Re: [PATCH RESEND 5/5] block: Remove __blk_mq_sched_bio_merge() helper

On Mon, Aug 17, 2020 at 08:14:08PM +0800, Baolin Wang wrote:

On Mon, Aug 17, 2020 at 08:32:41AM +0200, Christoph Hellwig wrote:

quoted

On Mon, Aug 17, 2020 at 12:09:19PM +0800, Baolin Wang wrote:

quoted

The blk_mq_sched_bio_merge() just wrap the __blk_mq_sched_bio_merge(), and
no other places will use __blk_mq_sched_bio_merge(). Thus we can combine
these 2 similar functions into one function.

I think the idea was to avoid the function call for the nomerges fast
path.  Not sure if that is really worth it.

Um, no places will use __blk_mq_sched_bio_merge(), not sure if it is a
good choice we still keep an unused and similar function?

Well, blk_mq_sched_bio_merge calls __blk_mq_sched_bio_merge, after
performing two fast path checks.