From mboxrd@z Thu Jan  1 00:00:00 1970
Subject: Re: [PATCH 03/10] mm: tag reseve pages
References: <20070806102922.907530000@chello.nl>
	<20070806103658.356795000@chello.nl>
	<Pine.LNX.4.64.0708061111390.25069@schroedinger.engr.sgi.com>
From: Andi Kleen <andi@firstfloor.org>
Date: 06 Aug 2007 21:34:07 +0200
In-Reply-To: <Pine.LNX.4.64.0708061111390.25069@schroedinger.engr.sgi.com>
Message-ID: <p73r6mglaog.fsf@bingen.suse.de>
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To: Christoph Lameter <clameter@sgi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, David Miller <davem@davemloft.net>, Andrew Morton <akpm@linux-foundation.org>, Daniel Phillips <phillips@google.com>, Pekka Enberg <penberg@cs.helsinki.fi>, Matt Mackall <mpm@selenic.com>, Lee Schermerhorn <Lee.Schermerhorn@hp.com>, Steve Dickson <SteveD@redhat.com>
List-ID: <linux-mm.kvack.org>

Christoph Lameter <clameter@sgi.com> writes:

> On Mon, 6 Aug 2007, Peter Zijlstra wrote:
> 
> > ===================================================================
> > --- linux-2.6-2.orig/include/linux/mm_types.h
> > +++ linux-2.6-2/include/linux/mm_types.h
> > @@ -60,6 +60,7 @@ struct page {
> >  	union {
> >  		pgoff_t index;		/* Our offset within mapping. */
> >  		void *freelist;		/* SLUB: freelist req. slab lock */
> > +		int reserve;		/* page_alloc: page is a reserve page */
> 
> Extending page struct ???

Note it's an union.

-Andi

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