Date: Mon, 29 Oct 2007 13:47:20 -0600
From: Andreas Dilger <adilger@sun.com>
To: Mike Waychison <mikew@google.com>
Cc: Chris Mason <chris.mason@oracle.com>, Anton Altaparmakov <aia21@cam.ac.uk>,
       linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
       Kalpak Shah <Kalpak.Shah@sun.com>
Subject: Re: [patch 0/6][RFC] Cleanup FIBMAP
Message-ID: <20071029194720.GC3042@webber.adilger.int>
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	Chris Mason <chris.mason@oracle.com>,
	Anton Altaparmakov <aia21@cam.ac.uk>, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, Kalpak Shah <Kalpak.Shah@Sun.COM>
References: <20071026233732.568575496@crlf.corp.google.com> <E579083F-FED3-4990-8E24-275ED38E9E3B@cam.ac.uk> <20071029101001.4378a7cf@think.oraclecorp.com> <47263187.5070106@google.com>
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On Oct 29, 2007  12:16 -0700, Mike Waychison wrote:
> Chris Mason wrote:
>> Reiserfs and Btrfs also use 0 to mean packed.  It would be nice if there
>> was a way to indicate your-data-is-here-but-isn't-alone.  But that's
>> more of a feature for the FIEMAP stuff.
>
> I hadn't heard of FIEMAP, so I went back and read the thread from 
> April/May.  It seems that this is a much better approach than introducing a 
> FIBMAP64.
>
> What ever happened with this proposal?

We made a patch for ext4 that we need to update and push upstream.  I've
just resent the spec we used in a separate email (attached to old thread)
for reference.

Cheers, Andreas
--
Andreas Dilger
Sr. Software Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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