From: Jiang Liu <liuj97@gmail.com>
Date: Thu, 6 Jun 2013 16:07:30 +0000 (+0800)
Subject: zram: optimize memory operations with clear_page()/copy_page()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~76^2~222
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42e99bd975fdd24d2bf1a24ebb8b0b42bab8ba65;p=pandora-kernel.git

zram: optimize memory operations with clear_page()/copy_page()

Some architectures provides architecture-specific, optimized version of
clear_page()/copy_page(), which may have better performance than
memset()/memcpy(). So use clear_page()/copy_page() to optimize zram
performance if possible.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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