From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [patch 1/3] net: serialize hrtimer callback in sched_cbq
Date: Tue, 14 Jul 2009 09:01:24 -0700 (PDT)
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From: Patrick McHardy <kaber@trash.net>
Date: Tue, 14 Jul 2009 10:22:02 +0200

> That's my understanding what HRTIMER_SOFTIRQ is used for. I think
> simply grabbing the root lock in cbq_undelay() should be fine.
> 
> Compile-tested only.

Unfortunately, as Peter and Thomas explained, this is not the case.