linux-kernel - Re: [-mm PATCH 1/4] RCU: split classic rcu

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Message-ID: <20060925165433.GA28898@infradead.org>
Date:	Mon, 25 Sep 2006 17:54:33 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Dipankar Sarma <dipankar@...ibm.com>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	Paul E McKenney <paulmck@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [-mm PATCH 1/4] RCU: split classic rcu

On Sat, Sep 23, 2006 at 09:01:41PM +0530, Dipankar Sarma wrote:
> 
> This patch re-organizes the RCU code to enable multiple implementations
> of RCU. Users of RCU continues to include rcupdate.h and the
> RCU interfaces remain the same. This is in preparation for
> subsequently merging the preepmtpible RCU implementation.

I still disagree very strongly.  In a given tree there should be oneRCU
implementation for the traditional interface.  We probably want srcu
in addition, but not things hiding behind the interface.
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