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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
2a82b8be DC |
2 | /* |
3 | * Copyright (c) 2006-2007 Silicon Graphics, Inc. | |
4 | * All Rights Reserved. | |
2a82b8be DC |
5 | */ |
6 | #ifndef __XFS_MRU_CACHE_H__ | |
7 | #define __XFS_MRU_CACHE_H__ | |
8 | ||
22328d71 | 9 | struct xfs_mru_cache; |
2a82b8be | 10 | |
22328d71 CH |
11 | struct xfs_mru_cache_elem { |
12 | struct list_head list_node; | |
13 | unsigned long key; | |
14 | }; | |
2a82b8be | 15 | |
22328d71 | 16 | /* Function pointer type for callback to free a client's data pointer. */ |
7fcd3efa | 17 | typedef void (*xfs_mru_cache_free_func_t)(void *, struct xfs_mru_cache_elem *); |
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18 | |
19 | int xfs_mru_cache_init(void); | |
20 | void xfs_mru_cache_uninit(void); | |
7fcd3efa CH |
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); | |
2a82b8be DC |
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, | |
22328d71 CH |
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); | |
2a82b8be | 29 | void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key); |
22328d71 CH |
30 | struct xfs_mru_cache_elem * |
31 | xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key); | |
2a82b8be DC |
32 | void xfs_mru_cache_done(struct xfs_mru_cache *mru); |
33 | ||
34 | #endif /* __XFS_MRU_CACHE_H__ */ |