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From: Jens Axboe <[email protected]>
To: Hao Xu <[email protected]>
Cc: [email protected], Pavel Begunkov <[email protected]>,
	Joseph Qi <[email protected]>
Subject: Re: [PATCH] io_uring: check file_slot early when accept use fix_file mode
Date: Tue, 7 Sep 2021 09:24:48 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 9/7/21 9:16 AM, Hao Xu wrote:
> check file_slot early in io_accept_prep() to avoid wasted effort in
> failure cases.

It's generally better to just let the failure cases deal with it instead
of having checks in multiple places. This is a failure path, so we don't
care about making it fail early. Optimizations should be for the hot path,
which is not a malformed sqe.

-- 
Jens Axboe


  reply	other threads:[~2021-09-07 15:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 15:16 [PATCH] io_uring: check file_slot early when accept use fix_file mode Hao Xu
2021-09-07 15:24 ` Jens Axboe [this message]
2021-09-07 15:32   ` Hao Xu
2021-09-07 15:37     ` Jens Axboe
2021-09-07 15:42       ` Hao Xu
2021-09-07 15:44         ` Jens Axboe

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