Sven Eckelmann wrote:
> From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> 
> The RCU callback neigh_node_free_rcu() just calls kfree(), so we can use
> kfree_rcu() instead of call_rcu().
> 
> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> Cc: Marek Lindner <lindner_marek@yahoo.de>
> Cc: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
> Acked-by: David S. Miller <davem@davemloft.net>
> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
> Signed-off-by: Sven Eckelmann <sven@narfation.org>

Linus applied it in ae179ae433bb4ef6b6179c5c1c7b6cc7dc01c670

Applied in 178a37e6f