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55 lines
1.6 KiB
55 lines
1.6 KiB
/* |
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File: linux/mbcache.h |
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(C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
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*/ |
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struct mb_cache_entry { |
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struct list_head e_lru_list; |
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struct mb_cache *e_cache; |
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unsigned short e_used; |
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unsigned short e_queued; |
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atomic_t e_refcnt; |
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struct block_device *e_bdev; |
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sector_t e_block; |
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struct hlist_bl_node e_block_list; |
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struct { |
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struct hlist_bl_node o_list; |
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unsigned int o_key; |
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} e_index; |
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struct hlist_bl_head *e_block_hash_p; |
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struct hlist_bl_head *e_index_hash_p; |
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}; |
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struct mb_cache { |
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struct list_head c_cache_list; |
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const char *c_name; |
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atomic_t c_entry_count; |
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int c_max_entries; |
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int c_bucket_bits; |
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struct kmem_cache *c_entry_cache; |
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struct hlist_bl_head *c_block_hash; |
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struct hlist_bl_head *c_index_hash; |
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}; |
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/* Functions on caches */ |
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struct mb_cache *mb_cache_create(const char *, int); |
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void mb_cache_shrink(struct block_device *); |
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void mb_cache_destroy(struct mb_cache *); |
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/* Functions on cache entries */ |
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struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *, gfp_t); |
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int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *, |
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sector_t, unsigned int); |
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void mb_cache_entry_release(struct mb_cache_entry *); |
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void mb_cache_entry_free(struct mb_cache_entry *); |
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struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *, |
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struct block_device *, |
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sector_t); |
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struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, |
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struct block_device *, |
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unsigned int); |
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struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *, |
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struct block_device *, |
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unsigned int);
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