linux/include/linux/mbcache.h

/* SPDX-License-Identifier: GPL-2.0 */
#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;

/* Cache entry flags */
enum { … };

struct mb_cache_entry { … };

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,
			  u64 value, bool reusable);
void __mb_cache_entry_free(struct mb_cache *cache,
			   struct mb_cache_entry *entry);
void mb_cache_entry_wait_unused(struct mb_cache_entry *entry);
static inline void mb_cache_entry_put(struct mb_cache *cache,
				      struct mb_cache_entry *entry)
{ … }

struct mb_cache_entry *mb_cache_entry_delete_or_get(struct mb_cache *cache,
						    u32 key, u64 value);
struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *cache, u32 key,
					  u64 value);
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 */