blk-mq-sched: Rename blk_mq_sched_alloc_{tags -> map_and_rqs}()

Function blk_mq_sched_alloc_tags() does same as
__blk_mq_alloc_map_and_request(), so give a similar name to be consistent.

Similarly rename label err_free_tags -> err_free_map_and_rqs.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/1633429419-228500-6-git-send-email-john.garry@huawei.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-mq-sched.c

@@ -515,9 +515,9 @@ void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
 	percpu_ref_put(&q->q_usage_counter);
 }
 
-static int blk_mq_sched_alloc_tags(struct request_queue *q,
-				   struct blk_mq_hw_ctx *hctx,
-				   unsigned int hctx_idx)
+static int blk_mq_sched_alloc_map_and_rqs(struct request_queue *q,
+					  struct blk_mq_hw_ctx *hctx,
+					  unsigned int hctx_idx)
 {
 	struct blk_mq_tag_set *set = q->tag_set;
 	int ret;
@@ -609,15 +609,15 @@ int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e)
 				   BLKDEV_DEFAULT_RQ);
 
 	queue_for_each_hw_ctx(q, hctx, i) {
-		ret = blk_mq_sched_alloc_tags(q, hctx, i);
+		ret = blk_mq_sched_alloc_map_and_rqs(q, hctx, i);
 		if (ret)
-			goto err_free_tags;
+			goto err_free_map_and_rqs;
 	}
 
 	if (blk_mq_is_sbitmap_shared(q->tag_set->flags)) {
 		ret = blk_mq_init_sched_shared_sbitmap(q);
 		if (ret)
-			goto err_free_tags;
+			goto err_free_map_and_rqs;
 	}
 
 	ret = e->ops.init_sched(q, e);
@@ -645,7 +645,7 @@ int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e)
 err_free_sbitmap:
 	if (blk_mq_is_sbitmap_shared(q->tag_set->flags))
 		blk_mq_exit_sched_shared_sbitmap(q);
-err_free_tags:
+err_free_map_and_rqs:
 	blk_mq_sched_free_requests(q);
 	blk_mq_sched_tags_teardown(q);
 	q->elevator = NULL;