linux-kernel - Re: [PATCH tip/core/rcu 06/17] rcu: Remove return value from RCU_INIT

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Message-ID: <30026.1340381181@redhat.com>
Date:	Fri, 22 Jun 2012 17:06:21 +0100
From:	David Howells <dhowells@...hat.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org, mingo@...e.hu,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	eric.dumazet@...il.com, darren@...art.com, fweisbec@...il.com,
	sbw@....edu, patches@...aro.org
Subject: Re: [PATCH tip/core/rcu 06/17] rcu: Remove return value from RCU_INIT_POINTER()

Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> 
> The return value from RCU_INIT_POINTER() is not used, and using it
> would be quite ugly, for example:
> 
> 	q = RCU_INIT_POINTER(global_p, p);
> 
> To prevent this sort of ugliness from appearing, this commit wraps
> RCU_INIT_POINTER() in a do-while loop.
> 
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Reviewed-by: Josh Triplett <josh@...htriplett.org>

Acked-by: David Howells <dhowells@...hat.com>
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