Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756462AbYJKAww (ORCPT ); Fri, 10 Oct 2008 20:52:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754198AbYJKAwn (ORCPT ); Fri, 10 Oct 2008 20:52:43 -0400 Received: from hera.kernel.org ([140.211.167.34]:57439 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754162AbYJKAwm (ORCPT ); Fri, 10 Oct 2008 20:52:42 -0400 Message-ID: <48EFF84B.5060108@kernel.org> Date: Sat, 11 Oct 2008 09:50:19 +0900 From: Tejun Heo User-Agent: Thunderbird 2.0.0.12 (X11/20071114) MIME-Version: 1.0 To: Linus Torvalds CC: Ingo Molnar , linux-kernel@vger.kernel.org, Andrew Morton , Jens Axboe , Thomas Gleixner , "H. Peter Anvin" , Yinghai Lu Subject: Re: [bug] latest -git boot hang References: <20081010203043.GA11798@elte.hu> <20081010204015.GA15668@elte.hu> <20081010205642.GA28840@elte.hu> In-Reply-To: X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Sat, 11 Oct 2008 00:52:12 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1531 Lines: 45 Hello, Linus Torvalds wrote: > On Fri, 10 Oct 2008, Ingo Molnar wrote: >> | 870d6656126add8e383645732b03df2b7ccd4f94 is first bad commit >> | commit 870d6656126add8e383645732b03df2b7ccd4f94 >> | Author: Tejun Heo >> | Date: Mon Aug 25 19:47:25 2008 +0900 >> | >> | block: implement CONFIG_DEBUG_BLOCK_EXT_DEVT >> >> and meanwhile 2 other test-systems failed to boot as well - both have >> CONFIG_DEBUG_BLOCK_EXT_DEVT=y. >> >> So i guess this debug feature is working as expected. > > Ahh, yeah, sounds that way. > >> I guess we should mark CONFIG_DEBUG_BLOCK_EXT_DEVT=y as really dangerous >> to enable because contemporary distributions (i tried Fedora 9) fail >> with it too? > > Tejun - do you know whether _any_ distro will boot with > CONFIG_DEBUG_BLOCK_EXT_DEVT=y? Hmmm... openSUSE 11.0 didn't have any problem with it, which I was a bit pleasantly surprised about. I haven't tested management tools but the base system worked just fine. > It does sound like perhaps the option should be hidden more, if it's > really only reasonably enabled for some very specialized distro debuggers, > not normal kernel people. Yeap, if fedora didn't work, I think it should be hidden. Do we already have place to hide things like this? Thanks. -- tejun -- 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/