Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761284AbZCSWQo (ORCPT ); Thu, 19 Mar 2009 18:16:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756163AbZCSWQf (ORCPT ); Thu, 19 Mar 2009 18:16:35 -0400 Received: from cantor2.suse.de ([195.135.220.15]:36525 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756174AbZCSWQf (ORCPT ); Thu, 19 Mar 2009 18:16:35 -0400 Date: Thu, 19 Mar 2009 23:16:29 +0100 From: Jan Kara To: Linus Torvalds Cc: Nick Piggin , Ying Han , Andrew Morton , linux-kernel , linux-mm , guichaz@gmail.com, Alex Khesin , Mike Waychison , Rohit Seth , Peter Zijlstra Subject: Re: ftruncate-mmap: pages are lost after writing to mmaped file. Message-ID: <20090319221629.GA8687@duck.suse.cz> References: <604427e00903181244w360c5519k9179d5c3e5cd6ab3@mail.gmail.com> <200903200248.22623.nickpiggin@yahoo.com.au> <200903200334.55710.nickpiggin@yahoo.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1192 Lines: 33 On Thu 19-03-09 13:21:28, Linus Torvalds wrote: > > > On Thu, 19 Mar 2009, Linus Torvalds wrote: > > > > Ahh, so you re-created it? On ext2 only, or is it visible on ext3 as well? > > I've not even tested - I assumed that I would have to boot into less > > memory and downgrade my filesystem to ext2, which made me hope somebody > > else would pick it up first ;) > > Oh, btw, can people who see this (Ying Han, Nick and apparently Jan) > detail their configurations, please? In particular I'm able to see it only under UML. I've tried to reproduce under normal machine but without luck. My system is single CPU Athlon64. > - SMP? (CONFIG_SMP and how many cores do you have if so?) > > - PREEMPT (NONE/VOLUNTARY or full preempt?) Above two don't exist in UML, but I assume UML behaves basically like full preempt SMP... > - RCU (CLASSIC/TREE/PREEMPT?) RCU is CLASSIC. Honza -- Jan Kara SUSE Labs, CR -- 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/