linux-kernel - Re: [PATCH cgroup/for-3.10] cgroup: make cgroup_mutex outer to threadgroup

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Message-ID: <20130320183523.GA29365@redhat.com>
Date:	Wed, 20 Mar 2013 19:35:23 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Li Zefan <lizefan@...wei.com>, Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	cgroups@...r.kernel.org
Subject: Re: [PATCH cgroup/for-3.10] cgroup: make cgroup_mutex outer to
	threadgroup_lock

On 03/20, Tejun Heo wrote:
>
> So, let's leave the locking in cgroup alone.  I like
> cgroup_mutex to be the outer one.

OK... but sorry, I am a bit confused.

then we need "do not abuse ->cred_guard_mutex in threadgroup_lock()"
acked by you and Li. Please let me know if I should resend it.

Oleg.

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