linux-kernel - Re: [PATCH 2/7] memcg: remove MEMCG_NR_FILE

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Message-ID: <20120707134856.GB23648@localhost>
Date:	Sat, 7 Jul 2012 21:48:56 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Sha Zhengju <handai.szj@...il.com>
Cc:	linux-mm@...ck.org, cgroups@...r.kernel.org,
	kamezawa.hiroyu@...fujitsu.com, gthelen@...gle.com,
	yinghan@...gle.com, akpm@...ux-foundation.org, mhocko@...e.cz,
	linux-kernel@...r.kernel.org, Sha Zhengju <handai.szj@...bao.com>
Subject: Re: [PATCH 2/7] memcg: remove MEMCG_NR_FILE_MAPPED

On Thu, Jun 28, 2012 at 06:58:31PM +0800, Sha Zhengju wrote:
> From: Sha Zhengju <handai.szj@...bao.com>
> 
> While accounting memcg page stat, it's not worth to use MEMCG_NR_FILE_MAPPED
> as an extra layer of indirection because of the complexity and presumed
> performance overhead. We can use MEM_CGROUP_STAT_FILE_MAPPED directly.
> 
> Signed-off-by: Sha Zhengju <handai.szj@...bao.com>
> ---
>  include/linux/memcontrol.h |   25 +++++++++++++++++--------
>  mm/memcontrol.c            |   24 +-----------------------
>  mm/rmap.c                  |    4 ++--
>  3 files changed, 20 insertions(+), 33 deletions(-)

Nice cleanup!

Acked-by: Fengguang Wu <fengguang.wu@...el.com>
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