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Date:	Fri, 8 Jun 2007 20:39:25 +1000
From:	Herbert Xu <>
To:	jamal <>
Cc:	Sridhar Samudrala <>,
	David Miller <>,,,,,,
Subject: Re: [PATCH] NET: Multiqueue network device support.

On Thu, Jun 07, 2007 at 09:35:36PM -0400, jamal wrote:
> On Thu, 2007-07-06 at 17:31 -0700, Sridhar Samudrala wrote:
> > If the QDISC_RUNNING flag guarantees that only one CPU can call
> > dev->hard_start_xmit(), then why do we need to hold netif_tx_lock
> > for non-LLTX drivers?
> I havent stared at other drivers, but for e1000 seems to me 
> even if you got rid of LLTX that netif_tx_lock is unnecessary.
> Herbert?

It would guard against the poll routine which would acquire this lock
when cleaning the TX ring.

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