netdev - Re: [PATCH net-next-2.6] net: Introduce dev_get_by_index

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Message-Id: <20091029.014320.29385522.davem@davemloft.net>
Date:	Thu, 29 Oct 2009 01:43:20 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] net: Introduce dev_get_by_index_rcu()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 20 Oct 2009 07:18:49 +0200

> [PATCH net-next-2.6] net: Introduce dev_get_by_index_rcu()
> 
> Some workloads hit dev_base_lock rwlock pretty hard.
> We can use RCU lookups to avoid touching this rwlock.
> 
> netdevices are already freed after a RCU grace period, so this patch
> adds no penalty at device dismantle time.
> 
> dev_ifname() converted to dev_get_by_index_rcu()
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied to net-next-2.6, thanks!
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