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 | |
9 | struct xfs_mru_cache; |
10 | |
11 | struct 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. */ |
17 | typedef void (*xfs_mru_cache_free_func_t)(void *, struct xfs_mru_cache_elem *); |
18 | |
19 | int xfs_mru_cache_init(void); |
20 | void xfs_mru_cache_uninit(void); |
21 | int 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); |
24 | void xfs_mru_cache_destroy(struct xfs_mru_cache *mru); |
25 | int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key, |
26 | struct xfs_mru_cache_elem *elem); |
27 | struct xfs_mru_cache_elem * |
28 | xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key); |
29 | void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key); |
30 | struct xfs_mru_cache_elem * |
31 | xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key); |
32 | void xfs_mru_cache_done(struct xfs_mru_cache *mru); |
33 | |
34 | #endif /* __XFS_MRU_CACHE_H__ */ |
35 | |