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 refcount_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); 33