From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>,
[email protected], [email protected]
Subject: Re: [PATCH v3 1/1] io_uring: optimise sqe-to-req flags translation
Date: Sun, 19 Jan 2020 10:46:54 +0300 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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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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next prev parent reply other threads:[~2020-01-19 7:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 22:22 [PATCH 1/2] io_uring: remove REQ_F_IO_DRAINED Pavel Begunkov
2020-01-17 22:22 ` [PATCH 2/2] io_uring: optimise sqe-to-req flags translation Pavel Begunkov
2020-01-17 22:41 ` [PATCH 0/2] optimise sqe-to-req flags Pavel Begunkov
2020-01-17 22:49 ` Jens Axboe
2020-01-17 23:14 ` Pavel Begunkov
2020-01-18 0:16 ` Jens Axboe
2020-01-18 10:24 ` [PATCH v2] io_uring: optimise sqe-to-req flags translation Pavel Begunkov
2020-01-18 16:34 ` Jens Axboe
2020-01-18 17:10 ` Pavel Begunkov
2020-01-18 17:22 ` [PATCH v3 1/1] " Pavel Begunkov
2020-01-18 20:46 ` Jens Axboe
2020-01-19 7:46 ` Pavel Begunkov [this message]
2020-01-19 17:36 ` Jens Axboe
2020-01-18 20:45 ` [PATCH v2] " Jens Axboe
2020-01-17 22:50 ` [PATCH 1/2] io_uring: remove REQ_F_IO_DRAINED Jens Axboe
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