netdev - Re: [PATCH] RDMA/addr: Use appropriate locking with for_each

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Message-ID: <20091119214047.1a966c79@nehalam>
Date:	Thu, 19 Nov 2009 21:40:47 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Sean Hefty <sean.hefty@...el.com>,
	"'Roland Dreier'" <rdreier@...co.com>,
	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Roland Dreier <rolandd@...co.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma <linux-rdma@...r.kernel.org>
Subject: Re: [PATCH] RDMA/addr: Use appropriate locking with
 for_each_netdev()

On Fri, 20 Nov 2009 06:28:00 +0100
Eric Dumazet <eric.dumazet@...il.com> wrote:

> +		read_lock(&dev_base_lock);
>  		for_each_netdev(&init_net, dev) {
>  			if (ipv6_chk_addr(&init_net,
>  					  &((struct sockaddr_in6 *) addr)->sin6_addr,
> @@ -139,6 +140,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
>  				break;
>  			}
>  		}
> +		read_unlock(&dev_base_lock);

what about for_each_netdev_rcu() here instead...



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