From: Fengguang Wu <fengguang.wu@intel.com>
Date: Sun, 6 May 2012 05:21:42 +0000 (+0800)
Subject: writeback: initialize global_dirty_limit
X-Git-Tag: v3.5-rc1~60^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68809c7108b9a75baf2a888b1c19ce1a4680f600;p=pandora-kernel.git

writeback: initialize global_dirty_limit

This prevents global_dirty_limit from remaining 0 (the initial value)
for long time, since it's only updated in update_dirty_limit() when
above the dirty freerun area.

It will avoid unexpected consequences when some random code use it as a
convenient approximation of the global dirty threshold.

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
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