Man page 9 : __blk_run_queue_uncond

__blk_run_queue_uncond - run a queue whether or not it has been stopped

void __blk_run_queue_uncond(struct request_queue *  q );

q
    The queue to run

Invoke request handling on a queue if there are any pending requests. May be used to restart request handling after a request has completed. This variant runs the queue whether or not the queue has been stopped. Must be called with the queue lock held and interrupts disabled. See also blk_run_queue.