--- /dev/null
+/*
+ * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
+ * Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004
+ */
+#ifndef _ASM_MMZONE_H_
+#define _ASM_MMZONE_H_
+
+#include <asm/page.h>
+#include <mmzone.h>
+
+#ifdef CONFIG_DISCONTIGMEM
+
+#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT)
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* _ASM_MMZONE_H_ */