X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=mm%2Fhugetlb.c;h=b61d2db9f34e6cfeff5f2dbe040bbf84a8c30ee4;hb=deda2e81961e96be4f2c09328baca4710a2fd1a0;hp=54d42b009dbeb5feb15c2fb08ac09239e0bf9feb;hpb=772320e84588dcbe1600ffb83e5f328f2209ac2a;p=karo-tx-linux.git

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);