[PATCH V2 10/13] block: add helper of disk_release_queue for release queue data for disk

[Christoph Hellwig]

On Tue, Jan 25, 2022 at 07:27:37AM +0800, Ming Lei wrote:
> > Please explain what "queue data for disk" is, and why this helper is
> 
> Here it means elevator, blk-cgroup and rq qos, all actually serve FS
> IOs, maybe it should be changed to FS IOs.
> 
> > useful.  Right now it seems to just move a few things around without a
> > rationale or explanation of why it is safe.
> 
> This patch just moves two function calls into the helper, and there
> doesn't have functional change, so no need rationale and explanation.

Yes, it it does.  If you move calls into a "helper" that has a single
caller and a weird name it better have a good explanation, because the
move does not look useful at all.