Date: Tue, 24 Mar 2009 16:36:16 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Robert Schwebel <r.schwebel@pengutronix.de>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Frank Blaschka <blaschka@linux.vnet.ibm.com>,
       "David S. Miller" <davem@davemloft.net>,
       Thomas Gleixner <tglx@linutronix.de>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       kernel@pengutronix.de
Subject: Re: Revert "gro: Fix legacy path napi_complete crash", (was: Re:
	Linux 2.6.29)
Message-ID: <20090324153616.GA31143@elte.hu>
References: <alpine.LFD.2.00.0903231617550.3032@localhost.localdomain> <20090324130202.GA32469@elte.hu> <20090324143303.GP5367@pengutronix.de> <20090324143942.GA20462@elte.hu> <20090324150928.GB30224@gondor.apana.org.au>
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* Herbert Xu <herbert@gondor.apana.org.au> wrote:

> On Tue, Mar 24, 2009 at 03:39:42PM +0100, Ingo Molnar wrote:
> >
> > Subject: [PATCH] net: Fix netpoll lockup in legacy receive path
> 
> Actually, this patch is still racy.  If some interrupt comes in
> and we suddenly get the maximum amount of backlog we can still
> hang when we call __napi_complete incorrectly.  It's unlikely
> but we certainly shouldn't allow that.  Here's a better version.
> 
> net: Fix netpoll lockup in legacy receive path

ok - i'm testing with this now.

	Ingo
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