From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 3 Jul 2009 10:57:48 +0000 (+0200)
Subject: cfq-iosched: drain device queue before switching to a sync queue
X-Git-Tag: v2.6.32-rc1~688^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ad531db6e0f3c3c985666e83d3c1c4d53acccf9;p=pandora-kernel.git

cfq-iosched: drain device queue before switching to a sync queue

To lessen the impact of async IO on sync IO, let the device drain of
any async IO in progress when switching to a sync cfqq that has idling
enabled.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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