From mboxrd@z Thu Jan 1 00:00:00 1970 From: Waiman Long Subject: Re: [PATCH v7 1/4] spinlock: A new lockref structure for lockless update of refcount Date: Fri, 30 Aug 2013 17:42:57 -0400 Message-ID: <522111E1.20508@hp.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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" To: Al Viro Return-path: In-Reply-To: <20130830213029.GG13318@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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