netdev - Re: [PATCH net-next v2 0/5] bonding: patchset for rcu use in bonding

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Date:	Sun, 27 Oct 2013 16:37:12 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	dingtianhong@...wei.com
Cc:	fubar@...ibm.com, andy@...yhouse.net, nikolay@...hat.com,
	vfalico@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 0/5] bonding: patchset for rcu use in
 bonding

From: Ding Tianhong <dingtianhong@...wei.com>
Date: Thu, 24 Oct 2013 11:08:35 +0800

> The slave list will add and del by bond_master_upper_dev_link() and bond_upper_dev_unlink(),
> which will call call_netdevice_notifiers(), even it is safe to call it in write bond lock now,
> but we can't sure that whether it is safe later, because other drivers may deal NETDEV_CHANGEUPPER
> in sleep way, so I didn't admit move the bond_upper_dev_unlink() in write bond lock.
> 
> now the bond_for_each_slave only protect by rtnl_lock(), maybe use bond_for_each_slave_rcu is a good
> way to protect slave list for bond, but as a system slow path, it is no need to transform bond_for_each_slave()
> to bond_for_each_slave_rcu() in slow path, so in the patchset, I will remove the unused read bond lock
> for monitor function, maybe it is a better way, I will wait to accept any relay for it.
> 
> Thanks for the Veaceslav Falico opinion.
> 
> v2: add and modify commit for patchset and patch, it will be the first step for the whole patchset.

Series applied, thanks.
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