netdev - [PATCH 2/3] udp: Use hlist

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Message-ID: <491C2867.5030807@cosmosbay.com>
Date:	Thu, 13 Nov 2008 14:15:19 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	David Miller <davem@...emloft.net>
CC:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Corey Minyard <minyard@....org>,
	Stephen Hemminger <shemminger@...tta.com>,
	benny+usenet@...rsen.dk,
	Linux Netdev List <netdev@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Evgeniy Polyakov <zbr@...emap.net>,
	Christian Bell <christian@...i.com>
Subject: [PATCH 2/3] 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@...mosbay.com>
---
 include/linux/rculist.h |   17 -----------
 include/net/sock.h      |   57 ++++++++++++++++++++++++++++++--------
 include/net/udp.h       |    2 -
 net/ipv4/udp.c          |   47 ++++++++++++++-----------------
 net/ipv6/udp.c          |   26 +++++++++--------
 5 files changed, 83 insertions(+), 66 deletions(-)


View attachment "UDP.patch" of type "text/plain" (13934 bytes)