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Re: [Xen-devel] [PATCH v2] xen/netback: Wake dealloc thread after completing zerocopy work

From: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
Date: Tue, 4 Aug 2015 15:40:59 +0100

> Waking the dealloc thread before decrementing inflight_packets is racy
> because it means the thread may go to sleep before inflight_packets is
> decremented. If kthread_stop() has already been called, the dealloc
> thread may wait forever with nothing to wake it. Instead, wake the
> thread only after decrementing inflight_packets.
> Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
> ---
> Changed in V2: Move wakeup into zerocopy_complete function.

Applied, thanks.

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