Commits
Ming Lei committed 60f2df8a29d
blk-mq: bitmap tag: remove barrier in bt_clear_tag() The barrier isn't necessary because both atomic_dec_and_test() and wake_up() implicate one barrier. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>