linux-kernel - Re: [PATCH 06/16] SPARC: use ACCESS

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Message-Id: <20091118.095526.43570583.davem@davemloft.net>
Date:	Wed, 18 Nov 2009 09:55:26 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jslaby@...ell.com
Cc:	jirislaby@...il.com, mingo@...e.hu, nhorman@...driver.com,
	sfr@...b.auug.org.au, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, marcin.slusarz@...il.com,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	torvalds@...ux-foundation.org, jmorris@...ei.org,
	heiko.carstens@...ibm.com, sparclinux@...r.kernel.org
Subject: Re: [PATCH 06/16] SPARC: use ACCESS_ONCE for rlimits

From: Jiri Slaby <jslaby@...ell.com>
Date: Wed, 18 Nov 2009 15:51:52 +0100

> Make sure compiler won't do weird things with limits. E.g. fetching
> them twice may return 2 different values after writable limits are
> implemented.
> 
> Signed-off-by: Jiri Slaby <jslaby@...ell.com>

Acked-by: David S. Miller <davem@...emloft.net>

But I wonder have we really seen the compiler create this
kind of situation?  Or is this patch series based upon the
fact that it "could happen"?
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