Re: [PATCH v1 1/1] [io_uring] require RWF_HIPRI for iopoll reads and writes

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On 5/1/19 5:52 AM, Stefan Bühler wrote:
> This makes the mapping RWF_HIPRI <-> IOCB_HIPRI <-> iopoll more
> consistent; it also allows supporting iopoll operations without
> IORING_SETUP_IOPOLL in the future.

I don't want to make this change now. Additionally, it's never
going to be possible to support polled IO mixed with non-polled
IO on an io_uring instance, as that makes the wait part of IO
impossible to support without adding tracking of requests.

As we can never mix them, it doesn't make a lot of sense to
request RWF_HIPRI for polled IO.

-- 
Jens Axboe




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