From: Andrew Morton <akpm@linux-foundation.org>

Fix one CONFIG_MMU=n build error.

More remain:

mm/built-in.o(.text+0x1bb28): In function `truncate_complete_page':
: undefined reference to `__clear_page_mlock'
mm/built-in.o(.text+0x1ca40): In function `__invalidate_mapping_pages':
: undefined reference to `__clear_page_mlock'
mm/built-in.o(.text+0x1d24c): In function `invalidate_inode_pages2_range':
: undefined reference to `__clear_page_mlock'

Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/vmscan.c~vmscan-unevictable-lru-scan-sysctl-nommu-fix mm/vmscan.c
--- a/mm/vmscan.c~vmscan-unevictable-lru-scan-sysctl-nommu-fix
+++ a/mm/vmscan.c
@@ -2413,7 +2413,7 @@ static void show_page_path(struct page *
 		       dentry_path(dentry, buf, 256), pgoff);
 		spin_unlock(&mapping->i_mmap_lock);
 	} else {
-#ifdef CONFIG_MM_OWNER
+#if defined(CONFIG_MM_OWNER) && defined(CONFIG_MMU)
 		struct anon_vma *anon_vma;
 		struct vm_area_struct *vma;
 
_