linux-kernel - Re: [PATCH 1/9] ksm: fix mlockfreed to munlocked

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Message-ID: <4B0C71F0.3000209@redhat.com>
Date:	Tue, 24 Nov 2009 18:53:20 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Hugh Dickins <hugh.dickins@...cali.co.uk>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Izik Eidus <ieidus@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Chris Wright <chrisw@...hat.com>, Mel Gorman <mel@....ul.ie>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 1/9] ksm: fix mlockfreed to munlocked

On 11/24/2009 11:40 AM, Hugh Dickins wrote:
> When KSM merges an mlocked page, it has been forgetting to munlock it:
> that's been left to free_page_mlock(), which reports it in /proc/vmstat
> as unevictable_pgs_mlockfreed instead of unevictable_pgs_munlocked (and
> whinges "Page flag mlocked set for process" in mmotm, whereas mainline
> is silently forgiving).  Call munlock_vma_page() to fix that.
>
> Signed-off-by: Hugh Dickins<hugh.dickins@...cali.co.uk>
>
>    
Acked-by: Rik van Riel <riel@...hat.com>
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