From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
Subject: Re: [PATCH net-next v3 03/13] sock: add MSG_ZEROCOPY
Date: Thu, 22 Jun 2017 13:06:21 -0400 (EDT)
Message-ID: <20170622.130621.2195651628293833337.davem@davemloft.net>
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From: Willem de Bruijn <willemdebruijn.kernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date: Wed, 21 Jun 2017 17:18:06 -0400

> +struct ubuf_info *sock_zerocopy_alloc(struct sock *sk, size_t size)
> +{
> +	struct sk_buff *skb;
> +	struct ubuf_info *uarg;

Reverse christmas tree.

> +void sock_zerocopy_callback(struct ubuf_info *uarg, bool success)
> +{
> +	struct sock_exterr_skb *serr;
> +	struct sk_buff *skb = skb_from_uarg(uarg);
> +	struct sock *sk = skb->sk;
> +	u16 id = uarg->desc;

Likewise.