projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | File: linux/mbcache.h | |
| 3 | ||
| 4 | (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> | |
| 5 | */ | |
| 1da177e4 LT |
6 | struct mb_cache_entry { |
| 7 | struct list_head e_lru_list; | |
| 8 | struct mb_cache *e_cache; | |
| 9 | unsigned short e_used; | |
| 10 | unsigned short e_queued; | |
| 3e037e52 | 11 | atomic_t e_refcnt; |
| 1da177e4 LT |
12 | struct block_device *e_bdev; |
| 13 | sector_t e_block; | |
| 3e037e52 | 14 | struct hlist_bl_node e_block_list; |
| 1da177e4 | 15 | struct { |
| 3e037e52 | 16 | struct hlist_bl_node o_list; |
| 1da177e4 | 17 | unsigned int o_key; |
| 2aec7c52 | 18 | } e_index; |
| 3e037e52 M |
19 | struct hlist_bl_head *e_block_hash_p; |
| 20 | struct hlist_bl_head *e_index_hash_p; | |
| 1da177e4 LT |
21 | }; |
| 22 | ||
| d96336b0 JH |
23 | struct mb_cache { |
| 24 | struct list_head c_cache_list; | |
| 25 | const char *c_name; | |
| 26 | atomic_t c_entry_count; | |
| 27 | int c_max_entries; | |
| 28 | int c_bucket_bits; | |
| 29 | struct kmem_cache *c_entry_cache; | |
| 3e037e52 M |
30 | struct hlist_bl_head *c_block_hash; |
| 31 | struct hlist_bl_head *c_index_hash; | |
| d96336b0 JH |
32 | }; |
| 33 | ||
| 1da177e4 LT |
34 | /* Functions on caches */ |
| 35 | ||
| 2aec7c52 | 36 | struct mb_cache *mb_cache_create(const char *, int); |
| 8c52ab42 | 37 | void mb_cache_shrink(struct block_device *); |
| 1da177e4 LT |
38 | void mb_cache_destroy(struct mb_cache *); |
| 39 | ||
| 40 | /* Functions on cache entries */ | |
| 41 | ||
| 335e92e8 | 42 | struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *, gfp_t); |
| 1da177e4 | 43 | int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *, |
| 2aec7c52 | 44 | sector_t, unsigned int); |
| 1da177e4 LT |
45 | void mb_cache_entry_release(struct mb_cache_entry *); |
| 46 | void mb_cache_entry_free(struct mb_cache_entry *); | |
| 47 | struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *, | |
| 48 | struct block_device *, | |
| 49 | sector_t); | |
| 2aec7c52 | 50 | struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, |
| 1da177e4 LT |
51 | struct block_device *, |
| 52 | unsigned int); | |
| 2aec7c52 | 53 | struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *, |
| 1da177e4 LT |
54 | struct block_device *, |
| 55 | unsigned int); |