linux-kernel - Re: [PATCH 2/3] netpoll: rework skb transmit queue

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Date:	Fri, 20 Oct 2006 23:16:03 +0200
From:	Andi Kleen <ak@...e.de>
To:	David Miller <davem@...emloft.net>
Cc:	shemminger@...l.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] netpoll: rework skb transmit queue

On Friday 20 October 2006 23:08, David Miller wrote:
> From: Andi Kleen <ak@...e.de>
> Date: Fri, 20 Oct 2006 23:01:29 +0200
> 
> > netpoll always played a little fast'n'lose with various locking rules.
> 
> The current code is fine, it never reenters ->poll, because it
> maintains a "->poll_owner" which it checks in netpoll_send_skb()
> before trying to call back into ->poll.

I was more thinking of reentry of the interrupt handler in 
the driver etc. A lot of them also do printk, but that is fortunately
caught higher level.

-Andi
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