linux-kernel - Re: [PATCH bpf-next] bpf: hide the unused 'off' variable

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Message-ID: <4a060ed5-f147-6778-caa2-7866b1f04479@gmail.com>
Date:   Tue, 29 May 2018 08:53:47 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Arnd Bergmann <arnd@...db.de>, YueHaibing <yuehaibing@...wei.com>
Cc:     David Miller <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: hide the unused 'off' variable

On 05/29/2018 03:35 AM, Arnd Bergmann wrote:
> On Tue, May 29, 2018 at 4:40 AM, YueHaibing <yuehaibing@...wei.com> wrote:
>> The local variable is only used while CONFIG_IPV6 enabled
>>
>> net/core/filter.c: In function ‘sk_msg_convert_ctx_access’:
>> net/core/filter.c:6489:6: warning: unused variable ‘off’ [-Wunused-variable]
>>   int off;
>>       ^
>> This puts it into #ifdef.
>>
>> Fixes: 303def35f64e ("bpf: allow sk_msg programs to read sock fields")
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> 
> I was about to send the same patch and found you had already sent one.
> 
> Acked-by: Arnd Bergmann <arnd@...db.de>
> 

Thanks! I'm curious why kbuild bot didn't catch this. Will
try to dig into that in a bit.

Acked-by: John Fastabend <john.fastabend@...il.com>