From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 4 Jun 2009 15:59:49 +0000 (+0000)
Subject: ixgbe: use rx_buffer_info->dma instead of nr_frags to determine skb unmap
X-Git-Tag: v2.6.31-rc1~330^2~149
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21fa4e66bd0bedfa4ed6aa6f7008b2aff6d45c8d;p=pandora-kernel.git

ixgbe: use rx_buffer_info->dma instead of nr_frags to determine skb unmap

This patch changes the driver so that it uses rx_buffer_info->dma to
determine if it needs to unmap the page instead of sh_info->nr_frags.  This
helps to prevent a cache line miss when receiving small packets as the
rx_buffer_info data should already be in the cache.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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