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Subject: Re: remove cpu hotplug bustification in cpufreq.
From: Arjan van de Ven <arjan@linux.intel.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Ashok Raj <ashok.raj@intel.com>, linux-kernel@vger.kernel.org,
       davej@redhat.com, Andrew Morton <akpm@osdl.org>
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Date: Sun, 23 Jul 2006 06:09:14 +0200
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On Sat, 2006-07-22 at 18:15 -0700, Linus Torvalds wrote:
> 
> On Sat, 22 Jul 2006, Andrew Morton wrote:
> > 
> > It was just wrong in conception.  We should not and probably cannot fix it.
> > Let's just delete it all, then implement version 2.
> 
> Well, I just got Ashok's trial patches which turns the thing into a rwsem 
> as I outlined earlier.

with rwsems being 100% fair... how is that going to make a difference?
Other than just making the deadlock harder to trigger because the writer
needs to come in just at the right time...