From 1fa8f6d68b5c8ca0a608fd8d296c5f07ac788cd6 Mon Sep 17 00:00:00 2001
From: Vivek Goyal <vgoyal@redhat.com>
Date: Thu, 3 Dec 2009 12:59:41 -0500
Subject: [PATCH] blkio: Introduce the root service tree for cfq groups

o So far we just had one cfq_group in cfq_data. To create space for more than
  one cfq_group, we need to have a service tree of groups where all the groups
  can be queued if they have active cfq queues backlogged in these.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
Reading git-format-patch failed