From: Jesper Dangaard Brouer <brouer@redhat.com>
Date: Mon, 28 Jan 2013 23:44:37 +0000 (+0000)
Subject: net: cacheline adjust struct inet_frags for better frag performance
X-Git-Tag: v3.9-rc1~139^2~232^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f8e1e8b767bdb8e471d4f49612b88c606f8811e;p=pandora-kernel.git

net: cacheline adjust struct inet_frags for better frag performance

The globally shared rwlock, of struct inet_frags, shares
cacheline with the 'rnd' number, which is used by the hash
calculations.  Fix this, as this obviously is a bad idea, as
unnecessary cache-misses will occur when accessing the 'rnd'
number.

Also small note that, moving function ptr (*match) up in struct,
is to avoid it lands on the next cacheline (on 64-bit).

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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