X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=mm%2Frmap.c;h=c5bc241127b205734eaef62964d6d152941174cc;hp=45ba250babd86674f0320e0a19dc9cf5916fc864;hb=60815cf2e05057db5b78e398d9734c493560b11e;hpb=bfc7249cc293deac8f2678b7ec3d2407b68c0a33

diff --git a/mm/rmap.c b/mm/rmap.c
index 45ba250babd8..c5bc241127b2 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -583,7 +583,8 @@ pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address)
 	 * without holding anon_vma lock for write.  So when looking for a
 	 * genuine pmde (in which to find pte), test present and !THP together.
 	 */
-	pmde = ACCESS_ONCE(*pmd);
+	pmde = *pmd;
+	barrier();
 	if (!pmd_present(pmde) || pmd_trans_huge(pmde))
 		pmd = NULL;
 out: