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Date:   Thu, 17 Jan 2019 16:56:53 +0100
From:   Daniel Borkmann <>
To:     Martin Lau <>, Mathieu Malaterre <>
Cc:     Alexei Starovoitov <>,
        "" <>,
        "" <>
Subject: Re: [PATCH] bpf: Make function btf_name_offset_valid static

On 01/16/2019 10:16 PM, Martin Lau wrote:
> On Wed, Jan 16, 2019 at 08:29:40PM +0100, Mathieu Malaterre wrote:
>> Initially in commit 69b693f0aefa ("bpf: btf: Introduce BPF Type Format
>> (BTF)") the function 'btf_name_offset_valid' was introduced as static
>> function it was later on changed to a non-static one, and then finally
>> in commit c454a46b5efd ("bpf: Add bpf_line_info support") the function
>> prototype was removed.
> Instead of c454a46b5efd, it was removed from btf.h in
> commit 23127b33ec80 ("bpf: Create a new btf_name_by_offset() for non type name use case")
>> Revert back to original implementation and make the function static.
>> Remove warning triggered with W=1:
>>   kernel/bpf/btf.c:470:6: warning: no previous prototype for 'btf_name_offset_valid' [-Wmissing-prototypes]
>> Signed-off-by: Mathieu Malaterre <>
> Fixes: 23127b33ec80 ("bpf: Create a new btf_name_by_offset() for non type name use case")
> Thanks for the fix!
> Other than the above,
> Acked-by: Martin KaFai Lau <>

Applied to bpf and fixed up commit reference. Thanks!

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