Re: [PATCH v3 1/1] io_uring: optimise sqe-to-req flags translation

[Pavel Begunkov]

On 18/01/2020 23:46, Jens Axboe wrote:
> On 1/18/20 10:22 AM, Pavel Begunkov wrote:
>> For each IOSQE_* flag there is a corresponding REQ_F_* flag. And there
>> is a repetitive pattern of their translation:
>> e.g. if (sqe->flags & SQE_FLAG*) req->flags |= REQ_F_FLAG*
>>
>> Use same numeric values/bits for them and copy instead of manual
>> handling.

I wonder, why this isn't a common practice around the kernel. E.g. I'm looking
at iocb_flags() and kiocb_set_rw_flags(), and their one by one flags copying is
just wasteful.

> 
> Thanks, applied.
> 

-- 
Pavel Begunkov

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