Subject: Re: linux-next: build warning after merge of the block tree

From: Jens Axboe <[email-masked]>
Date: Tue, 3 Mar 2020 20:01:24 -0700

On 3/3/20 7:17 PM, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the block tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
> 
> fs/io_uring.c: In function 'io_close':
> fs/io_uring.c:3415:3: warning: ignoring return value of 'refcount_inc_not_zero', declared with attribute warn_unused_result [-Wunused-result]
>  3415 |   refcount_inc_not_zero(&req->refs);
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   62e0c6b73a2c ("io_uring: make submission ref putting consistent")

That should just be a refcount_inc() and also looks like it should happen
before the async queue. I'll fix it up.

-- 
Jens Axboe