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mbcache2: rename to mbcache

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Since old mbcache code is gone, let's rename new code to mbcache since
number 2 is now meaningless. This is just a mechanical replacement.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Jan Kara 2016-02-22 22:35:22 -05:00 • committed by Theodore Ts'o
parent f0c8b46238
commit 7a2508e1b6
10 changed files with 204 additions and 204 deletions
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53
include/linux/mbcache.h Normal file
View file

@ -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 */