Re: [PATCH v2 06/11] blk-mq: Pass driver tags to blk_mq_clear_rq_mapping()

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On 19/08/2021 01:39, Ming Lei wrote:
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.
But this way is weird, and I don't think checkpatch.pl is happy with
it.

There is the idea to try to not remove/change code earlier in a series - I am taking it to an extreme! I can stop.

On another related topic, how about this change also:

---8<---
void blk_mq_clear_rq_mapping(struct blk_mq_tags *drv_tags,
			     struct blk_mq_tags *tags)
 {

+	/* There is no need to clear a driver tags own mapping */
+	if (drv_tags == tags)
+		return;
--->8---

Thanks,
John



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