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Date: Sun, 23 Mar 2003 14:55:23 +1100
From: Anton Blanchard <anton@samba.org>
To: Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: smp overhead, and rwlocks considered harmful
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References: <20030322175816.225a1f23.akpm@digeo.com>
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> One thing is noteworthy: ia32's read_unlock() is buslocked, whereas
> spin_unlock() is not.  

Dont forget bitops/atomics used as spinlocks like the rmap pte chain lock.

Anton
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