linux-kernel - Re: [PATCH 5/6] memcg: simplify mem_cgroup_dirty

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Message-ID: <20101112082150.GG9131@cmpxchg.org>
Date:	Fri, 12 Nov 2010 09:21:50 +0100
From:	Johannes Weiner <hannes@...xchg.org>
To:	Greg Thelen <gthelen@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Minchan Kim <minchan.kim@...il.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] memcg: simplify mem_cgroup_dirty_info()

On Tue, Nov 09, 2010 at 01:24:30AM -0800, Greg Thelen wrote:
> Because mem_cgroup_page_stat() no longer returns negative numbers
> to indicate failure, mem_cgroup_dirty_info() does not need to check
> for such failures.

This is simply not true at this point in time.  Patch ordering is not
optional.
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