From 4724b106b9b8e8b802ca6f6d8a2f74feb8a3c375 Mon Sep 17 00:00:00 2001
From: Josef Bacik <jbacik@fusionio.com>
Date: Tue, 5 Nov 2013 11:11:40 -0500
Subject: [PATCH] Btrfs: don't BUG_ON() if we get an error walking backrefs

We can just return false for this so we stop doing the snapshot aware defrag
stuff.  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