linux-kernel - Re: mmotm 2011-06-15-16-56 uploaded (mm/page

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Date:	Thu, 16 Jun 2011 09:25:42 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org
Subject: Re: mmotm 2011-06-15-16-56 uploaded (mm/page_cgroup.c)

On Thu, 2011-06-16 at 11:35 +0100, Mel Gorman wrote:
> > This patch removes definitions of node_start/end_pfn() in each archs
> > and defines a unified one in linux/mmzone.h. It's not under
> > CONFIG_NEED_MULTIPLE_NODES, now.
> 
> Does anyone remember *why* this did not happen in the first place? I
> can't think of a good reason so I've cc'd Dave Hansen as he might
> remember. 

You mean why it's not under CONFIG_NEED_MULTIPLE_NODES?  I'd guess it's
just because it keeps working in all configurations since the
pg_data_t->node_*_pfn entries are defined everywhere.

Is that what you're asking?

-- Dave

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