make slub.c:slab_address() static

slab_address() can become static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>

mm/slub.c

@@ -308,7 +308,7 @@ static inline int is_end(void *addr)
 	return (unsigned long)addr & PAGE_MAPPING_ANON;
 }
 
-void *slab_address(struct page *page)
+static void *slab_address(struct page *page)
 {
 	return page->end - PAGE_MAPPING_ANON;
 }