netdev - Re: [PATCH v18 net-next 1/1] hv_sock: introduce Hyper-V Sockets

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Date:	Mon, 25 Jul 2016 17:37:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	decui@...rosoft.com
Cc:	gregkh@...uxfoundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	olaf@...fle.de, apw@...onical.com, jasowang@...hat.com,
	vkuznets@...hat.com, cavery@...hat.com, kys@...rosoft.com,
	joe@...ches.com, rolf.neugebauer@...ker.com, mkubecek@...e.cz,
	haiyangz@...rosoft.com, dave.scott@...ker.com
Subject: Re: [PATCH v18 net-next 1/1] hv_sock: introduce Hyper-V Sockets

From: Dexuan Cui <decui@...rosoft.com>
Date: Sat, 23 Jul 2016 01:35:51 +0000

> +static struct sock *hvsock_create(struct net *net, struct socket *sock,
> +				  gfp_t priority, unsigned short type)
> +{
> +	struct hvsock_sock *hvsk;
> +	struct sock *sk;
> +
> +	sk = sk_alloc(net, AF_HYPERV, priority, &hvsock_proto, 0);
> +	if (!sk)
> +		return NULL;
 ...
> +	/* Looks stream-based socket doesn't need this. */
> +	sk->sk_backlog_rcv = NULL;
> +
> +	sk->sk_state = 0;
> +	sock_reset_flag(sk, SOCK_DONE);

All of these are unnecessary initializations, since sk_alloc() zeroes
out the 'sk' object for you.