Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mbcache.h
Go to the documentation of this file.
1 /*
2  File: linux/mbcache.h
3 
4  (C) 2001 by Andreas Gruenbacher, <[email protected]>
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);
Generated on Thu Jan 10 2013 14:51:49 for Linux Kernel by   doxygen 1.8.2