u64 delta_from_first;
/*
* Current estimate of the device peak rate, measured in
- * [BFQ_RATE_SHIFT * sectors/usec]. The left-shift by
+ * [(sectors/usec) / 2^BFQ_RATE_SHIFT]. The left-shift by
* BFQ_RATE_SHIFT is performed to increase precision in
* fixed-point calculations.
*/