From: Eric Dumazet <dada1@cosmosbay.com>
Date: Mon, 17 Nov 2008 03:39:21 +0000 (-0800)
Subject: udp: Use hlist_nulls in UDP RCU code
X-Git-Tag: v2.6.29-rc1~581^2~703
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88ab1932eac721c6e7336708558fa5ed02c85c80;p=pandora-kernel.git

udp: Use hlist_nulls in UDP RCU code

This is a straightforward patch, using hlist_nulls infrastructure.

RCUification already done on UDP two weeks ago.

Using hlist_nulls permits us to avoid some memory barriers, both
at lookup time and delete time.

Patch is large because it adds new macros to include/net/sock.h.
These macros will be used by TCP & DCCP in next patch.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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