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Jens Axboe authored
If disk stats are enabled on the queue, a request needs to be marked with REQ_IO_STAT for accounting to be active on that request. This fixes an issue with virtio-blk not showing up in /proc/diskstats after the conversion to blk-mq. Add QUEUE_FLAG_MQ_DEFAULT, setting stats and same cpu-group completion on by default. Reported-by:
Dave Chinner <david@fromorbit.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
94eddfbe