# Re: \[PATCH 14/26\] md: convert to blk\_alloc\_disk/blk\_cleanup\_disk

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2021-05-24 07:26:47 
- List: linux-bcache
- Page: https://ratatoskr.run/linux-bcache/2021/05/6402902
- Thread: https://ratatoskr.run/linux-block/2021/05/6402806/t.md

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