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| author | Mike Snitzer <snitzer@redhat.com> | 2014-05-01 16:14:24 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:12 -0700 |
| commit | f9556c35b5b7ce5b50a0490c2b93c88af92df648 (patch) | |
| tree | 13acf5d2b94b7c3e944b025d165c06893341017e /drivers | |
| parent | c80498a9f6b91d35bc6b6dfd185886d8d4346d43 (diff) | |
| download | lwn-f9556c35b5b7ce5b50a0490c2b93c88af92df648.tar.gz lwn-f9556c35b5b7ce5b50a0490c2b93c88af92df648.zip | |
dm cache: fix writethrough mode quiescing in cache_map
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 <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 b82b58f0bb85..9306e0bcb564 100644 --- 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 *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)) |