Re: SQPOLL question

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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




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