netdev - Re: [PATCH net-next 0/2] ipv6: addrlabel: avoid dirtying ip6addrlbl

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Message-ID: <20171009174417.gpfghoxctgksdzaz@kafai-mbp.dhcp.thefacebook.com>
Date:   Mon, 9 Oct 2017 10:44:17 -0700
From:   Martin KaFai Lau <kafai@...com>
To:     Eric Dumazet <edumazet@...gle.com>
CC:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: Re: [PATCH net-next 0/2] ipv6: addrlabel: avoid dirtying
 ip6addrlbl_entry

On Mon, Oct 09, 2017 at 04:52:23PM +0000, Eric Dumazet wrote:
> The refcount on ip6addrlbl_entry is only used to make sure ip6addrlbl_entry
> does not disappear while ip6addrlbl_get() is allocating an skb.
> 
> We can instead allocate skb first, then use RCU, so that we no longer need
> to refcount these structures.
Acked-by: Martin KaFai Lau <kafai@...com>