summaryrefslogtreecommitdiffstats
path: root/kernel/fs/nfs/cache_lib.h
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/fs/nfs/cache_lib.h')
-rw-r--r--kernel/fs/nfs/cache_lib.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/fs/nfs/cache_lib.h b/kernel/fs/nfs/cache_lib.h
new file mode 100644
index 000000000..4116d2c3f
--- /dev/null
+++ b/kernel/fs/nfs/cache_lib.h
@@ -0,0 +1,31 @@
+/*
+ * 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_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);