diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/mbcache.h | 53 | ||||
-rw-r--r-- | include/linux/mbcache2.h | 53 |
2 files changed, 53 insertions, 53 deletions
diff --git a/include/linux/mbcache.h b/include/linux/mbcache.h new file mode 100644 index 000000000000..a74a1f3082fb --- /dev/null +++ b/include/linux/mbcache.h @@ -0,0 +1,53 @@ +#ifndef _LINUX_MBCACHE_H +#define _LINUX_MBCACHE_H + +#include <linux/hash.h> +#include <linux/list_bl.h> +#include <linux/list.h> +#include <linux/atomic.h> +#include <linux/fs.h> + +struct mb_cache; + +struct mb_cache_entry { + /* List of entries in cache - protected by cache->c_list_lock */ + struct list_head e_list; + /* Hash table list - protected by bitlock in e_hash_list_head */ + struct hlist_bl_node e_hash_list; + atomic_t e_refcnt; + /* Key in hash - stable during lifetime of the entry */ + u32 e_key; + /* Block number of hashed block - stable during lifetime of the entry */ + sector_t e_block; + /* + * Head of hash list (for list bit lock) - stable. Combined with + * referenced bit of entry + */ + unsigned long _e_hash_list_head; +}; + +struct mb_cache *mb_cache_create(int bucket_bits); +void mb_cache_destroy(struct mb_cache *cache); + +int mb_cache_entry_create(struct mb_cache *cache, gfp_t mask, u32 key, + sector_t block); +void __mb_cache_entry_free(struct mb_cache_entry *entry); +static inline int mb_cache_entry_put(struct mb_cache *cache, + struct mb_cache_entry *entry) +{ + if (!atomic_dec_and_test(&entry->e_refcnt)) + return 0; + __mb_cache_entry_free(entry); + return 1; +} + +void mb_cache_entry_delete_block(struct mb_cache *cache, u32 key, + sector_t block); +struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, + u32 key); +struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache *cache, + struct mb_cache_entry *entry); +void mb_cache_entry_touch(struct mb_cache *cache, + struct mb_cache_entry *entry); + +#endif /* _LINUX_MBCACHE_H */ diff --git a/include/linux/mbcache2.h b/include/linux/mbcache2.h deleted file mode 100644 index c934843a6a31..000000000000 --- a/include/linux/mbcache2.h +++ /dev/null @@ -1,53 +0,0 @@ -#ifndef _LINUX_MB2CACHE_H -#define _LINUX_MB2CACHE_H - -#include <linux/hash.h> -#include <linux/list_bl.h> -#include <linux/list.h> -#include <linux/atomic.h> -#include <linux/fs.h> - -struct mb2_cache; - -struct mb2_cache_entry { - /* List of entries in cache - protected by cache->c_list_lock */ - struct list_head e_list; - /* Hash table list - protected by bitlock in e_hash_list_head */ - struct hlist_bl_node e_hash_list; - atomic_t e_refcnt; - /* Key in hash - stable during lifetime of the entry */ - u32 e_key; - /* Block number of hashed block - stable during lifetime of the entry */ - sector_t e_block; - /* - * Head of hash list (for list bit lock) - stable. Combined with - * referenced bit of entry - */ - unsigned long _e_hash_list_head; -}; - -struct mb2_cache *mb2_cache_create(int bucket_bits); -void mb2_cache_destroy(struct mb2_cache *cache); - -int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key, - sector_t block); -void __mb2_cache_entry_free(struct mb2_cache_entry *entry); -static inline int mb2_cache_entry_put(struct mb2_cache *cache, - struct mb2_cache_entry *entry) -{ - if (!atomic_dec_and_test(&entry->e_refcnt)) - return 0; - __mb2_cache_entry_free(entry); - return 1; -} - -void mb2_cache_entry_delete_block(struct mb2_cache *cache, u32 key, - sector_t block); -struct mb2_cache_entry *mb2_cache_entry_find_first(struct mb2_cache *cache, - u32 key); -struct mb2_cache_entry *mb2_cache_entry_find_next(struct mb2_cache *cache, - struct mb2_cache_entry *entry); -void mb2_cache_entry_touch(struct mb2_cache *cache, - struct mb2_cache_entry *entry); - -#endif /* _LINUX_MB2CACHE_H */ |