Re: [PATCH 01/20] block, blk_filter: enable block device filters

[Sergei Shtepa]

On 7/14/22 07:12, Christoph Hellwig wrote:
> To:
> Sergei Shtepa <sergei.shtepa@xxxxxxxxx>
> CC:
> Christoph Hellwig <hch@xxxxxxxxxxxxx>, "axboe@xxxxxxxxx" <axboe@xxxxxxxxx>, "linux-block@xxxxxxxxxxxxxxx" <linux-block@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>
> 
> 
> On Wed, Jul 13, 2022 at 03:47:23PM +0200, Sergei Shtepa wrote:
>>>> 2. Can the filter sleep or postpone bio processing to the worker thread?
>>> I think all of te above is fine, just for normal submit_bio based
>>> drivers.
>>  
>> Good. But I'm starting to think that for request-based block devices,
>> filtering should be different. I need to check it out.
> As long as you filter in the submit_bio stack you handle both submit_bio
> and request based (blk-mq) drivers.  So I don't think we hould need
> to handle them any differently.
> 
>> I have a lot of work to do to improve the patch.
> If you have any questions or want to get feedback on iterations not
> ready to post feel free to ask me offlist.
> 
Thank you very much.
When a worthy question matures in me, I will take advantage of your offer.