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Message-ID: <4C04D98D.4020509@redhat.com>
Date: Tue, 01 Jun 2010 17:57:33 +0800
From: Cong Wang <amwang@...hat.com>
To: Flavio Leitner <fbl@...close.org>
CC: linux-kernel@...r.kernel.org, Matt Mackall <mpm@...enic.com>,
netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
Andy Gospodarek <gospo@...hat.com>,
Neil Horman <nhorman@...driver.com>,
Jeff Moyer <jmoyer@...hat.com>,
Stephen Hemminger <shemminger@...ux-foundation.org>,
bonding-devel@...ts.sourceforge.net,
Jay Vosburgh <fubar@...ibm.com>,
David Miller <davem@...emloft.net>
Subject: Re: [v5 Patch 1/3] netpoll: add generic support for bridge and bonding
devices
On 06/01/10 03:08, Flavio Leitner wrote:
> On Mon, May 31, 2010 at 01:56:52PM +0800, Cong Wang wrote:
>> Hi, Flavio,
>>
>> Please use the attached patch instead, try to see if it solves
>> all your problems.
>
> I tried and it hangs. No backtraces this time.
> The bond_change_active_slave() prints before NETDEV_BONDING_FAILOVER
> notification, so I think it won't work.
Ah, I thought the same.
>
> Please, correct if I'm wrong, but when a failover happens with your
> patch applied, the netconsole would be disabled forever even with
> another healthy slave, right?
>
Yes, this is an easy solution, because bonding has several modes,
it is complex to make netpoll work in different modes.
Would you like to test the following patch?
Thanks much!
View attachment "drivers-net-bonding-fix-activebackup-deadlock.diff" of type "text/x-patch" (592 bytes)
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