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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2006-2007 Silicon Graphics, Inc.4 * All Rights Reserved.5 */6#ifndef __XFS_MRU_CACHE_H__7#define __XFS_MRU_CACHE_H__8 9struct xfs_mru_cache;10 11struct xfs_mru_cache_elem {12 struct list_head list_node;13 unsigned long key;14};15 16/* Function pointer type for callback to free a client's data pointer. */17typedef void (*xfs_mru_cache_free_func_t)(void *, struct xfs_mru_cache_elem *);18 19int xfs_mru_cache_init(void);20void xfs_mru_cache_uninit(void);21int xfs_mru_cache_create(struct xfs_mru_cache **mrup, void *data,22 unsigned int lifetime_ms, unsigned int grp_count,23 xfs_mru_cache_free_func_t free_func);24void xfs_mru_cache_destroy(struct xfs_mru_cache *mru);25int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key,26 struct xfs_mru_cache_elem *elem);27struct xfs_mru_cache_elem *28xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key);29void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key);30struct xfs_mru_cache_elem *31xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key);32void xfs_mru_cache_done(struct xfs_mru_cache *mru);33 34#endif /* __XFS_MRU_CACHE_H__ */35