1 files changed, 6 insertions, 0 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 54d42b009dbe..b61d2db9f34e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2349,11 +2349,17 @@ retry_avoidcopy:
         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);