23 struct request *blk_queue_find_tag(struct request_queue *q, int tag)  in blk_queue_find_tag()  argument
25 	return blk_map_queue_find_tag(q->queue_tags, tag);  in blk_queue_find_tag()
268 	unsigned tag = rq->tag; /* negative tags invalid */  in blk_queue_end_tag()  local
270 	BUG_ON(tag >= bqt->real_max_depth);  in blk_queue_end_tag()
274 	rq->tag = -1;  in blk_queue_end_tag()
276 	if (unlikely(bqt->tag_index[tag] == NULL))  in blk_queue_end_tag()
278 		       __func__, tag);  in blk_queue_end_tag()
280 	bqt->tag_index[tag] = NULL;  in blk_queue_end_tag()
282 	if (unlikely(!test_bit(tag, bqt->tag_map))) {  in blk_queue_end_tag()
284 		       __func__, tag);  in blk_queue_end_tag()
291 	clear_bit_unlock(tag, bqt->tag_map);  in blk_queue_end_tag()
317 	int tag;  in blk_queue_start_tag()  local
323 		       rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->tag);  in blk_queue_start_tag()
352 			tag = find_first_zero_bit(bqt->tag_map, max_depth);  in blk_queue_start_tag()
353 			if (tag >= max_depth)  in blk_queue_start_tag()
358 			tag = find_next_zero_bit(bqt->tag_map, size, start);  in blk_queue_start_tag()
359 			if (tag >= size && start + size > bqt->max_depth) {  in blk_queue_start_tag()
361 				tag = find_first_zero_bit(bqt->tag_map, size);  in blk_queue_start_tag()
363 			if (tag >= size)  in blk_queue_start_tag()
367 	} while (test_and_set_bit_lock(tag, bqt->tag_map));  in blk_queue_start_tag()
373 	bqt->next_tag = (tag + 1) % bqt->max_depth;  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()