SUNRPC: Add the helper function 'rpc_call_null()'

Does a NULL RPC call and returns a pointer to the resulting rpc_task. The
call may be either synchronous or asynchronous.

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

1 files changed, 10 insertions, 0 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 4e91f3110938..5a28ffac99ea 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1455,6 +1455,16 @@ static int rpc_ping(struct rpc_clnt *clnt, int flags)
         return err;
 }
 
+struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int flags)
+{
+        struct rpc_message msg = {
+                .rpc_proc = &rpcproc_null,
+                .rpc_cred = cred,
+        };
+        return rpc_do_run_task(clnt, &msg, flags, &rpc_default_ops, NULL);
+}
+EXPORT_SYMBOL(rpc_call_null);
+
 #ifdef RPC_DEBUG
 void rpc_show_tasks(void)
 {