diff options
| author | Li Nan <linan122@huawei.com> | 2023-01-17 08:08:06 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-29 23:18:34 +0100 |
| commit | b3260329658483d8e46f0298bfa4ce0b772a6555 (patch) | |
| tree | f498fd51e32c3514f2ed05787b1ab9fe7cb3e692 /block/blk-iocost.c | |
| parent | blk-iocost: fix divide by 0 error in calc_lcoefs() (diff) | |
| download | linux-b3260329658483d8e46f0298bfa4ce0b772a6555.tar.xz linux-b3260329658483d8e46f0298bfa4ce0b772a6555.zip | |
blk-iocost: change div64_u64 to DIV64_U64_ROUND_UP in ioc_refresh_params()
vrate_min is calculated by DIV64_U64_ROUND_UP, but vrate_max is calculated
by div64_u64. Vrate_min may be 1 greater than vrate_max if the input
values min and max of cost.qos are equal.
Signed-off-by: Li Nan <linan122@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230117070806.3857142-6-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index a4f195685c3c..9694394ed883 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -933,8 +933,8 @@ static bool ioc_refresh_params(struct ioc *ioc, bool force) ioc->vrate_min = DIV64_U64_ROUND_UP((u64)ioc->params.qos[QOS_MIN] * VTIME_PER_USEC, MILLION); - ioc->vrate_max = div64_u64((u64)ioc->params.qos[QOS_MAX] * - VTIME_PER_USEC, MILLION); + ioc->vrate_max = DIV64_U64_ROUND_UP((u64)ioc->params.qos[QOS_MAX] * + VTIME_PER_USEC, MILLION); return true; } |