Re: [PATCH] device_cgroup: don't grab mutex in rcu callback

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On Wed, Jan 23, 2013 at 10:17:06AM -0700, Jerry Snitselaar wrote:
> commit 103a197 "security/device_cgroup: lock assert fails in
> dev_exception_clean()" grabs devcgroup_mutex to fix assert failure,
> but mutex can't be grabbed in rcu callback. Since there shouldn't be
> any other references when css_free is called, mutex isn't needed for
> list cleanup in devcgroup_css_free().
> 
> Signed-off-by: Jerry Snitselaar <jerry.snitselaar@xxxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

-- 
tejun
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