netdev - Re: [PATCH net-next v3 4/7] vxlan: improve vxlan route lookup checks.

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Message-ID: <CAOrHB_C3hvmZOL+P4kjw6i1+z09oRO8QQaZBjwxks2XqkgN2iw@mail.gmail.com>
Date:   Mon, 21 Nov 2016 12:34:03 -0800
From:   Pravin Shelar <pshelar@....org>
To:     Jiri Benc <jbenc@...hat.com>
Cc:     David Laight <David.Laight@...lab.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v3 4/7] vxlan: improve vxlan route lookup checks.

On Thu, Nov 17, 2016 at 7:59 AM, Jiri Benc <jbenc@...hat.com> wrote:
> On Thu, 17 Nov 2016 10:17:01 +0000, David Laight wrote:
>> Worse than arbitrary, it adds 4 bytes of pad on 64bit systems.
>
> It does not, this is not a struct.
>
right.

After looking at the assembly code, it is clear that GCC and most of
modern compiler can reorder function variables for efficient storage.