diff --git a/[refs] b/[refs]
index d4fcc98b12f2..c6eb809957bf 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 44e2aa937e698ea95dd86b2a4fabd734ef2c76db
+refs/heads/master: 572438f9b52236bd8938b1647cc15e027d27ef55
diff --git a/trunk/mm/internal.h b/trunk/mm/internal.h
index 6a697bb97fc5..dedb0aff673f 100644
--- a/trunk/mm/internal.h
+++ b/trunk/mm/internal.h
@@ -62,7 +62,7 @@ extern bool is_free_buddy_page(struct page *page);
  */
 static inline unsigned long page_order(struct page *page)
 {
-	VM_BUG_ON(!PageBuddy(page));
+	/* PageBuddy() must be checked by the caller */
 	return page_private(page);
 }