From: Shaohua Li writes <shaohua.li@intel.com>
Date: Mon, 13 Dec 2010 13:32:22 +0000 (+0100)
Subject: block cfq: select new workload if priority changed
X-Git-Tag: v2.6.38-rc1~231^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4ea0c16a85d221ebcc3a21f32e321440459e0fc;p=pandora-kernel.git

block cfq: select new workload if priority changed

If priority is changed, continuing to check workload_expires and service tree
count of the previous workload does not make sense. We should always choose
the workload with lowest key of new priority in such case.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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