linux-kernel - Re: [PATCH 5/6] memcg: fix broken boolen expression

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Date:	Mon, 26 Dec 2011 08:57:24 +0200
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	Balbir Singh <bsingharora@...il.com>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>, stable@...r.kernel.org
Subject: Re: [PATCH 5/6] memcg: fix broken boolen expression

On Mon, Dec 26, 2011 at 03:31:38PM +0900, KAMEZAWA Hiroyuki wrote:
> On Sat, 24 Dec 2011 05:00:18 +0200
> "Kirill A. Shutemov" <kirill@...temov.name> wrote:
> 
> > From: "Kirill A. Shutemov" <kirill@...temov.name>
> > 
> > action != CPU_DEAD || action != CPU_DEAD_FROZEN is always true.
> > 
> > Signed-off-by: Kirill A. Shutemov <kirill@...temov.name>
> 
> maybe this should go stable..

CC stable@

> 
> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> 
> 
> > ---
> >  mm/memcontrol.c |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> > 
> > diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> > index b27ce0f..3833a7b 100644
> > --- a/mm/memcontrol.c
> > +++ b/mm/memcontrol.c
> > @@ -2100,7 +2100,7 @@ static int __cpuinit memcg_cpu_hotplug_callback(struct notifier_block *nb,
> >  		return NOTIFY_OK;
> >  	}
> >  
> > -	if ((action != CPU_DEAD) || action != CPU_DEAD_FROZEN)
> > +	if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
> >  		return NOTIFY_OK;
> >  
> >  	for_each_mem_cgroup(iter)
> > -- 
> > 1.7.7.3
> > 
> > --
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> 

-- 
 Kirill A. Shutemov
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