From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v12 8/8] cgroup: implement the PIDs subsystem
Date: Tue, 19 May 2015 10:00:55 +0200
Message-ID: <20150519080055.GA3644@twins.programming.kicks-ass.net>
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To: Aleksa Sarai <cyphar@cyphar.com>
Cc: tj@kernel.org, lizefan@huawei.com, mingo@redhat.com, richard@nod.at, fweisbec@gmail.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>

On Tue, May 19, 2015 at 12:51:07AM +1000, Aleksa Sarai wrote:

> However, it should be noted that organisational operations (adding and
> removing tasks from a PIDs hierarchy) will *not* be prevented.

This is how you spell: broken controller.