linux-kernel - Re: [RESEND][PATCH v4] cgroup: Use CAP_SYS_RESOURCE to allow a process to migrate other tasks between cgroups

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Message-ID: <20161209132721.GA30394@mtj.duckdns.org>
Date:   Fri, 9 Dec 2016 08:27:21 -0500
From:   Tejun Heo <tj@...nel.org>
To:     John Stultz <john.stultz@...aro.org>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Mickaël Salaün <mic@...ikod.net>,
        Daniel Mack <daniel@...que.org>,
        "David S. Miller" <davem@...emloft.net>, kafai@...com,
        Florian Westphal <fw@...len.de>,
        Harald Hoyer <harald@...hat.com>,
        Network Development <netdev@...r.kernel.org>,
        Sargun Dhillon <sargun@...gun.me>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Li Zefan <lizefan@...wei.com>,
        Jonathan Corbet <corbet@....net>,
        "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        Rom Lemarchand <romlem@...roid.com>,
        Colin Cross <ccross@...roid.com>,
        Dmitry Shmidt <dimitrysh@...gle.com>,
        Todd Kjos <tkjos@...gle.com>,
        Christian Poetzsch <christian.potzsch@...tec.com>,
        Amit Pundir <amit.pundir@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Kees Cook <keescook@...omium.org>,
        "Serge E . Hallyn" <serge@...lyn.com>,
        Linux API <linux-api@...r.kernel.org>
Subject: Re: [RESEND][PATCH v4] cgroup: Use CAP_SYS_RESOURCE to allow a
 process to migrate other tasks between cgroups

Hello, John.

On Thu, Dec 08, 2016 at 09:39:38PM -0800, John Stultz wrote:
> So just to clarify the discussion for my purposes and make sure I
> understood, per-cgroup CAP rules was not desired, and instead we
> should either utilize an existing cap (are there still objections to
> CAP_SYS_RESOURCE? - this isn't clear to me) or create a new one (ie,
> bring back the older CAP_CGROUP_MIGRATE patch).

Let's create a new one.  It looks to be a bit too different to share
with an existing one.

> Tejun: Do you have a more finished version of your patch that I should
> add my changes on top of?

Oh, just submit the patch on top of the current for-next.  I can queue
mine on top of yours.  They are mostly orthogonal.

Thanks.

-- 
tejun