From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762367Ab2FVQHt (ORCPT ); Fri, 22 Jun 2012 12:07:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:9183 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755813Ab2FVQHr (ORCPT ); Fri, 22 Jun 2012 12:07:47 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <1340379312-6684-6-git-send-email-paulmck@linux.vnet.ibm.com> References: <1340379312-6684-6-git-send-email-paulmck@linux.vnet.ibm.com> <20120622153501.GA6626@linux.vnet.ibm.com> <1340379312-6684-1-git-send-email-paulmck@linux.vnet.ibm.com> To: "Paul E. McKenney" Cc: dhowells@redhat.com, linux-kernel@vger.kernel.org, mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, eric.dumazet@gmail.com, darren@dvhart.com, fweisbec@gmail.com, sbw@mit.edu, patches@linaro.org Subject: Re: [PATCH tip/core/rcu 06/17] rcu: Remove return value from RCU_INIT_POINTER() Date: Fri, 22 Jun 2012 17:06:21 +0100 Message-ID: <30026.1340381181@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Paul E. McKenney wrote: > From: "Paul E. McKenney" > > 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 > Reviewed-by: Josh Triplett Acked-by: David Howells