Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755216AbYAHUC3 (ORCPT ); Tue, 8 Jan 2008 15:02:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753047AbYAHUCV (ORCPT ); Tue, 8 Jan 2008 15:02:21 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:55676 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753011AbYAHUCU (ORCPT ); Tue, 8 Jan 2008 15:02:20 -0500 Date: Tue, 8 Jan 2008 21:01:43 +0100 From: Ingo Molnar To: Linus Torvalds Cc: Stefan Richter , Matthew Wilcox , Valdis.Kletnieks@vt.edu, Willy Tarreau , Adrian Bunk , James Bottomley , Peter Osterlund , linux-kernel@vger.kernel.org, Andrew Morton , Al Viro Subject: Re: [patch] scsi: revert "[SCSI] Get rid of scsi_cmnd->done" Message-ID: <20080108200143.GA23607@elte.hu> References: <20080106185625.GM2082@does.not.exist> <20080106191044.GA1105@1wt.eu> <20080106195802.GN2082@does.not.exist> <20080106210813.GA10136@1wt.eu> <19438.1199739038@turing-police.cc.vt.edu> <20080107213717.GB16309@parisc-linux.org> <26581.1199747065@turing-police.cc.vt.edu> <20080107231930.GC16309@parisc-linux.org> <4783A904.9030705@s5r6.in-berlin.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1077 Lines: 25 * Linus Torvalds wrote: > These things *are* fairly rare (most bugs by _far_ are of the trivial > stupid kind), but some of those things can stay around for a long > time, and it can take months of different people reporting similar > problems until somebody finally puts two and two together and sees the > pattern. one common pattern i've noticed is bug dependency. In some areas we need to fix a series of 2-3 increasingly less trivial bugs to get enough test exposure, tester confidence and developer attention to trigger (and fix) the _truly_ bad bugs. That's why agressive regression elimination (and prevention) is so important IMHO - trivial regressions can totally block testing of certain areas of code, and with an agressive 90 days release schedule every day counts. Ingo -- 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/