LXR linux/drivers/staging/ramster/zcache.h

   1
   2/*
   3 * zcache.h
   4 *
   5 * Copyright (c) 2012, Dan Magenheimer, Oracle Corp.
   6 */
   7
   8#ifndef _ZCACHE_H_
   9#define _ZCACHE_H_
  10
  11struct zcache_preload {
  12        struct tmem_obj *obj;
  13        struct tmem_objnode *objnodes[OBJNODE_TREE_MAX_PATH];
  14};
  15
  16struct tmem_pool;
  17
  18#define MAX_POOLS_PER_CLIENT 16
  19
  20#define MAX_CLIENTS 16
  21#define LOCAL_CLIENT ((uint16_t)-1)
  22
  23struct zcache_client {
  24        struct tmem_pool *tmem_pools[MAX_POOLS_PER_CLIENT];
  25        bool allocated;
  26        atomic_t refcount;
  27};
  28
  29extern struct tmem_pool *zcache_get_pool_by_id(uint16_t cli_id,
  30                                                        uint16_t poolid);
  31extern void zcache_put_pool(struct tmem_pool *pool);
  32
  33extern int zcache_put_page(int, int, struct tmem_oid *,
  34                                uint32_t, void *,
  35                                unsigned int, bool, int);
  36extern int zcache_get_page(int, int, struct tmem_oid *, uint32_t,
  37                                void *, size_t *, bool, int);
  38extern int zcache_flush_page(int, int, struct tmem_oid *, uint32_t);
  39extern int zcache_flush_object(int, int, struct tmem_oid *);
  40extern void zcache_decompress_to_page(char *, unsigned int, struct page *);
  41
  42#ifdef CONFIG_RAMSTER
  43extern void *zcache_pampd_create(char *, unsigned int, bool, int,
  44                                struct tmem_handle *);
  45int zcache_autocreate_pool(unsigned int cli_id, unsigned int pool_id, bool eph);
  46#endif
  47
  48#define MAX_POOLS_PER_CLIENT 16
  49
  50#define MAX_CLIENTS 16
  51#define LOCAL_CLIENT ((uint16_t)-1)
  52
  53#endif /* _ZCACHE_H_ */
  54