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TOMOYO Linux Cross Reference
Linux/include/linux/mbcache.h

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  1 /*
  2   File: linux/mbcache.h
  3 
  4   (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
  5 */
  6 
  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;
 18         } e_index;
 19 };
 20 
 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 
 32 /* Functions on caches */
 33 
 34 struct mb_cache *mb_cache_create(const char *, int);
 35 void mb_cache_shrink(struct block_device *);
 36 void mb_cache_destroy(struct mb_cache *);
 37 
 38 /* Functions on cache entries */
 39 
 40 struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *, gfp_t);
 41 int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *,
 42                           sector_t, unsigned int);
 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);
 48 struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache,
 49                                                  struct block_device *, 
 50                                                  unsigned int);
 51 struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *,
 52                                                 struct block_device *, 
 53                                                 unsigned int);
 54 

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