Commits
Shaohua Li committed 30d7b9448f0
block cfq: don't use atomic_t for cfq_queue cfq_queue->ref is used with queue_lock hold, so ref doesn't need to be an atomic and atomic operation is slower. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>