fs/nfs/cache_lib.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Helper routines for the NFS client caches
   4  *
   5  * Copyright (c) 2009 Trond Myklebust <Trond.Myklebust@netapp.com>
   6  */
   7
   8 #include <linux/completion.h>
   9 #include <linux/sunrpc/cache.h>
  10 #include <linux/atomic.h>
  11
  12 /*
  13  * Deferred request handling
  14  */
  15 struct nfs_cache_defer_req {
  16         struct cache_req req;
  17         struct cache_deferred_req deferred_req;
  18         struct completion completion;
  19         atomic_t count;
  20 };
  21
  22 extern int nfs_cache_upcall(struct cache_detail *cd, char *entry_name);
  23 extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void);
  24 extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq);
  25 extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq);
  26
  27 extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd);
  28 extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd);
  29 extern int nfs_cache_register_sb(struct super_block *sb,
  30                                  struct cache_detail *cd);
  31 extern void nfs_cache_unregister_sb(struct super_block *sb,
  32                                     struct cache_detail *cd);