diff --git a/mm/mlock.c b/mm/mlock.c
index b90c595..3446b7e 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -65,7 +65,7 @@
 			ret = make_pages_present(start, end);
 	}
 
-	vma->vm_mm->locked_vm -= pages;
+	mm->locked_vm -= pages;
 out:
 	if (ret == -ENOMEM)
 		ret = -EAGAIN;