/*
   * Helper routines for the NFS client caches
   *
   * Copyright (c) 2009 Trond Myklebust <Trond.Myklebust@netapp.com>
   */
  
  #include <linux/completion.h>
  #include <linux/sunrpc/cache.h>

  #include <linux/atomic.h>

  
  /*
   * Deferred request handling
   */
  struct nfs_cache_defer_req {
  	struct cache_req req;
  	struct cache_deferred_req deferred_req;
  	struct completion completion;
  	atomic_t count;
  };
  
  extern int nfs_cache_upcall(struct cache_detail *cd, char *entry_name);
  extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void);
  extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq);
  extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq);
  
  extern int nfs_cache_register(struct cache_detail *cd);
  extern void nfs_cache_unregister(struct cache_detail *cd);