linux-kernel - Re: A "domain invalid" cgroup *can* sometimes have member tasks

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Message-ID: <CAKgNAkhMqq=VRKrLp89f5RR_gmsLSrd5W+qN8jv5C_ZVwzFs_Q@mail.gmail.com>
Date:   Wed, 21 Feb 2018 08:45:21 +0100
From:   "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     "Serge E. Hallyn" <serge@...lyn.com>,
        lkml <linux-kernel@...r.kernel.org>,
        "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>
Subject: Re: A "domain invalid" cgroup *can* sometimes have member tasks

Hi Tehjun,

On 21 February 2018 at 00:01, Tejun Heo <tj@...nel.org> wrote:
> On Tue, Feb 20, 2018 at 11:35:47AM -0800, Tejun Heo wrote:
>> Hmm... nr_populated_domain_children check should have caught that
>> condition and rejected it.  Will look into what's going on.
>
> Ah, okay, I was special-casing the first level children case too
> early.  If you nest the test case by one more level, it fails as
> intended.  I'll fix the checks.

Thanks for looking into this so quickly! Please CC me on the patch.

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/