From 0e30db86a4524f9e655e8cb9335b4da1787db3c1 Mon Sep 17 00:00:00 2001
From: Josef Bacik <jbacik@fusionio.com>
Date: Mon, 14 Oct 2013 13:15:02 -0400
Subject: [PATCH] Btrfs: add a sanity test for a vacant extent at the front of
 a file

Btrfs_get_extent was not handling this case properly, add a test to make sure we
don't regress.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Reading git-format-patch failed