SUNRPC: Add an rpc_pipefs front end for the sunrpc cache code

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

2 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 8e5bf303665..6f52b4d7c44 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -64,6 +64,10 @@ struct cache_detail_procfs {
 	struct proc_dir_entry   *flush_ent, *channel_ent, *content_ent;
 };
 
+struct cache_detail_pipefs {
+	struct dentry *dir;
+};
+
 struct cache_detail {
 	struct module *		owner;
 	int			hash_size;
@@ -110,6 +114,7 @@ struct cache_detail {
 
 	union {
 		struct cache_detail_procfs procfs;
+		struct cache_detail_pipefs pipefs;
 	} u;
 };
 
@@ -135,6 +140,10 @@ struct cache_deferred_req {
 };
 
 
+extern const struct file_operations cache_file_operations_pipefs;
+extern const struct file_operations content_file_operations_pipefs;
+extern const struct file_operations cache_flush_operations_pipefs;
+
 extern struct cache_head *
 sunrpc_cache_lookup(struct cache_detail *detail,
 		    struct cache_head *key, int hash);
@@ -186,6 +195,10 @@ extern void cache_purge(struct cache_detail *detail);
 extern int cache_register(struct cache_detail *cd);
 extern void cache_unregister(struct cache_detail *cd);
 
+extern int sunrpc_cache_register_pipefs(struct dentry *parent, const char *,
+					mode_t, struct cache_detail *);
+extern void sunrpc_cache_unregister_pipefs(struct cache_detail *);
+
 extern void qword_add(char **bpp, int *lp, char *str);
 extern void qword_addhex(char **bpp, int *lp, char *buf, int blen);
 extern int qword_get(char **bpp, char *dest, int bufsize);
diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h
index 88332ef1e95..a92571a3455 100644
--- a/include/linux/sunrpc/rpc_pipe_fs.h
+++ b/include/linux/sunrpc/rpc_pipe_fs.h
@@ -47,6 +47,14 @@ extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);
 struct rpc_clnt;
 extern struct dentry *rpc_create_client_dir(struct dentry *, struct qstr *, struct rpc_clnt *);
 extern int rpc_remove_client_dir(struct dentry *);
+
+struct cache_detail;
+extern struct dentry *rpc_create_cache_dir(struct dentry *,
+					   struct qstr *,
+					   mode_t umode,
+					   struct cache_detail *);
+extern void rpc_remove_cache_dir(struct dentry *);
+
 extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *,
 				 const struct rpc_pipe_ops *, int flags);
 extern int rpc_unlink(struct dentry *);