From: Jens Axboe <axboe@kernel.dk>
To: Josef <josef.grieb@gmail.com>, io-uring@vger.kernel.org
Cc: norman@apache.org
Subject: Re: SQPOLL question
Date: Mon, 7 Sep 2020 06:49:13 -0600 [thread overview]
Message-ID: <93e9b2a2-b4b4-3cde-b5a7-64c8c504848d@kernel.dk> (raw)
In-Reply-To: <CAAss7+rgZ+9GsMq8rRN11FerWjMRosBgAv=Dokw+5QfBsUE4Uw@mail.gmail.com>
On 9/7/20 4:23 AM, Josef wrote:
>> On top of that, capabilities will also be reduced from root to
>> CAP_SYS_NICE instead, and sharing across rings for the SQPOLL thread
>> will be supported. So it'll be a lot more useful/flexible in general.
>
> oha that's nice, I'm pretty excited :)
>
> I'm just wondering if all op are supported when the SQPOLL flag is
> set? the accept op seems to fail with -EINVAL, when I enable SQPOLL
>
> to reproduce it:
> https://gist.github.com/1Jo1/accb91b737abb55d07487799739ad70a
> (just want to test a non blocking accept op in SQPOLL mode)
Yes, that is known, you cannot open/close descriptors with the
SQPOLL that requires fixed files, as that requires modifying the
file descriptor. 5.10 should not have any limitations.
--
Jens Axboe
next prev parent reply other threads:[~2020-09-07 12:50 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-06 15:44 SQPOLL question Josef
2020-09-06 15:49 ` Jens Axboe
2020-09-06 16:24 ` Josef
2020-09-06 16:25 ` Jens Axboe
2020-09-07 10:23 ` Josef
2020-09-07 12:49 ` Jens Axboe [this message]
2020-09-07 14:58 ` Josef
2020-09-07 15:51 ` Jens Axboe
2020-09-08 6:47 ` Josef
2020-09-08 14:36 ` Jens Axboe
2020-09-08 14:57 ` Jens Axboe
2020-09-08 17:42 ` Josef
2020-09-08 17:46 ` Jens Axboe
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