Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756110AbYJMGnq (ORCPT ); Mon, 13 Oct 2008 02:43:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753058AbYJMGni (ORCPT ); Mon, 13 Oct 2008 02:43:38 -0400 Received: from hera.kernel.org ([140.211.167.34]:37475 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753010AbYJMGnh (ORCPT ); Mon, 13 Oct 2008 02:43:37 -0400 Message-ID: <48F2ED9F.7020606@kernel.org> Date: Mon, 13 Oct 2008 15:41:35 +0900 From: Tejun Heo User-Agent: Thunderbird 2.0.0.16 (X11/20080720) MIME-Version: 1.0 To: Jens Axboe CC: Ingo Molnar , Linus Torvalds , linux-kernel@vger.kernel.org, Andrew Morton , Thomas Gleixner , "H. Peter Anvin" , Yinghai Lu Subject: [PATCH] block: add BIG FAT WARNING to CONFIG_DEBUG_BLOCK_EXT_DEVT References: <20081010203043.GA11798@elte.hu> <20081010204015.GA15668@elte.hu> <20081010205642.GA28840@elte.hu> <48EFF84B.5060108@kernel.org> <20081011071939.GA26465@elte.hu> <20081011140826.GS19428@kernel.dk> <20081011143355.GA6274@elte.hu> <20081011143947.GT19428@kernel.dk> <20081011145823.GA14062@elte.hu> <20081011175818.GY19428@kernel.dk> In-Reply-To: <20081011175818.GY19428@kernel.dk> X-Enigmail-Version: 0.95.7 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]); Mon, 13 Oct 2008 06:43:04 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1229 Lines: 32 CONFIG_DEBUG_BLOCK_EXT_DEVT can break booting even on some modern distros. Add BIG FAT WARNING to keep people at a safe distance. Signed-off-by: Tejun Heo --- Okay, w/ or w/o Ingo's change, it would be worthwhile to warn people more clearly so that we can at least say 'told ya'. :-) lib/Kconfig.debug | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index aa81d28..44e67a1 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -652,6 +652,11 @@ config DEBUG_BLOCK_EXT_DEVT depends on BLOCK default n help + BIG FAT WARNING: ENABLING THIS OPTION MIGHT BREAK BOOTING ON + SOME DISTRIBUTIONS. DO NOT ENABLE THIS UNLESS YOU KNOW WHAT + YOU ARE DOING. Distros, please enable this and fix whatever + is broken. + Conventionally, block device numbers are allocated from predetermined contiguous area. However, extended block area may introduce non-contiguous block device numbers. This -- 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/