From: Pavel Begunkov <asml.silence@gmail.com>
To: io-uring@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH] io_uring: fix CQ waiting timeout handling
Date: Thu, 5 Jan 2023 10:48:52 +0000 [thread overview]
Message-ID: <35a01aaa-cc37-6359-67fe-0fcde546947d@gmail.com> (raw)
In-Reply-To: <609a38a65f91643f9f9706b983a8aaa0e3001d77.1672915374.git.asml.silence@gmail.com>
On 1/5/23 10:44, Pavel Begunkov wrote:
> Jiffy to ktime CQ waiting conversion broke how we treat timeouts, in
> particular we rearm it anew every time we get into
> io_cqring_wait_schedule() without adjusting the timeout. Waiting for 2
> CQEs and getting a task_work in the middle may double the timeout value,
> or even worse in some cases task may wait indefinitely.
Wrong base, will send v2
--
Pavel Begunkov
prev parent reply other threads:[~2023-01-05 10:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-05 10:44 [PATCH] io_uring: fix CQ waiting timeout handling Pavel Begunkov
2023-01-05 10:48 ` Pavel Begunkov [this message]
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