linux-kernel - Re: [PATCHSET] fix CGROUP VS RCU

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Message-Id: <20081121010637.0f71ffff.akpm@linux-foundation.org>
Date:	Fri, 21 Nov 2008 01:06:37 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	Paul Menage <menage@...gle.com>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Serge Hallyn <serue@...ibm.com>
Subject: Re: [PATCHSET] fix CGROUP VS RCU

On Fri, 21 Nov 2008 16:49:13 +0800 Lai Jiangshan <laijs@...fujitsu.com> wrote:

> 
> current some cgroup struct are protected by RCU.
> 
> struct protected by RCU:
> 	struct css_set, struct cgroup_subsys_state, struct cgroup
> 
> pointer protected by RCU:
> 	struct task_struct.cgroups, struct css_set.subsys[*],
> 	struct cgroup_subsys_state.cgroup
> the last two pointers are readonly pointer!
> 
> these patches are fix these structs, and pointers. And a faker:
> struct cgroup_subsys.root
> 
> Not cleanup all yet.
> 

These patches aren't sequence numbered.  In what order should they be
applied?

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