From: Shaohua Li <shaohua.li@intel.com>
Date: Mon, 28 Dec 2009 12:18:44 +0000 (+0100)
Subject: cfq-iosched: don't regard requests with long distance as close
X-Git-Tag: v2.6.33-rc3~40^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f7a2d89a8b5915d89ad9ebeb0065db7d5831cea;p=pandora-kernel.git

cfq-iosched: don't regard requests with long distance as close

seek_mean could be very big sometimes, using it as close criteria is meaningless
as this doen't improve any performance. So if it's big, let's fallback to
default value.

Reviewed-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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