netdev - Re: [PATCH v2 net-next 1/2] net: prepare (struct ubuf

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Message-ID: <CAF=yD-KfLKxJPbo3C1NPv0TXOR20m0LGbjmc208S2E-gPEwz=w@mail.gmail.com>
Date:   Thu, 31 Aug 2017 19:54:39 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Willem de Bruijn <willemb@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH v2 net-next 1/2] net: prepare (struct ubuf_info)->refcnt conversion

On Thu, Aug 31, 2017 at 7:48 PM, Eric Dumazet <edumazet@...gle.com> wrote:
> In order to convert this atomic_t refcnt to refcount_t,
> we need to init the refcount to one to not trigger
> a 0 -> 1 transition.
>
> This also removes one atomic operation in fast path.
>
> v2: removed dead code in sock_zerocopy_put_abort()
> as suggested by Willem.
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>