linux-kernel - Re: [PATCH] cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy

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Message-ID: <Yd9HTVxEPo2/zfou@slm.duckdns.org>
Date:   Wed, 12 Jan 2022 11:25:33 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Michal Koutný <mkoutny@...e.com>
Cc:     longman@...hat.com, akpm@...ux-foundation.org,
        cgroups@...r.kernel.org, corbet@....net, frederic@...nel.org,
        guro@...com, hannes@...xchg.org, juri.lelli@...hat.com,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, lizefan.x@...edance.com,
        mtosatti@...hat.com, pauld@...hat.com, peterz@...radead.org,
        shuah@...nel.org
Subject: Re: [PATCH] cgroup/cpuset: Make child cpusets restrict parents on v1
 hierarchy

On Fri, Dec 17, 2021 at 04:48:54PM +0100, Michal Koutný wrote:
> The commit 1f1562fcd04a ("cgroup/cpuset: Don't let child cpusets
> restrict parent in default hierarchy") inteded to relax the check only
> on the default hierarchy (or v2 mode) but it dropped the check in v1
> too.
> 
> This patch returns and separates the legacy-only validations so that
> they can be considered only in the v1 mode, which should enforce the old
> constraints for the sake of compatibility.
> 
> Fixes: 1f1562fcd04a ("cgroup/cpuset: Don't let child cpusets restrict parent in default hierarchy")
> Suggested-by: Waiman Long <longman@...hat.com>
> Signed-off-by: Michal Koutný <mkoutny@...e.com>

Applied to cgroup/for-5.17-fixes.

Thanks.

-- 
tejun