netdev - Re: [PATCH v3 net] net: solve a NAPI race

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Message-ID: <20170227144455.174ab1e5@xeon-e3>
Date:   Mon, 27 Feb 2017 14:44:55 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 net] net: solve a NAPI race

On Mon, 27 Feb 2017 14:35:17 -0800
Eric Dumazet <eric.dumazet@...il.com> wrote:

> On Mon, 2017-02-27 at 14:14 -0800, Stephen Hemminger wrote:
> 
> > The original design (as Davem mentioned) was that IRQ's must be disabled
> > during device polling. If that was true, then the race above
> > would be impossible.  
> 
> I would love to see an alternative patch.

Turn off busy poll? 
The poll stuff runs risk of breaking more things.