Subject: Re: Linux/Pro  -- clusters
To: Andries.Brouwer@cwi.nl
Date: Mon, 10 Dec 2001 20:34:24 +0000 (GMT)
Cc: alan@lxorguk.ukuu.org.uk, viro@math.psu.edu, linux-kernel@vger.kernel.org,
        torvalds@transmeta.com
In-Reply-To: <UTC200112101951.TAA270246.aeb@cwi.nl> from "Andries.Brouwer@cwi.nl" at Dec 10, 2001 07:51:39 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Sender: linux-kernel-owner@vger.kernel.org

>     And it means we can get proper refcounting. Which as the maintainer of
>     two block drivers that support dynamic volume create/destroy is remarkably
>     good news.
> 
> You say this as if that would be a difference between the two
> approaches. I don't think it is.

Its easier to make sure its correct when we have a single structure not
a pile of arrays. Object lifetime becomes explicit, and we don't have to
worry about re-use races since a new instance of that major,minor will have
a different object attached to the one in use that is about to be refcounted
into oblivion by currently active requests
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