On Sat, Jan 22, 2022 at 07:10:46PM +0800, Ming Lei wrote: > Passthrough request from userspace has one active block_device/disk > associated, so they can be accounted via rq->q->disk. For other > passthrough request, there may not be disk/block_device for the queue, > since either the queue has not a disk or the disk may be deleted > already. > > Add flag of BLK_MQ_REQ_USER_IO for only accounting passthrough request > from userspace. Please explain why you want to change this. Also this is missing I/O from /dev/sg, CDROM CDDA BPC reading, the tape drivers and bsg-lib.
