265 void blk_queue_end_tag(struct request_queue *q, struct request *rq)  in blk_queue_end_tag()  argument
268 	unsigned tag = rq->tag; /* negative tags invalid */  in blk_queue_end_tag()
272 	list_del_init(&rq->queuelist);  in blk_queue_end_tag()
273 	rq->cmd_flags &= ~REQ_QUEUED;  in blk_queue_end_tag()
274 	rq->tag = -1;  in blk_queue_end_tag()
313 int blk_queue_start_tag(struct request_queue *q, struct request *rq)  in blk_queue_start_tag()  argument
319 	if (unlikely((rq->cmd_flags & REQ_QUEUED))) {  in blk_queue_start_tag()
322 		       __func__, rq,  in blk_queue_start_tag()
323 		       rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->tag);  in blk_queue_start_tag()
335 	if (!rq_is_sync(rq) && max_depth > 1) {  in blk_queue_start_tag()
374 	rq->cmd_flags |= REQ_QUEUED;  in blk_queue_start_tag()
375 	rq->tag = tag;  in blk_queue_start_tag()
376 	bqt->tag_index[tag] = rq;  in blk_queue_start_tag()
377 	blk_start_request(rq);  in blk_queue_start_tag()
378 	list_add(&rq->queuelist, &q->tag_busy_list);  in blk_queue_start_tag()