On Thu, Nov 26, 2020 at 05:48:33PM +0800, Jeffle Xu wrote: > The inflight of partition 0 doesn't include inflight IOs to all > sub-partitions, since currently mq calculates inflight of specific > partition by simply camparing the value of the partition pointer. > > Thus the following case is possible: > > $ cat /sys/block/vda/inflight > ?? ?? ?? ??0 ?? ?? ?? ??0 > $ cat /sys/block/vda/vda1/inflight > ?? ?? ?? ??0 ?? ?? ??128 > > Partition 0 should be specially handled since it represents the whole > disk. I'm not sure and can see arguments for either side. In doubt we should stick to historic behavior, can you check what old kernels (especially before blk-mq) did?
