bcache: Fix leak of bdev reference
authorJan Kara <jack@suse.cz>
Wed, 6 Sep 2017 06:25:51 +0000 (14:25 +0800)
committerJens Axboe <axboe@kernel.dk>
Wed, 6 Sep 2017 14:17:33 +0000 (08:17 -0600)
commit4b758df21ee7081ab41448d21d60367efaa625b3
tree7fe339d622132fd3d83689105f3d946dcfc77a50
parentbc75705d00637c5f7b0346bf63094a9899c3d516
bcache: Fix leak of bdev reference

If blkdev_get_by_path() in register_bcache() fails, we try to lookup the
block device using lookup_bdev() to detect which situation we are in to
properly report error. However we never drop the reference returned to
us from lookup_bdev(). Fix that.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/bcache/super.c