Re: mmotm 2021-04-11-20-47 uploaded (fs/io_uring.c)

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On 4/12/21 5:39 AM, Jens Axboe wrote:
> On 4/12/21 1:21 AM, Randy Dunlap wrote:
>> On 4/11/21 8:48 PM, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
>>> The mm-of-the-moment snapshot 2021-04-11-20-47 has been uploaded to
>>>
>>>    https://www.ozlabs.org/~akpm/mmotm/
>>>
>>> mmotm-readme.txt says
>>>
>>> README for mm-of-the-moment:
>>>
>>> https://www.ozlabs.org/~akpm/mmotm/
>>>
>>> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
>>> more than once a week.
>>>
>>> You will need quilt to apply these patches to the latest Linus release (5.x
>>> or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
>>> https://ozlabs.org/~akpm/mmotm/series
>>>
>>> The file broken-out.tar.gz contains two datestamp files: .DATE and
>>> .DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
>>> followed by the base kernel version against which this patch series is to
>>> be applied.
>>>
>>> This tree is partially included in linux-next.  To see which patches are
>>> included in linux-next, consult the `series' file.  Only the patches
>>> within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
>>> linux-next.
>>
>> on i386:
>> # CONFIG_BLOCK is not set
>>
>> ../fs/io_uring.c: In function ‘kiocb_done’:
>> ../fs/io_uring.c:2766:7: error: implicit declaration of function ‘io_resubmit_prep’; did you mean ‘io_put_req’? [-Werror=implicit-function-declaration]
>>    if (io_resubmit_prep(req)) {
> 
> I'll apply the below to take care of that.
> 

Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested


Thanks.

> 
> diff --git a/fs/io_uring.c b/fs/io_uring.c
> index 3a837d2b8331..aa29918944f6 100644
> --- a/fs/io_uring.c
> +++ b/fs/io_uring.c
> @@ -2464,6 +2464,10 @@ static bool io_rw_should_reissue(struct io_kiocb *req)
>  	return true;
>  }
>  #else
> +static bool io_resubmit_prep(struct io_kiocb *req)
> +{
> +	return false;
> +}
>  static bool io_rw_should_reissue(struct io_kiocb *req)
>  {
>  	return false;
> @@ -2504,14 +2508,8 @@ static void io_complete_rw_iopoll(struct kiocb *kiocb, long res, long res2)
>  	if (kiocb->ki_flags & IOCB_WRITE)
>  		kiocb_end_write(req);
>  	if (unlikely(res != req->result)) {
> -		bool fail = true;
> -
> -#ifdef CONFIG_BLOCK
> -		if (res == -EAGAIN && io_rw_should_reissue(req) &&
> -		    io_resubmit_prep(req))
> -			fail = false;
> -#endif
> -		if (fail) {
> +		if (!(res == -EAGAIN && io_rw_should_reissue(req) &&
> +		    io_resubmit_prep(req))) {
>  			req_set_fail_links(req);
>  			req->flags |= REQ_F_DONT_REISSUE;
>  		}
> 


-- 
~Randy




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