On Tue, 23 Oct 2012, Michal Hocko wrote:
> From e8d79e446b00e57c195c59570df0f2ec435ca39d Mon Sep 17 00:00:00 2001
> From: Michal Hocko <mhocko@xxxxxxx>
> 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@xxxxxxx>
> Reviewed-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
> Cc: David Rientjes <rientjes@xxxxxxxxxx>
> Cc: Jiang Liu <liuj97@xxxxxxxxx>
> Cc: Len Brown <len.brown@xxxxxxxxx>
> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> Cc: Paul Mackerras <paulus@xxxxxxxxx>
> Cc: Christoph Lameter <cl@xxxxxxxxx>
> Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
> Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
> Cc: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>
> Cc: Mel Gorman <mel@xxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
This fixes the build error on linux-next of this morning, thanks.
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