From: Nick Piggin <npiggin@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, dgc@sgi.com
Subject: Re: [RFC] Free up page->private for compound pages
Date: Thu, 5 Apr 2007 05:36:48 +0200 [thread overview]
Message-ID: <20070405033648.GG11192@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0704042016490.7885@schroedinger.engr.sgi.com>
On Wed, Apr 04, 2007 at 08:19:22PM -0700, Christoph Lameter wrote:
> If we add a new flag so that we can distinguish between the
> first page and the tail pages then we can avoid to use page->private
> in the first page of a compound page. page->private == page for the first
> page, so there is no real information in there.
Couldn't you use something like PageActive for the head page instead of
taking up a new flag, seeing as we don't put compound pages on the LRU?
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next prev parent reply other threads:[~2007-04-05 3:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-05 3:19 Christoph Lameter
2007-04-05 3:36 ` Nick Piggin [this message]
2007-04-05 3:38 ` Christoph Lameter
2007-04-05 3:57 ` Nick Piggin
2007-04-05 4:04 ` Christoph Lameter
2007-04-05 4:25 ` Nick Piggin
2007-04-05 4:34 ` Christoph Lameter
2007-04-05 14:30 ` Hugh Dickins
2007-04-05 18:17 ` Christoph Lameter
2007-04-05 18:40 ` Hugh Dickins
2007-04-05 18:58 ` Christoph Lameter
2007-04-05 19:50 ` Hugh Dickins
2007-04-05 20:07 ` Christoph Lameter
2007-04-05 15:13 ` Dave Kleikamp
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