Subject: 
Date: Sat Jan 07 22:50:45 CST 2012

The uninitilized shift may lead to denominator=0 in
prop_fraction_percpu() and divide error in bdi_dirty_limit().

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 lib/proportions.c |    1 +
 1 file changed, 1 insertion(+)

--- linux.orig/lib/proportions.c	2012-01-07 22:50:29.000000000 +0800
+++ linux/lib/proportions.c	2012-01-07 22:50:37.000000000 +0800
@@ -82,6 +82,7 @@ int prop_descriptor_init(struct prop_des
 
 	pd->index = 0;
 	pd->pg[0].shift = shift;
+	pd->pg[1].shift = shift;
 	mutex_init(&pd->mutex);
 	err = percpu_counter_init(&pd->pg[0].events, 0);
 	if (err)