The attached change seems to fix the lazy-umount problem. David --- diff --git a/fs/namespace.c b/fs/namespace.c index 5adeeea2a4d9..d43f0fa152e9 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2472,7 +2472,7 @@ static int do_move_mount(struct path *old_path, struct path *new_path) if (old->mnt_ns && !attached) goto out1; - if (old->mnt.mnt_flags & MNT_LOCKED) + if (old->mnt.mnt_flags & (MNT_LOCKED | MNT_UMOUNT)) goto out1; if (old_path->dentry != old_path->mnt->mnt_root)
