From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937018AbXGMTAn (ORCPT ); Fri, 13 Jul 2007 15:00:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759791AbXGMTAg (ORCPT ); Fri, 13 Jul 2007 15:00:36 -0400 Received: from 41-052.adsl.zetnet.co.uk ([194.247.41.52]:52962 "EHLO mail.esperi.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756939AbXGMTAf (ORCPT ); Fri, 13 Jul 2007 15:00:35 -0400 To: Jeff Dike Cc: Andrew Morton , LKML , uml-devel Subject: Re: [PATCH 2/3] UML - Limit request size on COWed devices References: <20070713143755.GA6244@c2.user-mode-linux.org> From: Nix Emacs: Our Lady of Perpetual Garbage Collection Date: Fri, 13 Jul 2007 20:00:13 +0100 In-Reply-To: <20070713143755.GA6244@c2.user-mode-linux.org> (Jeff Dike's message of "Fri, 13 Jul 2007 10:37:55 -0400") Message-ID: <87odigw2ma.fsf@hades.wkstn.nix> User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.5-b27 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-DCC-CTc-dcc2-Metrics: hades 1031; Body=4 Fuz1=4 Fuz2=4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 13 Jul 2007, Jeff Dike uttered the following: > COWed devices can't handle more than 32 (64 on x86_64) sectors in one > request due to the size of the bitmap being carried around in the > io_thread_req. This feels like a -stable candidate to me.