linux-kernel - Re: [RFC] Track mlock()ed pages

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Message-ID: <45B9EA01.7010204@yahoo.com.au>
Date:	Fri, 26 Jan 2007 22:46:09 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Christoph Lameter <clameter@....com>
CC:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] Track mlock()ed pages

Christoph Lameter wrote:
> On Fri, 26 Jan 2007, Nick Piggin wrote:
> 
> 
>>Christoph Lameter wrote:
>>
>>>Add NR_MLOCK
>>>
>>>Track mlocked pages via a ZVC
>>
>>I think it is not quite right. You are tracking the number of ptes
>>that point to mlocked pages, which can be >= the actual number of pages.
> 
> 
> Mlocked pages are not inherited. I would expect sharing to be very rare.

Things like library and application text could easily have a lot of
sharing.

-- 
SUSE Labs, Novell Inc.
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