From: Jan Kara <jack@suse.cz>
Date: Thu, 24 May 2012 16:59:11 +0000 (+0200)
Subject: block: Convert BDI proportion calculations to flexible proportions
X-Git-Tag: v3.6-rc1~37^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb608e3a344b3af21300360fcf868f8b4e808a8e;p=pandora-kernel.git

block: Convert BDI proportion calculations to flexible proportions

Convert calculations of proportion of writeback each bdi does to new flexible
proportion code. That allows us to use aging period of fixed wallclock time
which gives better proportion estimates given the hugely varying throughput of
different devices.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
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