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From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>
Subject: Re: [PATCH for-5.20] io_uring/net: fix overexcessive retries
Date: Fri, 26 Aug 2022 17:05:42 +0100	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <7ae9790cdf2f30cd381efda5b159ef95c88cf8eb.1661529830.git.asml.silence@gmail.com>

On 8/26/22 17:04, Pavel Begunkov wrote:
> Lenght parameter of io_sg_from_iter() can be smaller than the iterator's
> size, as it's with TCP, so when we set from->count at the end of the
> function we truncate the iterator forcing TCP to return preliminary with
> a short send. It affects zerocopy sends with large payload sizes and
> leads to retries and possible request failures.

sent a wrong one, please ignore

-- 
Pavel Begunkov

      reply	other threads:[~2022-08-26 16:06 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-26 16:04 [PATCH for-5.20] io_uring/net: fix overexcessive retries Pavel Begunkov
2022-08-26 16:05 ` Pavel Begunkov [this message]

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