From: Jens Axboe <jens.axboe@oracle.com>
Date: Sat, 3 Oct 2009 14:26:03 +0000 (+0200)
Subject: cfq-iosched: implement slower async initiate and queue ramp up
X-Git-Tag: v2.6.32-rc3~6^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e2967555571659d2c8a70dd120710110ed7bba4;p=pandora-kernel.git

cfq-iosched: implement slower async initiate and queue ramp up

This slowly ramps up the async queue depth based on the time
passed since the sync IO, and doesn't allow async at all until
a sync slice period has passed.

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