From: "Drew DeVault" <sir@cmpwn.com>
To: "Pavel Begunkov" <asml.silence@gmail.com>, <io-uring@vger.kernel.org>
Subject: Re: Polling on an io_uring file descriptor
Date: Wed, 20 Oct 2021 13:44:19 +0200 [thread overview]
Message-ID: <CF47IHLKHBS7.27LZVJ5PQL4YU@taiga> (raw)
In-Reply-To: <70423334-a653-51e3-461c-7d09e7091714@gmail.com>
On Wed Oct 20, 2021 at 12:15 PM CEST, Pavel Begunkov wrote:
> Not a canonical way, but both should work (POLLIN for CQEs).
> Do you have a simple test case for us to reproduce?
Hm, no, I cannot. I must have faced another bug, I was not able to
produce a minimal test case and my attempt to reproduce my earlier bug
in a larger test case was not succesful.
One issue which remains is that attempting to use REGISTER_FILES on
io_uring A with io_uring B's file descriptor returns EBADF. I saw a
comment in the kernel source explaining this, but it's a bit contrived
and the error case is not documented.
next prev parent reply other threads:[~2021-10-20 11:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-20 9:21 Polling on an io_uring file descriptor Drew DeVault
2021-10-20 10:02 ` Drew DeVault
2021-10-20 10:15 ` Pavel Begunkov
2021-10-20 11:44 ` Drew DeVault [this message]
2021-10-20 11:58 ` Pavel Begunkov
2021-10-20 12:00 ` Drew DeVault
2021-10-22 7:59 ` Drew DeVault
2021-10-22 9:49 ` Pavel Begunkov
2021-10-22 10:26 ` Drew DeVault
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