netdev - Re: [PATCH V2 01/12] bridge: Add vlan filtering infrastructure

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Message-ID: <1355865231.9380.119.camel@edumazet-glaptop>
Date:	Tue, 18 Dec 2012 13:13:51 -0800
From:	Eric Dumazet <erdnetdev@...il.com>
To:	Vlad Yasevich <vyasevic@...hat.com>
Cc:	netdev@...r.kernel.org, shemminger@...tta.com, davem@...emloft.net,
	or.gerlitz@...il.com, jhs@...atatu.com, mst@...hat.com
Subject: Re: [PATCH V2 01/12] bridge: Add vlan filtering infrastructure

On Tue, 2012-12-18 at 14:00 -0500, Vlad Yasevich wrote:

> +static void br_vlan_destroy(struct net_bridge_vlan *vlan)
> +{
> +	if (!bitmap_empty(vlan->port_bitmap, PORT_BITMAP_LEN)) {
> +		pr_err("Attempt to delete a VLAN %d from the bridge with "
> +		       "non-empty port bitmap (%p)\n", vlan->vid, vlan);
> +		BUG();
> +	}
> +
> +	hlist_del_rcu(&vlan->hlist);
> +	synchronize_net();
> +	kfree_rcu(vlan, rcu);
> +}

Not clear why you both use synchronize_net() and kfree_rcu()


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