434 	struct kernfs_root *root = kernfs_root(kn);  in kernfs_put_active()  local
446 	wake_up_all(&root->deactivate_waitq);  in kernfs_put_active()
460 	struct kernfs_root *root = kernfs_root(kn);  in kernfs_drain()  local
474 	wait_event(root->deactivate_waitq,  in kernfs_drain()
509 	struct kernfs_root *root;  in kernfs_put()  local
517 	root = kernfs_root(kn);  in kernfs_put()
542 	idr_remove(&root->ino_idr, kn->id.ino);  in kernfs_put()
552 		idr_destroy(&root->ino_idr);  in kernfs_put()
553 		kfree(root);  in kernfs_put()
620 static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root,  in __kernfs_new_node()  argument
638 	ret = idr_alloc_cyclic(&root->ino_idr, kn, 1, 0, GFP_ATOMIC);  in __kernfs_new_node()
639 	if (ret >= 0 && ret < root->last_ino)  in __kernfs_new_node()
640 		root->next_generation++;  in __kernfs_new_node()
641 	gen = root->next_generation;  in __kernfs_new_node()
642 	root->last_ino = ret;  in __kernfs_new_node()
693 struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root,  in kernfs_find_and_get_node_by_ino()  argument
699 	kn = idr_find(&root->ino_idr, ino);  in kernfs_find_and_get_node_by_ino()
935 	struct kernfs_root *root;  in kernfs_create_root()  local
938 	root = kzalloc(sizeof(*root), GFP_KERNEL);  in kernfs_create_root()
939 	if (!root)  in kernfs_create_root()
942 	idr_init(&root->ino_idr);  in kernfs_create_root()
943 	INIT_LIST_HEAD(&root->supers);  in kernfs_create_root()
944 	root->next_generation = 1;  in kernfs_create_root()
946 	kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO,  in kernfs_create_root()
949 		idr_destroy(&root->ino_idr);  in kernfs_create_root()
950 		kfree(root);  in kernfs_create_root()
955 	kn->dir.root = root;  in kernfs_create_root()
957 	root->syscall_ops = scops;  in kernfs_create_root()
958 	root->flags = flags;  in kernfs_create_root()
959 	root->kn = kn;  in kernfs_create_root()
960 	init_waitqueue_head(&root->deactivate_waitq);  in kernfs_create_root()
962 	if (!(root->flags & KERNFS_ROOT_CREATE_DEACTIVATED))  in kernfs_create_root()
965 	return root;  in kernfs_create_root()
975 void kernfs_destroy_root(struct kernfs_root *root)  in kernfs_destroy_root()  argument
977 	kernfs_remove(root->kn);	/* will also free @root */  in kernfs_destroy_root()
1002 	kn->dir.root = parent->dir.root;  in kernfs_create_dir_ns()
1034 	kn->dir.root = parent->dir.root;  in kernfs_create_empty_dir()
1195 						       struct kernfs_node *root)  in kernfs_next_descendant_post()  argument
1203 		return kernfs_leftmost_descendant(root);  in kernfs_next_descendant_post()
1206 	if (pos == root)  in kernfs_next_descendant_post()