at_head, sreq, 0);
at_head, sreq);
int scsi_insert_special_req(struct scsi_request *sreq, int at_head){	/*	 * Because users of this function are apt to reuse requests with no	 * modification, we have to sanitise the request flags here	 */	sreq->sr_request->flags &= ~REQ_DONTPREP;	blk_insert_request(sreq->sr_device->request_queue, sreq->sr_request,		       	   at_head, sreq, 0);	return 0;}