Hi Eric,
On Mon, Nov 30, 2015, at 04:37, Eric Dumazet wrote:
> - opt = xchg(&np->opt, NULL);
> - if (opt)
> - sock_kfree_s(sk, opt, opt->tot_len);
> + opt = xchg((__force struct ipv6_txoptions
> **)&np->opt,
> + NULL);
> + if (opt) {
> + atomic_sub(opt->tot_len,
> &sk->sk_omem_alloc);
> + txopt_put(opt);
> + }
> pktopt = xchg(&np->pktoptions, NULL);
> kfree_skb(pktopt);
Is here something special going on (because of the xchg). I don't see
why you cannot simply use a RCU_INIT_POINTER?
Thanks,
Hannes
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