linux-kernel - Re: [BUGFIX][PATCH] fix memory.numa

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Message-ID: <BANLkTi=rJVKdhAeAjzfSJ0cMn3GiZpdXusxRL3cPYdJT+Ucneg@mail.gmail.com>
Date:	Fri, 10 Jun 2011 09:47:00 -0700
From:	Ying Han <yinghan@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"bsingharora@...il.com" <bsingharora@...il.com>
Subject: Re: [BUGFIX][PATCH] fix memory.numa_stat file permission

On Fri, Jun 10, 2011 at 12:44 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
> I'm sorry I missed this bug because I tested as 'root' ...
>
> =
> From 9fe15b548430635d4bbdc2b39e778dbb08e369c9 Mon Sep 17 00:00:00 2001
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Date: Fri, 10 Jun 2011 16:50:39 +0900
> Subject: [PATCH][BUGFIX] memcg: fix memory.numa_stat file permission
>
>
>  commit 406eb0c9ba765eb066406fd5ce9d5e2b169a4d5a adds memory.numa_stat
>  file for memory cgroup. But it's file permission is wrong.
>
> [kamezawa@...extal linux-2.6]$ ls -l /cgroup/memory/A/memory.numa_stat
> ---------- 1 root root 0 Jun  9 18:36 /cgroup/memory/A/memory.numa_stat
>
> This patch fixes the permission as
>
> [root@...extal kamezawa]# ls -l /cgroup/memory/A/memory.numa_stat
> -r--r--r-- 1 root root 0 Jun 10 16:49 /cgroup/memory/A/memory.numa_stat
>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> ---
>  mm/memcontrol.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index bd9052a..ce05835 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -4640,6 +4640,7 @@ static struct cftype mem_cgroup_files[] = {
>        {
>                .name = "numa_stat",
>                .open = mem_control_numa_stat_open,
> +               .mode = S_IRUGO,
>        },
>  #endif
>  };
> --
> 1.7.4.1
>
>
>

Acked-by: Ying Han <yinghan@...gle.com>

--Ying
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