From 8d2a91f8960b230b8bbcc4d97ed2015f5271c87d Mon Sep 17 00:00:00 2001
From: Divyesh Shah <dpshah@google.com>
Date: Fri, 16 Apr 2010 08:10:51 +0200
Subject: [PATCH] blkio: Initialize blkg->stats_lock for the root cfqg too

This fixes the lockdep warning reported by Gui Jianfeng.

Signed-off-by: Divyesh Shah <dpshah@google.com>
Reviewed-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Reading git-format-patch failed