/* SPDX-License-Identifier: GPL-2.0 *//* * 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;	refcount_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_net(struct net *net, struct cache_detail *cd);extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd);extern int nfs_cache_register_sb(struct super_block *sb,				 struct cache_detail *cd);extern void nfs_cache_unregister_sb(struct super_block *sb,				    struct cache_detail *cd);