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2a82b8be DC |
1 | /* |
2 | * Copyright (c) 2006-2007 Silicon Graphics, Inc. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it would be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | #ifndef __XFS_MRU_CACHE_H__ | |
19 | #define __XFS_MRU_CACHE_H__ | |
20 | ||
22328d71 | 21 | struct xfs_mru_cache; |
2a82b8be | 22 | |
22328d71 CH |
23 | struct xfs_mru_cache_elem { |
24 | struct list_head list_node; | |
25 | unsigned long key; | |
26 | }; | |
2a82b8be | 27 | |
22328d71 CH |
28 | /* Function pointer type for callback to free a client's data pointer. */ |
29 | typedef void (*xfs_mru_cache_free_func_t)(struct xfs_mru_cache_elem *elem); | |
2a82b8be DC |
30 | |
31 | int xfs_mru_cache_init(void); | |
32 | void xfs_mru_cache_uninit(void); | |
33 | int xfs_mru_cache_create(struct xfs_mru_cache **mrup, unsigned int lifetime_ms, | |
34 | unsigned int grp_count, | |
35 | xfs_mru_cache_free_func_t free_func); | |
2a82b8be DC |
36 | void xfs_mru_cache_destroy(struct xfs_mru_cache *mru); |
37 | int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key, | |
22328d71 CH |
38 | struct xfs_mru_cache_elem *elem); |
39 | struct xfs_mru_cache_elem * | |
40 | xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key); | |
2a82b8be | 41 | void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key); |
22328d71 CH |
42 | struct xfs_mru_cache_elem * |
43 | xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key); | |
2a82b8be DC |
44 | void xfs_mru_cache_done(struct xfs_mru_cache *mru); |
45 | ||
46 | #endif /* __XFS_MRU_CACHE_H__ */ |