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From: David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH 09/12] net: sched: pfifo_fast use alf_queue
Date: Wed, 13 Jan 2016 11:24:59 -0500 (EST)
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From: John Fastabend <john.fastabend@gmail.com>
Date: Wed, 30 Dec 2015 09:54:20 -0800

> This also removes the logic used to pick the next band to dequeue
> from and instead just checks each alf_queue for packets from
> top priority to lowest. This might need to be a bit more clever
> but seems to work for now.

I suspect we won't need to be more clever, there's only 3 bands
after all and the head/tail tests should be fast enough.