Re: [PATCH -next v3 0/3] blk-cgroup: make sure pd_free_fn() is called in order

[Yu Kuai]

Hi, Jens

在 2023/01/20 2:54, Jens Axboe 写道:
> On 1/19/23 4:03 AM, Yu Kuai wrote:
> > From: Yu Kuai <yukuai3@xxxxxxxxxx>
> >
> > Changes in v3:
> >   - add ack tag from Tejun for patch 1,2
> >   - as suggested by Tejun, update commit message and comments in patch 3
> >
> > 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]).
> >
> > 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?

This is weird, I just test latest linux-next, and I can apply this
patchset on the top of following commit:

For latest for-6.3/block, this patch 2 can't be applied because
following commit is not here:

e3ff8887e7db blk-cgroup: fix missing pd_online_fn() while activating policy

But this patch is already merged into 6.2-rc5.

Thanks,
Kuai