linux-kernel - Re: [PATCH] mm: inactive-clean list

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Message-Id: <20060718072545.7cfed5b2.akpm@osdl.org>
Date:	Tue, 18 Jul 2006 07:25:45 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Christoph Lameter <clameter@....com>
Cc:	mbligh@...igh.org, a.p.zijlstra@...llo.nl, linux-mm@...ck.org,
	torvalds@...l.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: inactive-clean list

On Tue, 18 Jul 2006 07:03:12 -0700 (PDT)
Christoph Lameter <clameter@....com> wrote:

> What other types of non freeable pages could exist?

PageWriteback() pages (potentially all of memory)

Pinned pages (various transient conditions, mainly get_user_pages())

Some pages whose buffers are attached to an ext3 journal.

Possibly NFS unstable pages.
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