On Sat, May 16, 2020 at 03:19:55AM +0000, Luis Chamberlain wrote: > We use one blktrace per request_queue, that means one per the entire > disk. So we cannot run one blktrace on say /dev/vda and then /dev/vda1, > or just two calls on /dev/vda. > > We check for concurrent setup only at the very end of the blktrace setup though. Too long line in the changelog. Otherwise this looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>