Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264105AbTE0T5s (ORCPT ); Tue, 27 May 2003 15:57:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264107AbTE0T5r (ORCPT ); Tue, 27 May 2003 15:57:47 -0400 Received: from perninha.conectiva.com.br ([200.250.58.156]:25763 "EHLO perninha.conectiva.com.br") by vger.kernel.org with ESMTP id S264105AbTE0T5Y (ORCPT ); Tue, 27 May 2003 15:57:24 -0400 Date: Tue, 27 May 2003 17:08:38 -0300 (BRT) From: Marcelo Tosatti X-X-Sender: marcelo@freak.distro.conectiva To: Andrea Arcangeli Cc: Marc-Christian Petersen , linux-kernel@vger.kernel.org, Carl-Daniel Hailfinger , manish , Christian Klose , William Lee Irwin III Subject: Re: 2.4.20: Proccess stuck in __lock_page ... In-Reply-To: <20030527200339.GI3767@dualathlon.random> Message-ID: References: <3ED2DE86.2070406@storadinc.com> <200305271952.34843.m.c.p@wolk-project.de> <200305272004.02376.m.c.p@wolk-project.de> <20030527182547.GG3767@dualathlon.random> <20030527200339.GI3767@dualathlon.random> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1284 Lines: 32 On Tue, 27 May 2003, Andrea Arcangeli wrote: > > It seems your "fix-pausing" patch is fixing a potential wakeup > > miss, right? (I looked quickly throught it). Could you explain me the > > yes, not just one but multiple of them, all similar. lots of boxes were > hanging in a weird manner until I found and fixed this glitch. > > > problem its trying to fix and how? > > I'm attaching the old email, it should have all the explanataions. > > but don't use that old patch (that was the first revision and it missed > one last race in wait_for_request noticed by Chris or Andrew [or > both?]), use this one instead (seems just the second revision, should be > that one plus that last race fix): > > http://www.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.21rc2aa1/9980_fix-pausing-2 I wonder if the additional wakeups result in performance degradation (not that it matters much in case there is no other way to fix the problem). But anyway I would like to have some numbers with/without the patch. Do you have them ? - 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/