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From: Daniel Phillips <phillips@bonn-fries.net>
To: Linus Torvalds <torvalds@transmeta.com>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH] Lightweight userspace semaphores...
Date: Sun, 24 Feb 2002 05:57:39 +0100
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Cc: Rusty Russell <rusty@rustcorp.com.au>, <mingo@elte.hu>,
        Matthew Kirkwood <matthew@hairy.beasts.org>,
        Benjamin LaHaise <bcrl@redhat.com>, David Axmark <david@mysql.com>,
        William Lee Irwin III <wli@holomorphy.com>,
        <linux-kernel@vger.kernel.org>, Larry McVoy <lm@bitmover.com>
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On February 25, 2002 08:31 pm, Linus Torvalds wrote:
> On Mon, 25 Feb 2002, Alan Cox wrote:
> > Ok I see where you are coming from now -- that makes sense for a few 
> > cases.
> 
> Note that the "few cases" in question imply _all_ of the current broken 
> library spinlocks, for example. 
> 
> Don't think "POSIX semaphores", but think "fast locking" in the general
> case. I will bet you $1 in small change that most normal locking by far is
> for the kind of thread-safe stuff libc does right now.

This looks like another piece of the equation needed to make Larry's smp 
cluster concept come true.  So...

-- 
Daniel
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