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block/bfq_wf2q: correct weight to ioprio

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[ Upstream commit bcd2be7632 ]

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: Yahu Gao <gaoyahu19@gmail.com>
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Link: https://lore.kernel.org/r/20220107065859.25689-1-gaoyahu19@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yahu Gao 2022-01-07 14:58:59 +08:00 • committed by Justin Hammond
parent e7e08dc2e1
commit 0459017aa6
1 changed files with 1 additions and 1 deletions
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block/bfq-wf2q.c
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@ -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)