linux-kernel - Re: [PATCH] "volatile considered harmful" document

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Message-ID: <m33b208z5f.fsf@maximus.localdomain>
Date:	Sun, 13 May 2007 18:30:04 +0200
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Robert Hancock <hancockr@...w.ca>
Cc:	Bill Davidsen <davidsen@....com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH] "volatile considered harmful" document

Robert Hancock <hancockr@...w.ca> writes:

> You don't need volatile in that case, rmb() can be used.

rmb() invalidates all compiler assumptions, it can be much slower.
-- 
Krzysztof Halasa
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