Message-ID: <46C2FB81.8040307@s5r6.in-berlin.de>
Date: Wed, 15 Aug 2007 15:11:29 +0200
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
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To: Satyam Sharma <satyam@infradead.org>
CC: Christoph Lameter <clameter@sgi.com>, Chris Snook <csnook@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-arch@vger.kernel.org,
       Linus Torvalds <torvalds@linux-foundation.org>, netdev@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>, ak@suse.de,
       heiko.carstens@de.ibm.com, davem@davemloft.net, schwidefsky@de.ibm.com,
       wensong@linux-vs.org, horms@verge.net.au, wjiang@resilience.com,
       cfriesen@nortel.com, zlynx@acm.org, rpjday@mindspring.com,
       jesper.juhl@gmail.com, segher@kernel.crashing.org,
       Herbert Xu <herbert@gondor.apana.org.au>,
       "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH 0/24] make atomic_read() behave consistently across all
 architectures
References: <20070809131423.GA9927@shell.boston.redhat.com> <Pine.LNX.4.64.0708141529310.32693@schroedinger.engr.sgi.com> <alpine.LFD.0.999.0708150417240.6482@enigma.security.iitk.ac.in> <46C2D6F3.3070707@s5r6.in-berlin.de> <alpine.LFD.0.999.0708151713080.16414@enigma.security.iitk.ac.in> <46C2FADB.7020407@s5r6.in-berlin.de>
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I wrote:
> static inline void A(atomic_t *a)
> {
> 	int b = atomic_read(a);
> 	if (b)
> 		do_something_time_consuming();
> }
> 
> static inline void B(atomic_t *a)
> {
> 	int b = atomic_read(a);
> 	if (b)
> 		do_something_more();
> }
> 
> static void C(atomic_t *a)
> {
> 	A(a);
> 	B(b);
	/* ^ typo */
	B(a);
> }
> 
> Would this need forget(a) after A(a)?
> 
> (Is the latter actually answered in C99 or is it compiler-dependent?)


-- 
Stefan Richter
-=====-=-=== =--- -====
http://arcgraph.de/sr/
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