fs/nfs/cache_lib.h

   1 /*
   2  * Helper routines for the NFS client caches
   3  *
   4  * Copyright (c) 2009 Trond Myklebust <Trond.Myklebust@netapp.com>
   5  */
   6
   7 #include <linux/completion.h>
   8 #include <linux/sunrpc/cache.h>
   9 #include <linux/atomic.h>
  10
  11 /*
  12  * Deferred request handling
  13  */
  14 struct nfs_cache_defer_req {
  15         struct cache_req req;
  16         struct cache_deferred_req deferred_req;
  17         struct completion completion;
  18         atomic_t count;
  19 };
  20
  21 extern int nfs_cache_upcall(struct cache_detail *cd, char *entry_name);
  22 extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void);
  23 extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq);
  24 extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq);
  25
  26 extern void nfs_cache_init(struct cache_detail *cd);
  27 extern void nfs_cache_destroy(struct cache_detail *cd);
  28 extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd);
  29 extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd);
  30 extern int nfs_cache_register_sb(struct super_block *sb,
  31                                  struct cache_detail *cd);
  32 extern void nfs_cache_unregister_sb(struct super_block *sb,
  33                                     struct cache_detail *cd);