Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755953Ab3H2EqN (ORCPT ); Thu, 29 Aug 2013 00:46:13 -0400 Received: from gate.crashing.org ([63.228.1.57]:49700 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753261Ab3H2EqL (ORCPT ); Thu, 29 Aug 2013 00:46:11 -0400 Message-ID: <1377751465.4028.20.camel@pasglop> Subject: Re: [PATCH v7 1/4] spinlock: A new lockref structure for lockless update of refcount From: Benjamin Herrenschmidt To: Linus Torvalds Cc: Waiman Long , Alexander Viro , 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" Date: Thu, 29 Aug 2013 14:44:25 +1000 In-Reply-To: References: <1375758759-29629-1-git-send-email-Waiman.Long@hp.com> <1375758759-29629-2-git-send-email-Waiman.Long@hp.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.6.4-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1379 Lines: 32 On Wed, 2013-08-28 at 18:40 -0700, Linus Torvalds wrote: > Just FYI: I've merged two preparatory patches in my tree for the whole > lockref thing. Instead of applying your four patches as-is during the > merge window, I ended up writing two patches that introduce the > concept and use it in the dentry code *without* introducing any of the > new semantics yet. > > Waiman, I attributed the patches to you, even if they don't actually > look much like any of the patches you sent out. And because I was > trying very hard to make sure that no actual semantics changed, my > version doesn't have the dget_parent() lockless update code, for > example. I literally just did a search-and-replace of "->d_count" with > "->d_lockref.count" and then I fixed up a few things by hand (undid > one replacement in a comment, and used the helper functions where they > were semantically identical). > > You don't have to rewrite your patches if you don't want to, I'm > planning on cherry-picking the actual code changes during the merge > window. I've somewhat lost track of this, will I need some arch support for powerpc ? Cheers, Ben. -- 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/