vserver 1.9.3

[linux-2.6.git] / include / asm-um / page.h

diff --git a/include/asm-um/page.h b/include/asm-um/page.h
index ad97bc0..f69b0f1 100644 (file)
--- a/include/asm-um/page.h
+++ b/include/asm-um/page.h
@@ -1,10 +1,14 @@
+/*
+ *  Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
 #ifndef __UM_PAGE_H
 #define __UM_PAGE_H
 
 struct page;
 
 #include "asm/arch/page.h"
-#include "asm/bug.h"
 
 #undef __pa
 #undef __va
@@ -24,25 +28,25 @@ extern unsigned long uml_physmem;
 
 #define __va_space (8*1024*1024)
 
-extern unsigned long region_pa(void *virt);
-extern void *region_va(unsigned long phys);
-
-#define __pa(virt) region_pa((void *) (virt))
-#define __va(phys) region_va((unsigned long) (phys))
-
-extern unsigned long page_to_pfn(struct page *page);
-extern struct page *pfn_to_page(unsigned long pfn);
+extern unsigned long to_phys(void *virt);
+extern void *to_virt(unsigned long phys);
 
-extern struct page *phys_to_page(unsigned long phys);
+#define __pa(virt) to_phys((void *) virt)
+#define __va(phys) to_virt((unsigned long) phys)
 
-#define virt_to_page(v) (phys_to_page(__pa(v)))
+#define page_to_pfn(page) ((page) - mem_map)
+#define pfn_to_page(pfn) (mem_map + (pfn))
 
-extern struct page *page_mem_map(struct page *page);
-
-#define pfn_valid(pfn) (page_mem_map(pfn_to_page(pfn)) != NULL)
-#define virt_addr_valid(v) pfn_valid(__pa(v) >> PAGE_SHIFT)
+#define phys_to_pfn(p) ((p) >> PAGE_SHIFT)
+#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
 
+#define pfn_valid(pfn) ((pfn) < max_mapnr)
+#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
+  
 extern struct page *arch_validate(struct page *page, int mask, int order);
 #define HAVE_ARCH_VALIDATE
 
+extern void arch_free_page(struct page *page, int order);
+#define HAVE_ARCH_FREE_PAGE
+
 #endif