On 2020/7/20 下午11:49, Jens Axboe wrote: > On 7/20/20 2:33 AM, Jiufei Xue wrote: >> Signed-off-by: Jiufei Xue <jiufei.xue@xxxxxxxxxxxxxxxxx> >> --- >> block/Kconfig | 1 - >> 1 file changed, 1 deletion(-) >> >> diff --git a/block/Kconfig b/block/Kconfig >> index 9357d73..d52c9bc 100644 >> --- a/block/Kconfig >> +++ b/block/Kconfig >> @@ -146,7 +146,6 @@ config BLK_CGROUP_IOLATENCY >> config BLK_CGROUP_IOCOST >> bool "Enable support for cost model based cgroup IO controller" >> depends on BLK_CGROUP=y >> - select BLK_RQ_IO_DATA_LEN >> select BLK_RQ_ALLOC_TIME >> help >> Enabling this option enables the .weight interface for cost > > What's the difference between v1 and v2? A commit message would > also be nice... > Sorry for the confusion. I have misspelled *unused* in patch v1. Thanks, Jiufei