diff --git a/[refs] b/[refs]
index 3109e645c8e0..48ac4dd311ea 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: be9cd873e2a706a688e37224d48e135efd8c0d26
+refs/heads/master: acc50c110cf6f1a8bd1af410b2c7bc29ca624678
diff --git a/trunk/mm/page_alloc.c b/trunk/mm/page_alloc.c
index 72869ea5c513..5712898c951b 100644
--- a/trunk/mm/page_alloc.c
+++ b/trunk/mm/page_alloc.c
@@ -5985,6 +5985,8 @@ static void dump_page_flags(unsigned long flags)
 	unsigned long mask;
 	int i;
 
+	BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) - 1 != __NR_PAGEFLAGS);
+
 	printk(KERN_ALERT "page flags: %#lx(", flags);
 
 	/* remove zone id */