162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0+ 262306a36Sopenharmony_ci/* radix-tree helpers that are only shared with xarray */ 362306a36Sopenharmony_ci 462306a36Sopenharmony_cistruct kmem_cache; 562306a36Sopenharmony_cistruct rcu_head; 662306a36Sopenharmony_ci 762306a36Sopenharmony_ciextern struct kmem_cache *radix_tree_node_cachep; 862306a36Sopenharmony_ciextern void radix_tree_node_rcu_free(struct rcu_head *head); 9