netdev - Re: [PATCH] netfilter: use per-cpu recursive lock (v11)

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Message-ID: <49ED8700.3010603@cn.fujitsu.com>
Date:	Tue, 21 Apr 2009 16:42:40 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Evgeniy Polyakov <zbr@...emap.net>
CC:	Stephen Hemminger <shemminger@...tta.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Paul Mackerras <paulus@...ba.org>, paulmck@...ux.vnet.ibm.com,
	David Miller <davem@...emloft.net>, kaber@...sh.net,
	torvalds@...ux-foundation.org, jeff.chua.linux@...il.com,
	mingo@...e.hu, jengelh@...ozas.de, r000n@...0n.net,
	linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
	netdev@...r.kernel.org, benh@...nel.crashing.org,
	mathieu.desnoyers@...ymtl.ca
Subject: Re: [PATCH] netfilter: use per-cpu recursive lock (v11)

Evgeniy Polyakov wrote:
> 
> Netfilter as long as other generic network pathes are never accessed
> from interrupt context, but your analysis looks right for the softirq
> case.
> 

A question:

softirq is always not nesting. Why we need recursive lock?

Lai.

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