On 06/27/2017 09:17 AM, Christoph Hellwig wrote: > On Mon, Jun 26, 2017 at 09:37:54AM -0600, Jens Axboe wrote: >> Useful to verify that things are working the way they should. >> Reading the file will return number of kb written with each >> write hint. Writing the file will reset the statistics. No care >> is taken to ensure that we don't race on updates. >> >> Drivers will write to q->write_hints[] if they handle a given >> write hint. > > How about moving the accounting itself to blk-mq as well? Just noticed > that it's completely generic while looking over the nvme patch. I didn't want to do it, unless the driver is using streams. -- Jens Axboe