[PATCH 1/2] blk-mq: rename blk_mq_can_use_cached_rq

[Christoph Hellwig <hch@lst.de>]

blk_mq_can_use_cached_rq doesn't just check if we can use the request,
but also performs the work to actually use it.  Remove the _can in the
naming, and improve the comment describing the function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/blk-mq.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index aa9a05fdd02377..a6731cacd0132c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2884,8 +2884,11 @@ static struct request *blk_mq_get_new_requests(struct request_queue *q,
 	return NULL;
 }
 
-/* return true if this @rq can be used for @bio */
-static bool blk_mq_can_use_cached_rq(struct request *rq, struct blk_plug *plug,
+/*
+ * Check if we can use the passed on request for submitting the passed in bio,
+ * and remove it from the request list if it can be used.
+ */
+static bool blk_mq_use_cached_rq(struct request *rq, struct blk_plug *plug,
 		struct bio *bio)
 {
 	enum hctx_type type = blk_mq_get_hctx_type(bio->bi_opf);
@@ -2963,7 +2966,7 @@ void blk_mq_submit_bio(struct bio *bio)
 			return;
 		if (blk_mq_attempt_bio_merge(q, bio, nr_segs))
 			return;
-		if (blk_mq_can_use_cached_rq(rq, plug, bio))
+		if (blk_mq_use_cached_rq(rq, plug, bio))
 			goto done;
 		percpu_ref_get(&q->q_usage_counter);
 	} else {
-- 
2.39.2