LXR linux/fs/nfs/cache

   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 */
  15struct nfs_cache_defer_req {
  16        struct cache_req req;
  17        struct cache_deferred_req deferred_req;
  18        struct completion completion;
  19        refcount_t count;
  20};
  21
  22extern int nfs_cache_upcall(struct cache_detail *cd, char *entry_name);
  23extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void);
  24extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq);
  25extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq);
  26
  27extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd);
  28extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd);
  29extern int nfs_cache_register_sb(struct super_block *sb,
  30                                 struct cache_detail *cd);
  31extern void nfs_cache_unregister_sb(struct super_block *sb,
  32                                    struct cache_detail *cd);
  33