Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755864Ab3H3VnP (ORCPT ); Fri, 30 Aug 2013 17:43:15 -0400 Received: from g4t0016.houston.hp.com ([15.201.24.19]:31675 "EHLO g4t0016.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753887Ab3H3VnO (ORCPT ); Fri, 30 Aug 2013 17:43:14 -0400 Message-ID: <522111E1.20508@hp.com> Date: Fri, 30 Aug 2013 17:42:57 -0400 From: Waiman Long User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130109 Thunderbird/10.0.12 MIME-Version: 1.0 To: Al Viro CC: Linus Torvalds , Ingo Molnar , Benjamin Herrenschmidt , Jeff Layton , Miklos Szeredi , Ingo Molnar , Thomas Gleixner , linux-fsdevel , Linux Kernel Mailing List , Peter Zijlstra , Steven Rostedt , Andi Kleen , "Chandramouleeswaran, Aswin" , "Norton, Scott J" Subject: Re: [PATCH v7 1/4] spinlock: A new lockref structure for lockless update of refcount References: <52200DAE.2020303@hp.com> <5220E56A.80603@hp.com> <5220F090.5050908@hp.com> <5220FD51.2010709@hp.com> <20130830205404.GF13318@ZenIV.linux.org.uk> <52210A55.8010308@hp.com> <20130830213029.GG13318@ZenIV.linux.org.uk> In-Reply-To: <20130830213029.GG13318@ZenIV.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 582 Lines: 14 On 08/30/2013 05:30 PM, Al Viro wrote: > On Fri, Aug 30, 2013 at 05:10:45PM -0400, Waiman Long wrote: > See above. You are right, but if Linus wants to turn that sucker into > reader (which is possible - see e.g. cifs build_path_from_dentry() and > its ilk), d_move() races will start to play. Thank for the clarification. -Longman -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/