Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752060Ab0D1NhX (ORCPT ); Wed, 28 Apr 2010 09:37:23 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:53135 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750859Ab0D1NhV (ORCPT ); Wed, 28 Apr 2010 09:37:21 -0400 Date: Wed, 28 Apr 2010 15:37:02 +0200 From: Ingo Molnar To: Frederic Weisbecker Cc: Arnd Bergmann , Linus Torvalds , LKML , Thomas Gleixner , Al Viro , Jan Blunck , John Kacur Subject: Re: [GIT PULL v2] Preparation for BKL'ed ioctl removal Message-ID: <20100428133702.GA3193@elte.hu> References: <1271390201-20431-1-git-send-regression-fweisbec@gmail.com> <20100425173912.GA5375@nowhere> <20100426072541.GA25961@elte.hu> <201004261329.28427.arnd@arndb.de> <20100427092530.GD11348@elte.hu> <20100428132112.GC12017@nowhere> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100428132112.GC12017@nowhere> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 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: 1141 Lines: 27 * Frederic Weisbecker wrote: > [...] > > That said, once we reach that point with 4 users of bkl remaining, may be > that will be time to buy such hardware for a symbolic $1 in obscure places > and do the tests. Or just git-rm if we are too lazy. Precisely. Note that the actual value of BKL-covered code shrinks every time we push the BKL out of commonly used code. So even if there's still usage sites around, there will be a point where it makes sense to just desupport it or do a final, crude conversion. If there are no active users who are willing to help us debug potential bugs then there's frankly no value in us being just as careful with those drivers as we are with other, more commonly used code. For the rest, lockdep & softlockup detector will be plenty enough to debug any bugs that may slip through - just like you did it with ReiserFS. 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/