Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A496C636D3 for ; Mon, 6 Feb 2023 05:17:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229447AbjBFFRM (ORCPT ); Mon, 6 Feb 2023 00:17:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbjBFFRJ (ORCPT ); Mon, 6 Feb 2023 00:17:09 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 503D7EB68; Sun, 5 Feb 2023 21:17:08 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CB89860C77; Mon, 6 Feb 2023 05:17:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EF63C433D2; Mon, 6 Feb 2023 05:17:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675660627; bh=IOaVM/sUdZ4EOC4ES3KNjUSwD0PavkGrsos3VJBn+uw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ggd0HV9GyaNAjGCVVShKOLR6wV2owadaL1D+vgTGWu5ebIby/+Z+bP0svkY6aqQhD OQQP2kvQUvnQg8y/R2dTqeyuY0zlLcoUgLq94SBTrNL6nxCDJwcWu3u+Xt2wELzE8a vRxfELVHJCjLKSLwLBjnauPdJuCoaiiD/B6Uo2Mw= Date: Mon, 6 Feb 2023 06:17:03 +0100 From: Greg Kroah-Hartman To: Hillf Danton Cc: Alan Stern , Tetsuo Handa , "Rafael J. Wysocki" , linux-mm@kvack.org, LKML , USB list , Linus Torvalds Subject: Re: Converting dev->mutex into dev->spinlock ? Message-ID: References: <28a82f50-39d5-a45f-7c7a-57a66cec0741@I-love.SAKURA.ne.jp> <917e1e3b-094f-e594-c1a2-8b97fb5195fd@I-love.SAKURA.ne.jp> <20230206025629.1786-1-hdanton@sina.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230206025629.1786-1-hdanton@sina.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 06, 2023 at 10:56:29AM +0800, Hillf Danton wrote: > On Sun, 5 Feb 2023 11:46:06 -0500 Alan Stern > > > > And by the way, by disabling lockdep validation I am declaraing that > > enabling it would cause an overwhelming number of false positives, > > Could you share 5 false positives you see upstream to help understand how > it is useless? Please see this other email in this thread: https://lore.kernel.org/r/Y98FLlr7jkiFlV0k@rowland.harvard.edu