linux-kernel - Re: [PATCH v5 3/9] writeback: convert variables to unsigned

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Message-Id: <20110228112846.454cea86.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 28 Feb 2011 11:28:46 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Greg Thelen <gthelen@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	containers@...ts.osdl.org, Andrea Righi <arighi@...eler.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Minchan Kim <minchan.kim@...il.com>,
	Ciju Rajan K <ciju@...ux.vnet.ibm.com>,
	David Rientjes <rientjes@...gle.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Chad Talbott <ctalbott@...gle.com>,
	Justin TerAvest <teravest@...gle.com>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCH v5 3/9] writeback: convert variables to unsigned

On Fri, 25 Feb 2011 13:35:54 -0800
Greg Thelen <gthelen@...gle.com> wrote:

> Convert two balance_dirty_pages() page counter variables (nr_reclaimable
> and nr_writeback) from 'long' to 'unsigned long'.
> 
> These two variables are used to store results from global_page_state().
> global_page_state() returns unsigned long and carefully sums per-cpu
> counters explicitly avoiding returning a negative value.
> 
> Signed-off-by: Greg Thelen <gthelen@...gle.com>

Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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