diff --git a/mm/mlock.c b/mm/mlock.c
index 0336f52..5c4fff9 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -497,7 +497,7 @@ static int apply_vma_lock_flags(unsigned long start, size_t len,
 		if (vma->vm_start != tmp)
 			return -ENOMEM;
 
-		newflags = vma->vm_flags & VM_LOCKED_CLEAR_MASK;
+		newflags = vma->vm_flags & ~VM_LOCKED_MASK;
 		newflags |= flags;
 		/* Here we know that  vma->vm_start <= nstart < vma->vm_end. */
 		tmp = vma->vm_end;
@@ -661,7 +661,7 @@ static int apply_mlockall_flags(int flags)
 	struct vm_area_struct *vma, *prev = NULL;
 	vm_flags_t to_add = 0;
 
-	current->mm->def_flags &= VM_LOCKED_CLEAR_MASK;
+	current->mm->def_flags &= ~VM_LOCKED_MASK;
 	if (flags & MCL_FUTURE) {
 		current->mm->def_flags |= VM_LOCKED;
 
@@ -681,7 +681,7 @@ static int apply_mlockall_flags(int flags)
 	for_each_vma(vmi, vma) {
 		vm_flags_t newflags;
 
-		newflags = vma->vm_flags & VM_LOCKED_CLEAR_MASK;
+		newflags = vma->vm_flags & ~VM_LOCKED_MASK;
 		newflags |= to_add;
 
 		/* Ignore errors */