906 static struct mount *next_mnt(struct mount *p, struct mount *root)  in next_mnt()  argument
911 			if (p == root)  in next_mnt()
936 	struct dentry *root;  in vfs_kern_mount()  local
948 	root = mount_fs(type, flags, name, data);  in vfs_kern_mount()
949 	if (IS_ERR(root)) {  in vfs_kern_mount()
952 		return ERR_CAST(root);  in vfs_kern_mount()
955 	mnt->mnt.mnt_root = root;  in vfs_kern_mount()
956 	mnt->mnt.mnt_sb = root->d_sb;  in vfs_kern_mount()
960 	list_add_tail(&mnt->mnt_instance, &root->d_sb->s_mounts);  in vfs_kern_mount()
966 static struct mount *clone_mnt(struct mount *old, struct dentry *root,  in clone_mnt()  argument
1013 	mnt->mnt.mnt_root = dget(root);  in clone_mnt()
1177 int generic_show_options(struct seq_file *m, struct dentry *root)  in generic_show_options()  argument
1182 	options = rcu_dereference(root->d_sb->s_options);  in generic_show_options()
1466 		if (&mnt->mnt == current->fs->root.mnt ||  in do_umount()
1508 	if (&mnt->mnt == current->fs->root.mnt && !(flags & MNT_DETACH)) {  in do_umount()
1793 		   struct vfsmount *root)  in iterate_mounts()  argument
1796 	int res = f(root, arg);  in iterate_mounts()
1799 	list_for_each_entry(mnt, &real_mount(root)->mnt_list, mnt_list) {  in iterate_mounts()
2764 	new_ns->root = NULL;  in alloc_mnt_ns()
2789 	old = ns->root;  in copy_mnt_ns()
2806 	new_ns->root = new;  in copy_mnt_ns()
2819 			if (&p->mnt == new_fs->root.mnt) {  in copy_mnt_ns()
2820 				new_fs->root.mnt = mntget(&q->mnt);  in copy_mnt_ns()
2855 		new_ns->root = mnt;  in create_mnt_ns()
2933 			 const struct path *root)  in is_path_reachable()  argument
2935 	while (&mnt->mnt != root->mnt && mnt_has_parent(mnt)) {  in is_path_reachable()
2939 	return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);  in is_path_reachable()
2980 	struct path new, old, parent_path, root_parent, root;  in SYSCALL_DEFINE2()  local
3000 	get_fs_root(current->fs, &root);  in SYSCALL_DEFINE2()
3008 	root_mnt = real_mount(root.mnt);  in SYSCALL_DEFINE2()
3025 	if (root.mnt->mnt_root != root.dentry)  in SYSCALL_DEFINE2()
3038 	if (!is_path_reachable(new_mnt, new.dentry, &root))  in SYSCALL_DEFINE2()
3056 	chroot_fs_refs(&root, &new);  in SYSCALL_DEFINE2()
3066 	path_put(&root);  in SYSCALL_DEFINE2()
3079 	struct path root;  in init_mount_tree()  local
3097 	root.mnt = mnt;  in init_mount_tree()
3098 	root.dentry = mnt->mnt_root;  in init_mount_tree()
3101 	set_fs_pwd(current->fs, &root);  in init_mount_tree()
3102 	set_fs_root(current->fs, &root);  in init_mount_tree()
3149 	drop_collected_mounts(&ns->root->mnt);  in put_mnt_ns()
3192 	ns_root.mnt = &current->nsproxy->mnt_ns->root->mnt;  in current_chrooted()
3311 	struct path root;  in mntns_install()  local
3326 	root.mnt    = &mnt_ns->root->mnt;  in mntns_install()
3327 	root.dentry = mnt_ns->root->mnt.mnt_root;  in mntns_install()
3328 	path_get(&root);  in mntns_install()
3329 	while(d_mountpoint(root.dentry) && follow_down_one(&root))  in mntns_install()
3333 	set_fs_pwd(fs, &root);  in mntns_install()
3334 	set_fs_root(fs, &root);  in mntns_install()
3336 	path_put(&root);  in mntns_install()