Re: [Xen-devel] [PATCH net] xen-netback: fix vif tx queue race in xenvif_rx_interrupt

[David Miller <davem@xxxxxxxxxxxxx>]

From: Ma JieYue <majieyue@xxxxxxxxx>
Date: Thu,  9 Jan 2014 03:24:21 +0800

> -     if (xenvif_rx_schedulable(vif))
> +     if (netif_queue_stopped(vif->dev) && xenvif_rx_schedulable(vif))

I do not see anything which prevents a netif_stop_queue() call from happening
between these two tests in another thread of control.

This therefore looks like a bandaid and not a real fix.

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