From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
Subject: Re: [PATCH -next v3 0/3] blk-cgroup: make sure pd_free_fn() is called
 in order
Date: Thu, 19 Jan 2023 11:54:00 -0700
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To: Yu Kuai <yukuai1-XF6JlduFytWkHkcT6e4Xnw@public.gmane.org>, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, hch-jcswGhMUV9g@public.gmane.org, josef-DigfWCa+lFGyeJad7bwFQA@public.gmane.org
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, yukuai3-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, yi.zhang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, yangerkun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org

On 1/19/23 4:03=E2=80=AFAM, Yu Kuai wrote:
> From: Yu Kuai <yukuai3-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
>=20
> Changes in v3:
>  - add ack tag from Tejun for patch 1,2
>  - as suggested by Tejun, update commit message and comments in patch 3
>=20
> The problem was found in iocost orignally([1]) that ioc can be freed in
> ioc_pd_free(). And later we found that there are more problem in
> iocost([2]).
>=20
> After some discussion, as suggested by Tejun([3]), we decide to fix the
> problem that parent pd can be freed before child pd in cgroup layer
> first. And the problem in [1] will be fixed later if this patchset is
> applied.

Doesn't apply against for-6.3/block (or linux-next or my for-next, for
that matter). Can you resend a tested one against for-6.3/block?

--=20
Jens Axboe