Re: [resend][PATCH 2/2] mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur

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On Tue, 19 Oct 2010, KOSAKI Motohiro wrote:

> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 14ee899..222d8cc 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -51,6 +51,7 @@
>  #include <linux/kmemleak.h>
>  #include <linux/memory.h>
>  #include <linux/compaction.h>
> +#include <linux/vmstat.h>
>  #include <trace/events/kmem.h>
>  #include <linux/ftrace_event.h>
>  
> @@ -5013,6 +5014,8 @@ int __meminit init_per_zone_wmark_min(void)
>  		min_free_kbytes = 128;
>  	if (min_free_kbytes > 65536)
>  		min_free_kbytes = 65536;
> +
> +	refresh_zone_stat_thresholds();
>  	setup_per_zone_wmarks();
>  	setup_per_zone_lowmem_reserve();
>  	setup_per_zone_inactive_ratio();

setup_per_zone_wmarks() could change the min and low watermarks for a zone 
when refresh_zone_stat_thresholds() would have used the old value.

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