linux-kernel - Re: [PATCH v2 -mmotm-2009-12-10-17-19] Fix wrong rss count of smaps

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Message-Id: <20100104121312.969D.A69D9226@jp.fujitsu.com>
Date:	Mon,  4 Jan 2010 12:13:37 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Minchan Kim <minchan.kim@...il.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Matt Mackall <mpm@...enic.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-mm <linux-mm@...ck.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 -mmotm-2009-12-10-17-19] Fix wrong rss count of smaps

> 
> Long time ago, We regards zero page as file_rss and
> vm_normal_page didn't return NULL in case of zero page
> 
> But now, we reinstated ZERO_PAGE and vm_normal_page's implementation
> can return NULL in case of zero page.
> 
> Then, RSS and PSS can't be matched in smaps_pte_range.
> This patch fixes it.
> 
> Acked-by: Hugh Dickins <hugh.dickins@...cali.co.uk>
> Acked-by: Matt Mackall <mpm@...enic.com>
> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Signed-off-by: Minchan Kim <minchan.kim@...il.com>

	Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>



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