Re: [Regression x2, 3.13-git] virtio block mq hang, iostat busted onvirtio devices

[Christoph Hellwig]

On Tue, Nov 19, 2013 at 09:05:09AM -0700, Jens Axboe wrote:
> I have queued up the below.

I don't think that will work.  We only set QUEUE_FLAG_IO_STAT in
blk_init_allocated_queue, which doesn't get called from
blk_mq_init_queue.  That being said I really don't understand why we
need to have the QUEUE_FLAG_IO_STAT flag at all.

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