From: Corrado Zoccolo <czoccolo@gmail.com>
Date: Thu, 8 Oct 2009 06:43:32 +0000 (+0200)
Subject: cfq-iosched: avoid probable slice overrun when idling
X-Git-Tag: v2.6.32-rc5~26^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=355b659c87432a4e76160640625c47fcf9174e8d;p=pandora-kernel.git

cfq-iosched: avoid probable slice overrun when idling

If the average think time is larger than the remaining time slice
for any given queue, don't allow it to idle. A succesful idle also
means that we need to dispatch and complete a request, so if we don't
even have time left for the idle process, we would overrun the slice
in any case.

Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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