From: Andi Kleen <andi@firstfloor•org>
To: Andy Gospodarek <andy@greyhouse•net>
Cc: netdev@vger•kernel.org, amwang@redhat•com, fubar@us•ibm.com
Subject: Re: [PATCH 2.6.35] bonding: prevent netpoll over bonded interfaces
Date: Sat, 26 Jun 2010 00:31:50 +0200 [thread overview]
Message-ID: <87y6e2d9rd.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20100625195044.GQ7497@gospo.rdu.redhat.com> (Andy Gospodarek's message of "Fri, 25 Jun 2010 15:50:44 -0400")
Andy Gospodarek <andy@greyhouse•net> writes:
> Support for netpoll over bonded interfaces was added here:
>
> commit f6dc31a85cd46a959bdd987adad14c3b645e03c1
> Author: WANG Cong <amwang@redhat•com>
> Date: Thu May 6 00:48:51 2010 -0700
>
> bonding: make bonding support netpoll
>
> but it is bad enough that we should probably just disable netpoll over
> bonding until some of the locking logic in the bonding driver is changed
> or converted completely to RCU. Simple actions like changing the active
> slave in active-backup mode will hang the box if a high enough printk
> debugging level is enabled.
Normally you just need to prevent the printks when called from poll
context. That's not rocket science.
-Andi
--
ak@linux•intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-06-25 22:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-25 19:50 [PATCH 2.6.35] bonding: prevent netpoll over bonded interfaces Andy Gospodarek
2010-06-25 22:31 ` Andi Kleen [this message]
2010-06-25 22:52 ` Jay Vosburgh
2010-06-29 6:54 ` David Miller
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