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

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Message-Id: <20111226153138.0376bd66.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 26 Dec 2011 15:31:38 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
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>
Subject: Re: [PATCH 5/6] memcg: fix broken boolen expression

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..

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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