From: George Wang <xuw2015@gmail.com>
Date: Thu, 28 May 2015 21:39:34 +0000 (+1000)
Subject: xfs: use percpu_counter_read_positive for mp->m_icount
X-Git-Tag: omap-for-v4.2/wakeirq-drivers-v2^2~2^2~37^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74f9ce1cf2830b94e189f4e99678dbf19aa3bc90;p=pandora-kernel.git

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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