From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sunil Mushran <sunil.mushran@oracle.com>
Subject: Extend FIEMAP to indicate shared extents
Date: Wed, 21 Oct 2009 18:05:07 -0700
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This adds a FIEMAP extent flag, FIEMAP_EXTENT_SHARED, to indicate
extents that are shared by multiple files. The second patch makes
use of the same in the OCFS2 file system to show such extents in
the reflinked files.

Thanks
Sunil