+ /*
+ * Scramble by default, but not if zero_buffer is true and has been
+ * set. But if scramble_buffers has been set, always scramble.
+ */
+ if (o->scramble_buffers && ((!o->zero_buffers &&
+ fio_option_is_set(o, zero_buffers)) ||
+ fio_option_is_set(o, scramble_buffers)))