From b50da39f51139f81b3115d0f9d8632507f802755 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Wed, 9 Jan 2013 08:05:12 -0800
Subject: [PATCH] blkcg: export __blkg_prfill_rwstat()

Hierarchical stats for cfq-iosched will need __blkg_prfill_rwstat().
Export it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
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Reading git-format-patch failed