On Tue, 2011-08-09 at 06:47 +0800, Wu Fengguang wrote: > origin is where the control line crosses the X axis (in both the > global/bdi setpoint cases). Ah, that's normally called zero, root or or x-intercept: http://en.wikipedia.org/wiki/X-intercept -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html