From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [PATCH 1/3] fs: Document the reflink(2) system call.
Date: Wed, 6 May 2009 00:14:50 +0100
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Joel Becker wrote:
> Both btrfs and ocfs2 will only copy the hunk modified, leaving the
> rest of the file shared; you won't have long wait times for the CoW
> of large files just because you modified one byte.

Which is brilliant and perfect, and should be near the top of any
marketing materials for reflink :-)

-- Jamie