NFSv4.1: remove GETATTR from ds writes

Any WRITE compound directed to a data server needs to have the
GETATTR calls suppressed.
Signed-off-by: NFred Isaman <iisaman@netapp.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -3149,6 +3149,10 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag
 {
 	struct nfs_server *server = NFS_SERVER(data->inode);
 
+	if (data->lseg) {
+		data->args.bitmask = NULL;
+		data->res.fattr = NULL;
+	} else
 		data->args.bitmask = server->cache_consistency_bitmask;
 	if (!data->write_done_cb)
 		data->write_done_cb = nfs4_write_done_cb;

fs/nfs/nfs4xdr.c

@@ -2275,6 +2275,7 @@ static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
 	encode_putfh(xdr, args->fh, &hdr);
 	encode_write(xdr, args, &hdr);
 	req->rq_snd_buf.flags |= XDRBUF_WRITE;
+	if (args->bitmask)
 		encode_getfattr(xdr, args->bitmask, &hdr);
 	encode_nops(&hdr);
 }
@@ -5694,6 +5695,7 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
 	status = decode_write(xdr, res);
 	if (status)
 		goto out;
+	if (res->fattr)
 		decode_getfattr(xdr, res->fattr, res->server,
 				!RPC_IS_ASYNC(rqstp->rq_task));
 	if (!status)