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[2620:137:e000::1:20]) by mx.google.com with ESMTP id t17-20020a056402021100b004599ae68f98si10834058edv.136.2022.10.18.12.06.24; Tue, 18 Oct 2022 12:07:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=mLD0ZmLM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230161AbiJRSdP (ORCPT + 99 others); Tue, 18 Oct 2022 14:33:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230131AbiJRSdN (ORCPT ); Tue, 18 Oct 2022 14:33:13 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F5F99A29A; Tue, 18 Oct 2022 11:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=TE0o9ct148mf7iAtxZG4Y88MlcY2NeqbmBgT+PQtIW0=; b=mLD0ZmLMRmP3xJQu10Yb0dKYxL XwFs5iPOZo6AcGRxsrvzrjrHyDDcyz+8E9VBsGTzyorVjFWrXaULl5isXGvGy4U3RGx14TlmL+SiV Bhsj6YExynDJcCxiOJilDPxcPFQh04VtDYWjmghVzWBvRmVJCjKDZxJLnF6Nut32La4piJ0GvBL2T GHTQbLAogdJ7vKDnCxuzIg7xGCyt5TxSQSAWDYji1umlnH45AKwVmJ+I//6e79SqWNuGF93a1QDFf 2rLGSDpysWG5RXb57tlkZUm7HQ2a+qiPfy8gDiwbgEHQ0QGiwN7iwRKuhHAKkWAhVtiMCyoCSPHbQ h1s7UqjQ==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1okrOi-009vzl-0P; Tue, 18 Oct 2022 18:33:04 +0000 Date: Tue, 18 Oct 2022 11:33:03 -0700 From: Luis Chamberlain To: Petr Pavlu , Prarit Bhargava Cc: pmladek@suse.com, linux-modules@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] module: Merge same-name module load requests Message-ID: References: <20220919123233.8538-1-petr.pavlu@suse.com> <20220919123233.8538-3-petr.pavlu@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Luis Chamberlain X-Spam-Status: No, score=-4.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 15, 2022 at 11:27:10AM +0200, Petr Pavlu wrote: > The patch does address a regression observed after commit 6e6de3dee51a > ("kernel/module.c: Only return -EEXIST for modules that have finished > loading"). I guess it can have a Fixes tag added to the patch. > > I think it is hard to split this patch into parts because the implemented > "optimization" is the fix. git describe --contains 6e6de3dee51a v5.3-rc1~38^2~6 I'm a bit torn about this situation. Reverting 6e6de3dee51a would be the right thing to do, but without it, it still leaves the issue reported by Prarit Bhargava. We need a way to resolve the issue on stable and then your optimizations can be applied on top. Prarit Bhargava, please review Petry's work and see if you can come up with a sensible way to address this for stable. Luis