Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755561Ab0AEUaW (ORCPT ); Tue, 5 Jan 2010 15:30:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754505Ab0AEUaV (ORCPT ); Tue, 5 Jan 2010 15:30:21 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:46884 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755281Ab0AEUaU (ORCPT ); Tue, 5 Jan 2010 15:30:20 -0500 Subject: Re: [RFC][PATCH 6/8] mm: handle_speculative_fault() From: Peter Zijlstra To: Linus Torvalds Cc: Christoph Lameter , Andi Kleen , KAMEZAWA Hiroyuki , Minchan Kim , "Paul E. McKenney" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "hugh.dickins" , Nick Piggin , Ingo Molnar In-Reply-To: References: <20100104182429.833180340@chello.nl> <20100104182813.753545361@chello.nl> <20100105092559.1de8b613.kamezawa.hiroyu@jp.fujitsu.com> <28c262361001042029w4b95f226lf54a3ed6a4291a3b@mail.gmail.com> <20100105134357.4bfb4951.kamezawa.hiroyu@jp.fujitsu.com> <20100105143046.73938ea2.kamezawa.hiroyu@jp.fujitsu.com> <20100105163939.a3f146fb.kamezawa.hiroyu@jp.fujitsu.com> <87wrzwbh0z.fsf@basil.nowhere.org> Content-Type: text/plain; charset="UTF-8" Date: Tue, 05 Jan 2010 21:29:16 +0100 Message-ID: <1262723356.4049.11.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 559 Lines: 13 On Tue, 2010-01-05 at 10:25 -0800, Linus Torvalds wrote: > The readers are all hitting the > lock (and you can try to solve the O(n*2) issue with back-off, but quite > frankly, anybody who does that has basically already lost /me sneaks in a reference to local spinning spinlocks just to have them mentioned. -- 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/