diff --git a/fs/namespace.c b/fs/namespace.c
index 083e340..2b12b7a 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1333,6 +1333,9 @@
 	LIST_HEAD(tmp_list);
 	struct mount *p;
 
+	if (how & UMOUNT_PROPAGATE)
+		propagate_mount_unlock(mnt);
+
 	/* Gather the mounts to umount */
 	for (p = mnt; p; p = next_mnt(p, mnt)) {
 		p->mnt.mnt_flags |= MNT_UMOUNT;