LXR linux/fs/xfs/xfs_mru

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   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