Commit bcd2be76 authored by Yahu Gao's avatar Yahu Gao Committed by Jens Axboe
Browse files

block/bfq_wf2q: correct weight to ioprio 



The return value is ioprio * BFQ_WEIGHT_CONVERSION_COEFF or 0.
What we want is ioprio or 0.
Correct this by changing the calculation.

Signed-off-by: default avatarYahu Gao <gaoyahu19@gmail.com>
Acked-by: default avatarPaolo Valente <paolo.valente@linaro.org>
Link: https://lore.kernel.org/r/20220107065859.25689-1-gaoyahu19@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 8f5fea65

block/bfq-wf2q.c

+1 −1
Original line number Diff line number Diff line
@@ -519,7 +519,7 @@ unsigned short bfq_ioprio_to_weight(int ioprio) 
static unsigned short bfq_weight_to_ioprio(int weight)

{

	return max_t(int, 0,

		     IOPRIO_NR_LEVELS * BFQ_WEIGHT_CONVERSION_COEFF - weight);

		     IOPRIO_NR_LEVELS - weight / BFQ_WEIGHT_CONVERSION_COEFF);

}



static void bfq_get_entity(struct bfq_entity *entity)