On Thu, Aug 21, 2008 at 06:49:41AM +0000, Jarek Poplawski wrote:

We need to check if something depends on &noop_qdisc returned in the
similar state. Otherwise, there is a bit too much possibilities here,
so it would be nice to simplify this all.

Actually, why do we even keep a netdev_queue pointer in a qdisc?
A given qdisc can be used by multiple queues (which is why the
lock was moved into the qdisc in the first place).

How about keeping a pointer directly to the root qdisc plus a
pointer to the netdev (which seems to be the only other use for
qdisc->dev_queue)? That way there won't be any confusion as to
whether we want the sleeping or non-sleeping qdisc.

Cheers,
-- 
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