162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (c) 2006-2007 Silicon Graphics, Inc. 462306a36Sopenharmony_ci * All Rights Reserved. 562306a36Sopenharmony_ci */ 662306a36Sopenharmony_ci#ifndef __XFS_MRU_CACHE_H__ 762306a36Sopenharmony_ci#define __XFS_MRU_CACHE_H__ 862306a36Sopenharmony_ci 962306a36Sopenharmony_cistruct xfs_mru_cache; 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_cistruct xfs_mru_cache_elem { 1262306a36Sopenharmony_ci struct list_head list_node; 1362306a36Sopenharmony_ci unsigned long key; 1462306a36Sopenharmony_ci}; 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci/* Function pointer type for callback to free a client's data pointer. */ 1762306a36Sopenharmony_citypedef void (*xfs_mru_cache_free_func_t)(void *, struct xfs_mru_cache_elem *); 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ciint xfs_mru_cache_init(void); 2062306a36Sopenharmony_civoid xfs_mru_cache_uninit(void); 2162306a36Sopenharmony_ciint xfs_mru_cache_create(struct xfs_mru_cache **mrup, void *data, 2262306a36Sopenharmony_ci unsigned int lifetime_ms, unsigned int grp_count, 2362306a36Sopenharmony_ci xfs_mru_cache_free_func_t free_func); 2462306a36Sopenharmony_civoid xfs_mru_cache_destroy(struct xfs_mru_cache *mru); 2562306a36Sopenharmony_ciint xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key, 2662306a36Sopenharmony_ci struct xfs_mru_cache_elem *elem); 2762306a36Sopenharmony_cistruct xfs_mru_cache_elem * 2862306a36Sopenharmony_cixfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key); 2962306a36Sopenharmony_civoid xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key); 3062306a36Sopenharmony_cistruct xfs_mru_cache_elem * 3162306a36Sopenharmony_cixfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key); 3262306a36Sopenharmony_civoid xfs_mru_cache_done(struct xfs_mru_cache *mru); 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci#endif /* __XFS_MRU_CACHE_H__ */ 35