netdev - Re: [Devel] Re: [RFC][PATCH] IP address restricting cgroup subsystem

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Date:	Fri, 9 Jan 2009 13:38:45 -0800
From:	Paul Menage <menage@...gle.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Grzegorz Nosek <root@...aldomain.pl>, containers@...ts.osdl.org,
	netdev@...r.kernel.org
Subject: Re: [Devel] Re: [RFC][PATCH] IP address restricting cgroup subsystem

On Wed, Jan 7, 2009 at 1:33 AM, Li Zefan <lizf@...fujitsu.com> wrote:
>>
>> Yes, I like that. Will update the patch. I assume that I must check
>> list_empty(&cgroup->children)?
>
> Yes.
>
>> Should I use cgroup_lock()/cgroup_unlock()
>
> Yes.

For checking the "children" list, you can just lock
ipaddr_subsys.hierarchy_mutex.

Paul
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