From ed7b63eb8afd0bb8d978a23184d70c105b54aa26 Mon Sep 17 00:00:00 2001
From: Josef Bacik <jbacik@fusionio.com>
Date: Mon, 15 Oct 2012 13:33:54 -0400
Subject: [PATCH] Btrfs: only clear dirty on the buffer if it is marked as
 dirty

No reason to set the path blocking or loop through all of the pages if the
extent buffer isn't actually marked dirty.  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