From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965051AbXD3D6z (ORCPT ); Sun, 29 Apr 2007 23:58:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965085AbXD3D6y (ORCPT ); Sun, 29 Apr 2007 23:58:54 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:51377 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965051AbXD3D6x (ORCPT ); Sun, 29 Apr 2007 23:58:53 -0400 Date: Mon, 30 Apr 2007 13:58:38 +1000 From: David Chinner To: Zan Lynx Cc: Adrian Bunk , Linux Kernel Subject: Re: [-mm patch] i386: enable 4k stacks by default Message-ID: <20070430035838.GC77450368@melbourne.sgi.com> References: <20070428191927.GN3468@stusta.de> <1177795118.7828.6.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1177795118.7828.6.camel@localhost> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Apr 28, 2007 at 03:18:38PM -0600, Zan Lynx wrote: > On Sat, 2007-04-28 at 21:19 +0200, Adrian Bunk wrote: > > 4k stacks have become a well-tested feature used fore a long time in > > Fedora and even in RHEL 4. > > So has anyone fixed the bugs involving ext3 and LVM snapshots on top of > DM mirror? I doubt it. Every time this comes up the problem of stacked I/O configuration being able to reliably blow the 4k stack limit comes up. Usually it's XFS that is blamed, but it seems ext3 and reiser can both suffer from the same problem. And now we can add things like unionfs/ecryptfs into the stack as well.... Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group