[RFC][PATCH] unify pfn_to_page [23/25] xtensa pfn_to_page/page_to_pfn

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xtensa can use generic ones.

Signed-Off-By: KAMEZAWA Hiroyuki <[email protected]u.com>

Index: cleanup_pfn_page/include/asm-xtensa/page.h
===================================================================
--- cleanup_pfn_page.orig/include/asm-xtensa/page.h
+++ cleanup_pfn_page/include/asm-xtensa/page.h
@@ -109,10 +109,7 @@ void copy_user_page(void *to,void* from,
 #define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)
 #define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))
 #define pfn_valid(pfn)		((unsigned long)pfn < max_mapnr)
-#ifndef CONFIG_DISCONTIGMEM
-# define pfn_to_page(pfn)	(mem_map + (pfn))
-# define page_to_pfn(page)	((unsigned long)((page) - mem_map))
-#else
+#ifdef CONFIG_DISCONTIGMEM
 # error CONFIG_DISCONTIGMEM not supported
 #endif


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