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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | File: linux/mbcache.h | |
3 | ||
4 | (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> | |
5 | */ | |
6 | ||
1da177e4 LT |
7 | struct mb_cache_entry { |
8 | struct list_head e_lru_list; | |
9 | struct mb_cache *e_cache; | |
10 | unsigned short e_used; | |
11 | unsigned short e_queued; | |
12 | struct block_device *e_bdev; | |
13 | sector_t e_block; | |
14 | struct list_head e_block_list; | |
15 | struct { | |
16 | struct list_head o_list; | |
17 | unsigned int o_key; | |
2aec7c52 | 18 | } e_index; |
1da177e4 LT |
19 | }; |
20 | ||
d96336b0 JH |
21 | struct mb_cache { |
22 | struct list_head c_cache_list; | |
23 | const char *c_name; | |
24 | atomic_t c_entry_count; | |
25 | int c_max_entries; | |
26 | int c_bucket_bits; | |
27 | struct kmem_cache *c_entry_cache; | |
28 | struct list_head *c_block_hash; | |
29 | struct list_head *c_index_hash; | |
30 | }; | |
31 | ||
1da177e4 LT |
32 | /* Functions on caches */ |
33 | ||
2aec7c52 | 34 | struct mb_cache *mb_cache_create(const char *, int); |
8c52ab42 | 35 | void mb_cache_shrink(struct block_device *); |
1da177e4 LT |
36 | void mb_cache_destroy(struct mb_cache *); |
37 | ||
38 | /* Functions on cache entries */ | |
39 | ||
335e92e8 | 40 | struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *, gfp_t); |
1da177e4 | 41 | int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *, |
2aec7c52 | 42 | sector_t, unsigned int); |
1da177e4 LT |
43 | void mb_cache_entry_release(struct mb_cache_entry *); |
44 | void mb_cache_entry_free(struct mb_cache_entry *); | |
45 | struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *, | |
46 | struct block_device *, | |
47 | sector_t); | |
2aec7c52 | 48 | struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, |
1da177e4 LT |
49 | struct block_device *, |
50 | unsigned int); | |
2aec7c52 | 51 | struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *, |
1da177e4 LT |
52 | struct block_device *, |
53 | unsigned int); |