From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760293AbYDDT5S (ORCPT ); Fri, 4 Apr 2008 15:57:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756796AbYDDT5I (ORCPT ); Fri, 4 Apr 2008 15:57:08 -0400 Received: from www.tglx.de ([62.245.132.106]:49448 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757075AbYDDT5H (ORCPT ); Fri, 4 Apr 2008 15:57:07 -0400 Date: Fri, 4 Apr 2008 21:56:35 +0200 (CEST) From: Thomas Gleixner To: Peter Zijlstra cc: Nick Piggin , Eric Dumazet , Ingo Molnar , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC PATCH 0/2] fast_gup for shared futexes In-Reply-To: <20080404193332.348493000@chello.nl> Message-ID: References: <20080404193332.348493000@chello.nl> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 4 Apr 2008, Peter Zijlstra wrote: > Hi, > > this patch series removes mmap_sem from the fast path of shared futexes by > making use of Nick's recent fast_gup() patches. Full series at: > > http://programming.kicks-ass.net/kernel-patches/futex-fast_gup/v2.6.24.4-rt4/ Looks good at the first glance. Need to look at the corner cases, but the code does not really depend on mmap_sem anymore so the chance that it blows up is pretty low. Thanks, tglx