From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH nf-next] netfilter: conntrack: remove the central
 spinlock
Date: Thu, 09 May 2013 06:46:58 -0700
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Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org
To: Cong Wang <xiyou.wangcong@gmail.com>
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On Thu, 2013-05-09 at 07:46 +0000, Cong Wang wrote:

> 
> Either it is not expected to use arch_spin_lock directly, or it has to
> provide a nop for non-IA64.

I suggest you check yourself ;)

# git grep -n arch_spin_lock_init
arch/ia64/include/asm/spinlock.h:19:#define arch_spin_lock_init(x)                      ((x)->lock = 0)

This definition is not used at all.

It should for consistency, and it's not a netfilter concern.