linux-kernel - Re: mmotm 2012-10-22-17-08 uploaded (memory

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Message-ID: <alpine.DEB.2.00.1210241531540.3524@chino.kir.corp.google.com>
Date:	Wed, 24 Oct 2012 15:32:28 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Michal Hocko <mhocko@...e.cz>
cc:	akpm@...ux-foundation.org, Randy Dunlap <rdunlap@...otime.net>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-next@...r.kernel.org, Jiang Liu <liuj97@...il.com>,
	Len Brown <len.brown@...el.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Christoph Lameter <cl@...ux.com>,
	Minchan Kim <minchan.kim@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Mel Gorman <mel@....ul.ie>
Subject: Re: mmotm 2012-10-22-17-08 uploaded (memory_hotplug.c)

On Tue, 23 Oct 2012, Michal Hocko wrote:

> From e8d79e446b00e57c195c59570df0f2ec435ca39d Mon Sep 17 00:00:00 2001
> From: Michal Hocko <mhocko@...e.cz>
> Date: Tue, 23 Oct 2012 11:07:11 +0200
> Subject: [PATCH] mm: make zone_pcp_reset independ on MEMORY_HOTREMOVE
> 
> 340175b7 (mm/hotplug: free zone->pageset when a zone becomes empty)
> introduced zone_pcp_reset and hided it inside CONFIG_MEMORY_HOTREMOVE.
> Since "memory-hotplug: allocate zone's pcp before onlining pages" the
> function is also called from online_pages which is defined outside
> CONFIG_MEMORY_HOTREMOVE which causes a linkage error.
> 
> The function, although not used outside of MEMORY_{HOTPLUT,HOTREMOVE},
> seems like universal enough so let's keep it at its current location
> and only remove the HOTREMOVE guard.
> 
> Signed-off-by: Michal Hocko <mhocko@...e.cz>
> Reviewed-by: Wen Congyang <wency@...fujitsu.com>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: Jiang Liu <liuj97@...il.com>
> Cc: Len Brown <len.brown@...el.com>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Christoph Lameter <cl@...ux.com>
> Cc: Minchan Kim <minchan.kim@...il.com>
> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
> Cc: Dave Hansen <dave@...ux.vnet.ibm.com>
> Cc: Mel Gorman <mel@....ul.ie>

Acked-by: David Rientjes <rientjes@...gle.com>

This fixes the build error on linux-next of this morning, thanks.
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