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SubjectRe: [PATCH] [TRIVIAL] memcg: fix memory.memsw.usage_in_bytes for root cgroup
On Wed, 9 Dec 2009 16:21:09 -0800, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Thu, 10 Dec 2009 08:59:29 +0900
> KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
>
> > On Wed, 9 Dec 2009 17:48:58 +0200
> > "Kirill A. Shutemov" <kirill@shutemov.name> wrote:
> >
> > > We really want to take MEM_CGROUP_STAT_SWAPOUT into account.
> > >
> > > Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
> > > Cc: stable@kernel.org
> >
> > Thanks.
> >
> > Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> >
>
> Is this bug sufficiently serious to justify a -stable backport?
>
> If so, why?
>
Well, the value of <root cgroup>/memory.memsw.usage_in_bytes would be incorrect
(swap usage would not be counted) without this patch. So the impact of this bug
depends on how the value is used.

Anyway, this bug exists only in 2.6.32 and this patch can be applied onto it
without any change.


Thanks,
Daisuke Nishimura.


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