[PATCH] x86-64: Remove redundant max_mapnr and replace with end_pfn
The FLATMEM people added it, but there doesn't seem a good reason
because end_pfn is identical.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index 135ffaa..e5ab4d2 100644
--- a/include/asm-x86_64/page.h
+++ b/include/asm-x86_64/page.h
@@ -32,6 +32,8 @@
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
+extern unsigned long end_pfn;
+
void clear_page(void *);
void copy_page(void *, void *);
@@ -111,7 +113,7 @@
#ifdef CONFIG_FLATMEM
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
+#define pfn_valid(pfn) ((pfn) < end_pfn)
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)