Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265271AbUFHRFb (ORCPT ); Tue, 8 Jun 2004 13:05:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265274AbUFHRFa (ORCPT ); Tue, 8 Jun 2004 13:05:30 -0400 Received: from mx1.redhat.com ([66.187.233.31]:49633 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S265271AbUFHRFT (ORCPT ); Tue, 8 Jun 2004 13:05:19 -0400 From: David Howells In-Reply-To: <20040608154438.GK18083@dualathlon.random> References: <20040608154438.GK18083@dualathlon.random> To: Andrea Arcangeli Cc: Andrew Morton , Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: downgrade_write replacement in remap_file_pages User-Agent: EMH/1.14.1 SEMI/1.14.5 (Awara-Onsen) FLIM/1.14.5 (Demachiyanagi) APEL/10.6 Emacs/21.3 (i386-redhat-linux-gnu) MULE/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Date: Tue, 08 Jun 2004 18:05:08 +0100 Message-ID: <20586.1086714308@redhat.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 534 Lines: 17 > Apparently downgrade_write deadlocks the kernel in the mmap_sem > under load. Which implementation of rwsems is your kernel using? The spinlock-based one or the XADD based one? Have you tried the other version? Have you more than 32767 processes? Do you have any stack traces? David - 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/