linux-kernel - Re: [PATCH 3/9] [RFC] Add a back-pointer from struct cg_cgroup

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Date:	Tue, 21 Jul 2009 16:48:56 -0700
From:	Paul Menage <menage@...gle.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	balbir@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, containers@...ts.linux-foundation.org,
	kamezawa.hiroyu@...fujitsu.com
Subject: Re: [PATCH 3/9] [RFC] Add a back-pointer from struct cg_cgroup_link 
	to struct cgroup

On Fri, Jul 3, 2009 at 12:07 AM, Li Zefan<lizf@...fujitsu.com> wrote:
>
>> +     write_lock_irq(&css_set_lock);
>
> can be read_lock(&css_set_lock);

I simplified the whole thing by removing the task_lock(current) and
expanding the RCU section to cover the point where we read
current->cgroups too.

Paul
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