Re: [PATCH 8/9] io_uring: utilize the io_batch infrastructure for more efficient polled IO

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On 10/15/21 10:29 PM, Christoph Hellwig wrote:
> On Thu, Oct 14, 2021 at 12:14:19PM -0600, Jens Axboe wrote:
>>> Either way this should be commented as right now it looks pretty
>>> arbitrary.
>>
>> I got rid of this and added a dev_id kind of cookie that gets matched
>> on batched addition.
> 
> Thinking about this a bit more.  I don't think we need to differenciate
> devices, just complete handlers.  That is everything using the same
> ->complete_batch handler could go onto the same list.  Which means
> different nvme devices can be polled together.  So I think we can
> just check the complete/complete_batch handler and be done with it.
> The big benefit besides saving a field is that this is pretty much
> self-explaining.

Good idea, cleaner than a dev_id cookie too. I'll be sending out the
revised series soonish, but I incorporated that change.

-- 
Jens Axboe




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