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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] convert hh_lock to seqlock
Date: Thu, 07 Dec 2006 15:07:18 -0800 (PST)
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From: Eric Dumazet <dada1@cosmosbay.com>
Date: Fri, 08 Dec 2006 00:02:44 +0100

> What's the problem with my suggestion of keeping hh_refcnt on
> another cache line ?  It is basically free (once your change from
> rwlock to seqlock put in), and no change of algorithm.

I think this change is worthwhile for the short term
until we get time to implement something like the RCU
idea.