> --- linux.orig/mm/page_alloc.c 2013-03-19 16:09:03.736450861 -0500
> +++ linux/mm/page_alloc.c 2013-03-22 17:07:43.895405617 -0500
> @@ -4161,10 +4161,23 @@ int __meminit __early_pfn_to_nid(unsigne
> {
> unsigned long start_pfn, end_pfn;
> int i, nid;
> + /*
> + NOTE: The following SMP-unsafe globals are only used early
> + in boot when the kernel is running single-threaded.
> + */
> + static unsigned long last_start_pfn, last_end_pfn;
> + static int last_nid;
Why don't you mark them __meminitdata? They seems freeable.
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