From: Seth Jennings <sjenning@linux.vnet.ibm.com>
Date: Thu, 9 Feb 2012 18:25:02 +0000 (-0600)
Subject: staging: zcache: fix serialization bug in zv stats
X-Git-Tag: v3.4-rc1~186^2~176^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72a9826b45c0d126f47c1acc8444c5d9ee478fcd;p=pandora-kernel.git

staging: zcache: fix serialization bug in zv stats

In a multithreaded workload, the zv_curr_dist_counts
and zv_cumul_dist_counts statistics are being corrupted
because the increments and decrements in zv_create
and zv_free are not atomic.

This patch converts these statistics and their corresponding
increments/decrements/reads to atomic operations.

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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