diff --git a/mm/rmap.c b/mm/rmap.c
index 836c6c6..0895b5c 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -358,6 +358,7 @@
 	 */
 	if (vma->vm_flags & VM_LOCKED) {
 		*mapcount = 1;	/* break early from loop */
+		*vm_flags |= VM_LOCKED;
 		goto out_unmap;
 	}
 
diff --git a/mm/vmscan.c b/mm/vmscan.c
index dea7abd..94e86dd 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -630,9 +630,14 @@
 
 		referenced = page_referenced(page, 1,
 						sc->mem_cgroup, &vm_flags);
-		/* In active use or really unfreeable?  Activate it. */
+		/*
+		 * In active use or really unfreeable?  Activate it.
+		 * If page which have PG_mlocked lost isoltation race,
+		 * try_to_unmap moves it to unevictable list
+		 */
 		if (sc->order <= PAGE_ALLOC_COSTLY_ORDER &&
-					referenced && page_mapping_inuse(page))
+					referenced && page_mapping_inuse(page)
+					&& !(vm_flags & VM_LOCKED))
 			goto activate_locked;
 
 		/*