quoted

@@ -2346,8 +2345,11 @@ static void blk_mq_clear_rq_mapping(struct blk_mq_tag_set *set,
  void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
  		     unsigned int hctx_idx)
  {
+	struct blk_mq_tags *drv_tags;
  	struct page *page;
  
+		drv_tags = set->tags[hctx_idx];

Hi Ming,

Indent.

That's intentional, as we have from later patch:

void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags 
*tags, unsigned int hctx_idx)
{
	struct blk_mq_tags *drv_tags;
	struct page *page;

+	if (blk_mq_is_sbitmap_shared(set->flags))
+		drv_tags = set->shared_sbitmap_tags;
+	else
		drv_tags = set->tags[hctx_idx];

	...

	blk_mq_clear_rq_mapping(drv_tags, tags);

}

And it's just nice to not re-indent later.

quoted

+
  	if (tags->static_rqs && set->ops->exit_request) {
  		int i;
  

@@ -2361,7 +2363,7 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
  		}
  	}
  
-	blk_mq_clear_rq_mapping(set, tags, hctx_idx);
+	blk_mq_clear_rq_mapping(drv_tags, tags);

Maybe you can pass set->tags[hctx_idx] directly since there is only one
reference on it.

Again, intentional for similar reason, as above.

Thanks,
John