linux-kernel - Re: [PATCH tools/io_uring] tools/io_uring: correctly set "ret" for sq

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Message-ID: <084ea730-a3a1-4dff-ecb5-d45a0af82e97@linux.alibaba.com>
Date:   Fri, 24 Feb 2023 10:25:38 +0800
From:   Ziyang Zhang <ZiyangZhang@...ux.alibaba.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        asml.silence@...il.com
Subject: Re: [PATCH tools/io_uring] tools/io_uring: correctly set "ret" for
 sq_poll case

On 2023/2/23 11:46, Jens Axboe wrote:
> On 2/21/23 12:37?AM, Ziyang Zhang wrote:
>> For sq_poll case, "ret" is not initialized or cleared/set. In this way,
>> output of this test program is incorrect and we can not even stop this
>> program by pressing CTRL-C.
>>
>> Reset "ret" to zero in each submission/completion round, and assign
>> "ret" to "this_reap".
> 
> Can you check if this issue also exists in the fio copy of this, which
> is t/io_uring.c in:
> 
> git://git.kernel.dk/fio
> 
> The copy in the kernel is pretty outdated at this point, and should
> probably get removed. But if the bug is in the above main version, then
> we should fix it there and then ponder if we want to remove the one in
> the kernel or just get it updated to match the upstream version.
> 

Hi Jens,

I have checked t/io_uring.c and the code is correct with sq_poll.

Regards,
Zhang