[RFC][PATCH] unify pfn_to_page [25/25] sparc64 pfn_to_page/page_to_pfn

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

sparc64 can use generic ones by defining ARCH_PFN_OFFSET as pfn_base.

Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitu.com>

Index: cleanup_pfn_page/include/asm-sparc64/page.h
===================================================================
--- cleanup_pfn_page.orig/include/asm-sparc64/page.h
+++ cleanup_pfn_page/include/asm-sparc64/page.h
@@ -129,8 +129,7 @@ typedef unsigned long pgprot_t;
   * the first physical page in the machine is at some huge physical address,
   * such as 4GB.   This is common on a partitioned E10000, for example.
   */
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *);
+#define ARCH_PFN_OFFSET		(pfn_base)

  #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)

Index: cleanup_pfn_page/arch/sparc64/mm/init.c
===================================================================
--- cleanup_pfn_page.orig/arch/sparc64/mm/init.c
+++ cleanup_pfn_page/arch/sparc64/mm/init.c
@@ -320,16 +320,6 @@ void __kprobes flush_icache_range(unsign
  	}
  }

-unsigned long page_to_pfn(struct page *page)
-{
-	return (unsigned long) ((page - mem_map) + pfn_base);
-}
-
-struct page *pfn_to_page(unsigned long pfn)
-{
-	return (mem_map + (pfn - pfn_base));
-}
-
  void show_mem(void)
  {
  	printk("Mem-info:\n");