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
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