On Thu, Aug 21, 2008 at 05:27:54AM -0700, David Miller wrote:
You're right, this doesn't work at all. In fact it's been broken
even before we removed the root lock. The problem is that we used
to have one big linked list for each device. That was protected
by the device qdisc lock. Now we have one list for each txq and
qdisc_lookup walks every single txq. This means that no single
qdisc root lock can protect this anymore.
Cheers,
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