netdev - Re: [PATCH net-next] bonding: remove locking from bond_set_rx

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Message-Id: <20130805.122312.1354065558935534703.davem@davemloft.net>
Date:	Mon, 05 Aug 2013 12:23:12 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	vfalico@...hat.com
Cc:	netdev@...r.kernel.org, fubar@...ibm.com, andy@...yhouse.net,
	nikolay@...hat.com
Subject: Re: [PATCH net-next] bonding: remove locking from
 bond_set_rx_mode()

From: Veaceslav Falico <vfalico@...hat.com>
Date: Mon,  5 Aug 2013 14:56:06 +0200

> We're already protected by RTNL lock, so nothing can happen to bond/its
> slaves, and thus the locking is useless here (both bond->lock and
> bond->curr_active_slave).
> 
> Also, add ASSERT_RTNL() both to bond_set_rx_mode() and bond_hw_addr_swap()
> to catch possible uses of it without RTNL locking.
> 
> This patch also saves us from a lockdep false-positive in
> bond_set_rx_mode() vs bond_hw_addr_swap().
> 
> CC: Jay Vosburgh <fubar@...ibm.com>
> CC: Andy Gospodarek <andy@...yhouse.net>
> CC: Nikolay Aleksandrov <nikolay@...hat.com>
> Signed-off-by: Veaceslav Falico <vfalico@...hat.com>

Applied.
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