From: Nitin Gupta <ngupta@vflare.org>
Date: Thu, 28 Jan 2010 15:43:37 +0000 (+0530)
Subject: Staging: ramzswap: Use lock for 64-bit stats
X-Git-Tag: v2.6.34-rc1~10^2~1^2~127
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a90772886d5d6812f9b2775d3caa0dc002754e0;p=pandora-kernel.git

Staging: ramzswap: Use lock for 64-bit stats

64-bit stats corruption was observed when ramzswap was
used on SMP systems. To prevent this, use separate spinlock
to protect these stats.

Also, replace stat_*() with rzs_stat*() to avoid possible
conflict with core kernel code.

Eventually, these will be converted to per-cpu counters
if this driver finds use on large scale systems and this
locking is found to affect scalability.

Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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