/*  File: linux/mbcache.h  (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>*//* Hardwire the number of additional indexes */#define MB_CACHE_INDEXES_COUNT 1struct mb_cache_entry {	struct list_head		e_lru_list;	struct mb_cache			*e_cache;	unsigned short			e_used;	unsigned short			e_queued;	struct block_device		*e_bdev;	sector_t			e_block;	struct list_head		e_block_list;	struct {		struct list_head	o_list;		unsigned int		o_key;	} e_indexes[0];};struct mb_cache_op {	int (*free)(struct mb_cache_entry *, int);};/* Functions on caches */struct mb_cache * mb_cache_create(const char *, struct mb_cache_op *, size_t,				  int, int);void mb_cache_shrink(struct block_device *);void mb_cache_destroy(struct mb_cache *);/* Functions on cache entries */struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *);int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *,			  sector_t, unsigned int[]);void mb_cache_entry_release(struct mb_cache_entry *);void mb_cache_entry_free(struct mb_cache_entry *);struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *,					  struct block_device *,					  sector_t);#if !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0)struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, int,						 struct block_device *, 						 unsigned int);struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *, int,						struct block_device *, 						unsigned int);#endif