Re: [patch] revert: [NET]: Fix races in net_rx_action vs netpoll

From: Jarek Poplawski
Date: Tue Jul 17 2007 - 05:04:14 EST


On Tue, Jul 17, 2007 at 10:28:34AM +0200, Olaf Kirch wrote:
> On Tuesday 17 July 2007 09:55, Olaf Kirch wrote:
> > What I find more problematic about this portion of code though
> > is that once a net_device is over quota, net_rx_action will
> > loop for up to one jiffy, even if there's just this one device on
> > the poll_list.
>
> Duh, wrong. For every loop, it'll add dev->weight to dev->quota,
> so it'll be fine very soon.

After your patch only two things can be different here: dev->poll_list
and this flag. Since Ingo offered testing it should be easy to check
after moving the check of "your" flag to __netif_rx_complete, and
skipping only list_del on true.

Jarek P.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/