From aa539cb38f4f1365ad52fed6a857b25f8b4dc06c Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Tue, 14 May 2013 13:52:31 -0700
Subject: [PATCH] blkcg: implement blkg_for_each_descendant_post()

This will be used by blk-throttle hierarchy support.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
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