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SubjectRe: [PATCH 2/3] cgroup: replace tasklist_lock with rcu_read_lock
On Tue, Jan 03, 2012 at 09:18:31PM -0800, Mandeep Singh Baines wrote:
> We can replace the tasklist_lock in cgroup_attach_proc with an
> rcu_read_lock.
>
> Changes in V4:
> * https://lkml.org/lkml/2011/12/23/284 (Frederic Weisbecker)
> * Minimize size of rcu_read_lock critical section
> * Add comment
> * https://lkml.org/lkml/2011/12/26/136 (Li Zefan)
> * Split into two patches
> Changes in V3:
> * https://lkml.org/lkml/2011/12/22/419 (Frederic Weisbecker)
> * Add an rcu_read_lock to protect against exit
> Changes in V2:
> * https://lkml.org/lkml/2011/12/22/86 (Tejun Heo)
> * Use a goto instead of returning -EAGAIN
>
> Suggested-by: Frederic Weisbecker <fweisbec@gmail.com>
> Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
> Cc: Tejun Heo <tj@kernel.org>
> Cc: Li Zefan <lizf@cn.fujitsu.com>
> Cc: containers@lists.linux-foundation.org
> Cc: cgroups@vger.kernel.org
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Oleg Nesterov <oleg@redhat.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Paul Menage <paul@paulmenage.org>

Applied 1 and 2 to cgroup/for-3.4 w/ ack's added.

Thanks.

--
tejun


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