diff --git a/[refs] b/[refs]
index 47922fdcfe39..509a65428fcd 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a1b200e27c0426ea98c1231a2b78c6094eb073e4
+refs/heads/master: 3edd4fc9537d95e460d502987c63a90d6b9a7a82
diff --git a/trunk/mm/hugetlb.c b/trunk/mm/hugetlb.c
index 54d42b009dbe..b61d2db9f34e 100644
--- a/trunk/mm/hugetlb.c
+++ b/trunk/mm/hugetlb.c
@@ -2349,11 +2349,17 @@ static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,
 	ptep = huge_pte_offset(mm, address & huge_page_mask(h));
 	if (likely(pte_same(huge_ptep_get(ptep), pte))) {
 		/* Break COW */
+		mmu_notifier_invalidate_range_start(mm,
+			address & huge_page_mask(h),
+			(address & huge_page_mask(h)) + huge_page_size(h));
 		huge_ptep_clear_flush(vma, address, ptep);
 		set_huge_pte_at(mm, address, ptep,
 				make_huge_pte(vma, new_page, 1));
 		/* Make the old page be freed below */
 		new_page = old_page;
+		mmu_notifier_invalidate_range_end(mm,
+			address & huge_page_mask(h),
+			(address & huge_page_mask(h)) + huge_page_size(h));
 	}
 	page_cache_release(new_page);
 	page_cache_release(old_page);