955 static struct mount *clone_mnt(struct mount *old, struct dentry *root,  in clone_mnt()  argument
958 	struct super_block *sb = old->mnt.mnt_sb;  in clone_mnt()
962 	mnt = alloc_vfsmnt(old->mnt_devname);  in clone_mnt()
969 		mnt->mnt_group_id = old->mnt_group_id;  in clone_mnt()
977 	mnt->mnt.mnt_flags = old->mnt.mnt_flags & ~(MNT_WRITE_HOLD|MNT_MARKED);  in clone_mnt()
997 	    (!(flag & CL_EXPIRE) || list_empty(&old->mnt_expire)))  in clone_mnt()
1010 	    ((flag & CL_SHARED_TO_SLAVE) && IS_MNT_SHARED(old))) {  in clone_mnt()
1011 		list_add(&mnt->mnt_slave, &old->mnt_slave_list);  in clone_mnt()
1012 		mnt->mnt_master = old;  in clone_mnt()
1015 		if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(old))  in clone_mnt()
1016 			list_add(&mnt->mnt_share, &old->mnt_share);  in clone_mnt()
1017 		if (IS_MNT_SLAVE(old))  in clone_mnt()
1018 			list_add(&mnt->mnt_slave, &old->mnt_slave);  in clone_mnt()
1019 		mnt->mnt_master = old->mnt_master;  in clone_mnt()
1027 		if (!list_empty(&old->mnt_expire))  in clone_mnt()
1028 			list_add(&mnt->mnt_expire, &old->mnt_expire);  in clone_mnt()
1205 	char *old = sb->s_options;  in replace_mount_options()  local
1207 	if (old) {  in replace_mount_options()
1209 		kfree(old);  in replace_mount_options()
2063 	struct mount *mnt = NULL, *old, *parent;  in do_loopback()  local
2081 	old = real_mount(old_path.mnt);  in do_loopback()
2085 	if (IS_MNT_UNBINDABLE(old))  in do_loopback()
2091 	if (!check_mnt(old) && old_path.dentry->d_op != &ns_dentry_operations)  in do_loopback()
2094 	if (!recurse && has_locked_children(old, old_path.dentry))  in do_loopback()
2098 		mnt = copy_tree(old, old_path.dentry, CL_COPY_MNT_NS_FILE);  in do_loopback()
2100 		mnt = clone_mnt(old, old_path.dentry, 0);  in do_loopback()
2226 	struct mount *old;  in do_move_mount()  local
2240 	old = real_mount(old_path.mnt);  in do_move_mount()
2244 	if (!check_mnt(p) || !check_mnt(old))  in do_move_mount()
2247 	if (old->mnt.mnt_flags & MNT_LOCKED)  in do_move_mount()
2254 	if (!mnt_has_parent(old))  in do_move_mount()
2263 	if (IS_MNT_SHARED(old->mnt_parent))  in do_move_mount()
2269 	if (IS_MNT_SHARED(p) && tree_contains_unbindable(old))  in do_move_mount()
2273 		if (p == old)  in do_move_mount()
2276 	err = attach_recursive_mnt(old, real_mount(path->mnt), mp, &parent_path);  in do_move_mount()
2282 	list_del_init(&old->mnt_expire);  in do_move_mount()
2769 	struct mount *old;  in copy_mnt_ns()  local
2780 	old = ns->root;  in copy_mnt_ns()
2791 	new = copy_tree(old, old->mnt.mnt_root, copy_flags);  in copy_mnt_ns()
2805 	p = old;  in copy_mnt_ns()
2819 		p = next_mnt(p, old);  in copy_mnt_ns()
2824 			p = next_mnt(p, old);  in copy_mnt_ns()
2971 	struct path new, old, parent_path, root_parent, root;  in SYSCALL_DEFINE2()  local
2983 	error = user_path_dir(put_old, &old);  in SYSCALL_DEFINE2()
2987 	error = security_sb_pivotroot(&old, &new);  in SYSCALL_DEFINE2()
2992 	old_mp = lock_mount(&old);  in SYSCALL_DEFINE2()
3000 	old_mnt = real_mount(old.mnt);  in SYSCALL_DEFINE2()
3026 	if (!is_path_reachable(old_mnt, old.dentry, &new))  in SYSCALL_DEFINE2()
3059 	path_put(&old);  in SYSCALL_DEFINE2()