Hi. On středa 11. srpna 2021 21:48:19 CEST Jens Axboe wrote: > On 8/11/21 11:41 AM, Tejun Heo wrote: > > From e150c6478e453fe27b5cf83ed5d03b7582b6d35e Mon Sep 17 00:00:00 2001 > > From: Tejun Heo <tj@xxxxxxxxxx> > > Date: Wed, 11 Aug 2021 07:29:20 -1000 > > > > This reverts commit 08a9ad8bf607 ("block/mq-deadline: Add cgroup support") > > and a follow-up commit c06bc5a3fb42 ("block/mq-deadline: Remove a > > WARN_ON_ONCE() call"). The added cgroup support has the following issues: > > > > * It breaks cgroup interface file format rule by adding custom elements to > > a> > > nested key-value file. > > > > * It registers mq-deadline as a cgroup-aware policy even though all it's > > > > doing is collecting per-cgroup stats. Even if we need these stats, this > > isn't the right way to add them. > > > > * It hasn't been reviewed from cgroup side. > > I missed that the cgroup side hadn't seen or signed off on this one. I > have applied this revert for 5.14. Should my commit [1] be reverted too? Thanks. [1] https://git.kernel.dk/cgit/linux-block/commit/?h=block-5.14&id=ec645dc96699ea6c37b6de86c84d7288ea9a4ddf -- Oleksandr Natalenko (post-factum)