Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751813AbaJ0HxN (ORCPT ); Mon, 27 Oct 2014 03:53:13 -0400 Received: from lgeamrelo01.lge.com ([156.147.1.125]:39585 "EHLO lgeamrelo01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751024AbaJ0HxM (ORCPT ); Mon, 27 Oct 2014 03:53:12 -0400 X-Original-SENDERIP: 10.177.222.213 X-Original-MAILFROM: iamjoonsoo.kim@lge.com Date: Mon, 27 Oct 2014 16:54:26 +0900 From: Joonsoo Kim To: Christoph Lameter Cc: akpm@linuxfoundation.org, rostedt@goodmis.org, linux-kernel@vger.kernel.org, Thomas Gleixner , linux-mm@kvack.org, penberg@kernel.org, iamjoonsoo@lge.com Subject: Re: [RFC 0/4] [RFC] slub: Fastpath optimization (especially for RT) Message-ID: <20141027075426.GE23379@js1304-P5Q-DELUXE> References: <20141022155517.560385718@linux.com> <20141023080942.GA7598@js1304-P5Q-DELUXE> <20141024045630.GD15243@js1304-P5Q-DELUXE> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 24, 2014 at 09:02:18AM -0500, Christoph Lameter wrote: > On Fri, 24 Oct 2014, Joonsoo Kim wrote: > > > In this case, object from cpu1's cpu_cache should be > > different with cpu0's, so allocation would be failed. > > That is true for most object pointers unless the value is NULL. Which it > can be. But if this is the only case then the second patch + your approach > would work too. Indeed... I missed the null value case. Your second patch + mine would fix that situation, but, I need more thinking. :) Thanks. -- 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/