netdev - Re: [PATCH net-next] mlx4: Better use of order-0 pages in RX path

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Message-ID: <CANn89iL3ODh0xf=+P0gSYN-mGwACeeCO+OwtJzK5JEtOtMdPuw@mail.gmail.com>
Date:   Mon, 13 Mar 2017 16:28:04 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Tariq Toukan <tariqt@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Alexander Duyck <alexander.duyck@...il.com>
Subject: Re: [PATCH net-next] mlx4: Better use of order-0 pages in RX path

On Mon, Mar 13, 2017 at 4:21 PM, Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> is it once in the beginning only? If so then why that
> 'if (!ring->page_cache.index)' check is done for every packet?



You did not really read the patch, otherwise you would not ask these questions.

Test it, and if you find a regression, shout loudly.