linux-kernel - Re: [PATCH] cpuset: Fix the bug that subpart_cpus updated wrongly in update

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Message-ID: <YfF7tPxxNT2SxWxl@slm.duckdns.org>
Date:   Wed, 26 Jan 2022 06:49:56 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Tianchen Ding <dtcccc@...ux.alibaba.com>
Cc:     Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Waiman Long <longman@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpuset: Fix the bug that subpart_cpus updated wrongly in
 update_cpumask()

On Tue, Jan 18, 2022 at 06:05:18PM +0800, Tianchen Ding wrote:
> subparts_cpus should be limited as a subset of cpus_allowed, but it is
> updated wrongly by using cpumask_andnot(). Use cpumask_and() instead to
> fix it.
> 
> Fixes: ee8dde0cd2ce ("cpuset: Add new v2 cpuset.sched.partition flag")
> Signed-off-by: Tianchen Ding <dtcccc@...ux.alibaba.com>

Applied to cgroup/for-5.17-fixes.

Thanks.

-- 
tejun