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block/bfq_wf2q: correct weight to ioprio

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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 <[email protected]>
Acked-by: Paolo Valente <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Yahu Gao
2022-02-16 20:09:14 -07:00
committed by Jens Axboe
parent 8f5fea65b0
commit bcd2be7632
1 changed files with 1 additions and 1 deletions
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block/bfq-wf2q.c
+1 -1
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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)