linux-kernel - Re: [PATCH 1/2] clean up for early_pfn_to

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Date:	Fri, 13 Feb 2009 15:14:56 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	davem@...emlloft.net, heiko.carstens@...ibm.com,
	Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH 1/2] clean up for early_pfn_to_nid

> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> 
> Declaration of early_pfn_to_nid() is scattered over per-arch include files,
> and it seems it's complicated to know when the declaration is used.
> I think it makes fix-for-memmap-init not easy.
> 
> This patch moves all declaration to include/linux/mm.h
> 
> After this,
>   if !CONFIG_NODES_POPULATES_NODE_MAP && !CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
>      -> Use static definition in include/linux/mm.h
>   else if !CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
>      -> Use generic definition in mm/page_alloc.c
>   else
>      -> per-arch back end function will be called.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

at least, this patch works fine on my ia64 box.

	Tested-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>



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