diff --git a/[refs] b/[refs]
index b91ad6f05901..1a66a63576e4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 26ba0cb63cb8df4e45394227f33c938920b11b88
+refs/heads/master: ba6f0ff3981e6263ab81ac512f04cca55b85ec81
diff --git a/trunk/include/linux/ksm.h b/trunk/include/linux/ksm.h
index 43bdab769fc3..74d691ee9121 100644
--- a/trunk/include/linux/ksm.h
+++ b/trunk/include/linux/ksm.h
@@ -78,7 +78,7 @@ static inline struct page *ksm_might_need_to_copy(struct page *page,
 	struct anon_vma *anon_vma = page_anon_vma(page);
 
 	if (!anon_vma ||
-	    (anon_vma == vma->anon_vma &&
+	    (anon_vma->root == vma->anon_vma->root &&
 	     page->index == linear_page_index(vma, address)))
 		return page;