From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 15 Feb 2007 18:15:06 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
Subject: Re: [RFC] Remove unswappable anonymous pages off the LRU
In-Reply-To: <20070215171355.67c7e8b4.akpm@linux-foundation.org>
Message-ID: <Pine.LNX.4.64.0702151814210.1358@schroedinger.engr.sgi.com>
References: <Pine.LNX.4.64.0702151300500.31366@schroedinger.engr.sgi.com>
 <20070215171355.67c7e8b4.akpm@linux-foundation.org>
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, Nick Piggin <nickpiggin@yahoo.com.au>, Peter Zijlstra <a.p.zijlstra@chello.nl>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, "Martin J. Bligh" <mbligh@mbligh.org>, Rik van Riel <riel@redhat.com>
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On Thu, 15 Feb 2007, Andrew Morton wrote:

> Is it true that PageMlocked() pages are never on the LRU?  If so, perhaps
> we could overload the lru.next/prev on these pages to flag an mlocked page.

Yes. We could even use the lru to build a list of mlocked pages but then
certain optimizations with anonymous pages would no longer work.

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