From 74f9ce1cf2830b94e189f4e99678dbf19aa3bc90 Mon Sep 17 00:00:00 2001
From: George Wang <xuw2015@gmail.com>
Date: Fri, 29 May 2015 07:39:34 +1000
Subject: [PATCH] xfs: use percpu_counter_read_positive for mp->m_icount

Function percpu_counter_read just return the current counter, which can be
negative. This will cause the checking of "allocated inode
counts <= m_maxicount" false positive. Use percpu_counter_read_positive can
solve this problem, and be consistent with the purpose to introduce percpu
mechanism to xfs.

Signed-off-by: George Wang <xuw2015@gmail.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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