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Message-ID: <20080110085459.GA11966@infradead.org>
Date: Thu, 10 Jan 2008 08:54:59 +0000
From: Christoph Hellwig <hch@...radead.org>
To: Jens Axboe <jens.axboe@...cle.com>
Cc: Christoph Hellwig <hch@...radead.org>,
Nick Piggin <nickpiggin@...oo.com.au>,
linux-kernel@...r.kernel.org, chris.mason@...cle.com,
linux-fsdevel@...r.kernel.org,
Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH][RFC] fast file mapping for loop
On Thu, Jan 10, 2008 at 09:44:57AM +0100, Jens Axboe wrote:
> > IMHO this shouldn't be done in the loop driver anyway. Filesystems have
> > their own effricient extent lookup trees (well, at least xfs and btrfs
> > do), and we should leverage that instead of reinventing it.
>
> Completely agree, it's just needed right now for this solution since all
> we have is a crappy bmap() interface to get at those mappings.
So let's fix the interface instead of piling crap ontop of it. As I
said I think Peter has something to start with so let's beat on it
until we have something suitable. If we aren't done by end of Feb
I'm happy to host a hackfest to get it sorted around the fs/storage
summit..
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