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