linux-kernel - Re: [TOMOYO 05/15](repost) Domain transition handler functions.

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Message-Id: <20071003.221116.83306587.yoshfuji@linux-ipv6.org>
Date:	Wed, 03 Oct 2007 22:11:16 +0900 (JST)
From:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
To:	penguin-kernel@...ove.SAKURA.ne.jp
Cc:	jmorris@...ei.org, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, chrisw@...s-sol.org,
	yoshfuji@...ux-ipv6.org
Subject: Re: [TOMOYO 05/15](repost) Domain transition handler functions.

In article <200710032204.DFF51552.OFOSOFMVQtHLJF@...ove.SAKURA.ne.jp> (at Wed, 3 Oct 2007 22:04:11 +0900), Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> says:

> Well, is there a way to avoid read_lock when reading list?
> 
> Currently, TOMOYO Linux avoids read_lock, on the assumption that
> (1) First, ptr->next is initialized with NULL.
> (2) Later, ptr->next is assigned non-NULL address.
> (3) Assigning to ptr->next is done atomically.

RCU?

--yoshfuji
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