linux-kernel - Re: [patch] mm, thp: fix mlock statistics

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Message-ID: <20120928135114.GB19474@redhat.com>
Date:	Fri, 28 Sep 2012 15:51:14 +0200
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michel Lespinasse <walken@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	stable@...r.kernel.org
Subject: Re: [patch] mm, thp: fix mlock statistics

On Wed, Sep 26, 2012 at 07:29:58PM -0700, David Rientjes wrote:
> NR_MLOCK is only accounted in single page units: there's no logic to
> handle transparent hugepages.  This patch checks the appropriate number
> of pages to adjust the statistics by so that the correct amount of memory
> is reflected.

*snip*

> Reported-by: Hugh Dickens <hughd@...gle.com>
> Signed-off-by: David Rientjes <rientjes@...gle.com>
> ---
>  mm/internal.h   |    3 ++-
>  mm/mlock.c      |    6 ++++--
>  mm/page_alloc.c |    2 +-
>  3 files changed, 7 insertions(+), 4 deletions(-)

Reviewed-by: Andrea Arcangeli <aarcange@...hat.com>

Thanks!
Andrea
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