From: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Date: Thu, 26 Nov 2009 08:14:11 +0000 (+0100)
Subject: cfq: Make use of service count to estimate the rb_key offset
X-Git-Tag: v2.6.33-rc1~379^2~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3586e917f2c7df769d173c4ec99554cb40a911e5;p=pandora-kernel.git

cfq: Make use of service count to estimate the rb_key offset

For the moment, different workload cfq queues are put into different
service trees. But CFQ still uses "busy_queues" to estimate rb_key
offset when inserting a cfq queue into a service tree. I think this
isn't appropriate, and it should make use of service tree count to do
this estimation. This patch is for for-2.6.33 branch.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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