suse man page for blk_requeue_request

BLK_REQUEUE_REQUEST(9)						   Block Devices					    BLK_REQUEUE_REQUEST(9)

NAME
       blk_requeue_request - put a request back on queue

SYNOPSIS
       void blk_requeue_request(struct request_queue * q, struct request * rq);

ARGUMENTS
       q
	   request queue where request should be inserted

       rq
	   request to be inserted

DESCRIPTION
       Drivers often keep queueing requests until the hardware cannot accept more, when that condition happens we need to put the request back on
       the queue. Must be called with queue lock held.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						    BLK_REQUEUE_REQUEST(9)