch) | |
| tree | da582a415cb1e354df407ba2d8b69ebb75b265d9 | |
| parent | fbcde3d8b9c2d97704b8ca299e5266147b24c8ee (diff) | |
| download | linux-131cd131a9ff63d4b84f3fe15073a2984ac30066.tar.bz2 | |
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+
| -rw-r--r-- | drivers/md/dm-cache-target.c | 1 |
1 files changed, 1 insertions, 0 deletions
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)) |