From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id E137F6B003D for ; Thu, 19 Mar 2009 16:27:36 -0400 (EDT) Date: Thu, 19 Mar 2009 13:21:28 -0700 (PDT) From: Linus Torvalds Subject: Re: ftruncate-mmap: pages are lost after writing to mmaped file. In-Reply-To: Message-ID: 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 Sender: owner-linux-mm@kvack.org To: Nick Piggin Cc: Ying Han , Jan Kara , Andrew Morton , linux-kernel , linux-mm , guichaz@gmail.com, Alex Khesin , Mike Waychison , Rohit Seth , Peter Zijlstra List-ID: 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 - SMP? (CONFIG_SMP and how many cores do you have if so?) - PREEMPT (NONE/VOLUNTARY or full preempt?) - RCU (CLASSIC/TREE/PREEMPT?) since those affect the kinds of races we can see a lot. Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org