netdev - Re: [PATCH] bpf: replace usage of found with dedicated list iterator variable

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Date:   Mon, 28 Mar 2022 08:30:19 -0700
From:   Yonghong Song <yhs@...com>
To:     Jakob Koschel <jakobkoschel@...il.com>,
        Alexei Starovoitov <ast@...nel.org>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mike Rapoport <rppt@...nel.org>,
        Brian Johannesmeyer <bjohannesmeyer@...il.com>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>
Subject: Re: [PATCH] bpf: replace usage of found with dedicated list iterator
 variable



On 3/27/22 2:50 PM, Jakob Koschel wrote:
> To move the list iterator variable into the list_for_each_entry_*()
> macro in the future it should be avoided to use the list iterator
> variable after the loop body.
> 
> To *never* use the list iterator variable after the loop it was
> concluded to use a separate iterator variable instead of a
> found boolean [1].
> 
> This removes the need to use a found variable (supported & existed)
> and simply checking if the variable was set, can determine if the
> break/goto was hit.
> 
> Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/

Since in the commit message, we have a reference '[1]'. Maybe the above 
should be something like below?

   [1] 
https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/

> Signed-off-by: Jakob Koschel <jakobkoschel@...il.com>

Acked-by: Yonghong Song <yhs@...com>