895 static struct mount *next_mnt(struct mount *p, struct mount *root)  in next_mnt()  argument
900 			if (p == root)  in next_mnt()
925 	struct dentry *root;  in vfs_kern_mount()  local
937 	root = mount_fs(type, flags, name, data);  in vfs_kern_mount()
938 	if (IS_ERR(root)) {  in vfs_kern_mount()
941 		return ERR_CAST(root);  in vfs_kern_mount()
944 	mnt->mnt.mnt_root = root;  in vfs_kern_mount()
945 	mnt->mnt.mnt_sb = root->d_sb;  in vfs_kern_mount()
949 	list_add_tail(&mnt->mnt_instance, &root->d_sb->s_mounts);  in vfs_kern_mount()
955 static struct mount *clone_mnt(struct mount *old, struct dentry *root,  in clone_mnt()  argument
1002 	mnt->mnt.mnt_root = dget(root);  in clone_mnt()
1166 int generic_show_options(struct seq_file *m, struct dentry *root)  in generic_show_options()  argument
1171 	options = rcu_dereference(root->d_sb->s_options);  in generic_show_options()
1455 		if (&mnt->mnt == current->fs->root.mnt ||  in do_umount()
1497 	if (&mnt->mnt == current->fs->root.mnt && !(flags & MNT_DETACH)) {  in do_umount()
1782 		   struct vfsmount *root)  in iterate_mounts()  argument
1785 	int res = f(root, arg);  in iterate_mounts()
1788 	list_for_each_entry(mnt, &real_mount(root)->mnt_list, mnt_list) {  in iterate_mounts()
2755 	new_ns->root = NULL;  in alloc_mnt_ns()
2780 	old = ns->root;  in copy_mnt_ns()
2797 	new_ns->root = new;  in copy_mnt_ns()
2810 			if (&p->mnt == new_fs->root.mnt) {  in copy_mnt_ns()
2811 				new_fs->root.mnt = mntget(&q->mnt);  in copy_mnt_ns()
2846 		new_ns->root = mnt;  in create_mnt_ns()
2924 			 const struct path *root)  in is_path_reachable()  argument
2926 	while (&mnt->mnt != root->mnt && mnt_has_parent(mnt)) {  in is_path_reachable()
2930 	return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);  in is_path_reachable()
2971 	struct path new, old, parent_path, root_parent, root;  in SYSCALL_DEFINE2()  local
2991 	get_fs_root(current->fs, &root);  in SYSCALL_DEFINE2()
2999 	root_mnt = real_mount(root.mnt);  in SYSCALL_DEFINE2()
3016 	if (root.mnt->mnt_root != root.dentry)  in SYSCALL_DEFINE2()
3029 	if (!is_path_reachable(new_mnt, new.dentry, &root))  in SYSCALL_DEFINE2()
3047 	chroot_fs_refs(&root, &new);  in SYSCALL_DEFINE2()
3057 	path_put(&root);  in SYSCALL_DEFINE2()
3070 	struct path root;  in init_mount_tree()  local
3088 	root.mnt = mnt;  in init_mount_tree()
3089 	root.dentry = mnt->mnt_root;  in init_mount_tree()
3092 	set_fs_pwd(current->fs, &root);  in init_mount_tree()
3093 	set_fs_root(current->fs, &root);  in init_mount_tree()
3140 	drop_collected_mounts(&ns->root->mnt);  in put_mnt_ns()
3183 	ns_root.mnt = &current->nsproxy->mnt_ns->root->mnt;  in current_chrooted()
3285 	struct path root;  in mntns_install()  local
3300 	root.mnt    = &mnt_ns->root->mnt;  in mntns_install()
3301 	root.dentry = mnt_ns->root->mnt.mnt_root;  in mntns_install()
3302 	path_get(&root);  in mntns_install()
3303 	while(d_mountpoint(root.dentry) && follow_down_one(&root))  in mntns_install()
3307 	set_fs_pwd(fs, &root);  in mntns_install()
3308 	set_fs_root(fs, &root);  in mntns_install()
3310 	path_put(&root);  in mntns_install()