From 9ed0dea09fc5e8cb1926c15fc986a46a2db43da6 Mon Sep 17 00:00:00 2001
From: Zhaolei <zhaolei@cn.fujitsu.com>
Date: Thu, 6 Aug 2015 22:16:24 +0800
Subject: [PATCH] btrfs: Remove root argument in extent_data_ref_count()

Because it is never used.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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Reading git-format-patch failed