Unlike blk_mq_stop_hw_queues, blk_mq_quiesce_queue respects the
submission path rcu grace. quiesce the queue before iterating
on live tags.
Reviewed-by: NMing Lei <ming.lei@redhat.com>
Acked-by: NJosef Bacik <jbacik@fb.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>