On Sun, May 23, 2021 at 10:12:49AM +0200, Hannes Reinecke wrote:

quoted

+	blk_set_stacking_limits(&mddev->queue->limits);
  	blk_queue_write_cache(mddev->queue, true, true);
  	/* Allow extended partitions.  This makes the
  	 * 'mdp' device redundant, but we can't really

Wouldn't it make sense to introduce a helper 'blk_queue_from_disk()' or 
somesuch to avoid having to keep an explicit 'queue' pointer?

My rought plan is that a few series from now bio based drivers will
never directly deal with the request_queue at all.

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