max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
td->orig_buffer_size = (unsigned long long) max_bs * (unsigned long long) max_units;
max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
td->orig_buffer_size = (unsigned long long) max_bs * (unsigned long long) max_units;