nfserr_eof
if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0)
return nfsd4_encode_bool(xdr, readdir->common.err == nfserr_eof);
if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0)
cdp->err = nfserr_eof; /* will be cleared on successful read */
if (err == nfserr_eof || err == nfserr_toosmall)