nfs41: nfs41: pass *session in seq_args and seq_res

To be used for getting the rpc's minorversion and for nfs41 xdr
{en,de}coding of the sequence operation.
Reset the seq session ptrs for minorversion=0 rpc calls.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index d837f10..f567506 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -162,11 +162,11 @@
 };
 
 struct nfs4_sequence_args {
-	/* stub */
+	struct nfs4_session	*sa_session;
 };
 
 struct nfs4_sequence_res {
-	/* stub */
+	struct nfs4_session	*sr_session;
 };
 
 /*