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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id n18-20020a17090aab9200b001e2e762b21csi3016543pjq.20.2022.06.01.12.54.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jun 2022 12:54:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=qpAnrVzA; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5ABB120C6C5; Wed, 1 Jun 2022 12:15:48 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244133AbiEaGEf (ORCPT + 99 others); Tue, 31 May 2022 02:04:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238360AbiEaGEd (ORCPT ); Tue, 31 May 2022 02:04:33 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6215A915BE; Mon, 30 May 2022 23:04:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=3CbF3u5gxI6nZsA0r6n4BrV1CPCofWtVl71+qUSAels=; b=qpAnrVzAgPZagunlQwv8l4h7wd 2C5im6O+hHfn/TgEOmHVVP9OcuvueyToIsWpd+12VpgdJH7Ycz0Qj8Twm9iHtQQFpTqoOOkpEbSCd 109aMzYNZRTbe/3bQZDNfEi3rRF2SqtSNWdQxdRLrWzWkG/Xq+uSqCvXSkHeAw9o3eBC3xpfIRnuc kiVcpoj82nAbXJHmAA07y7uVK1wJIhfh3SlH7DVXBlXT6fiAt1VBJJdyVQkZzXZtsYN5Wt/yucptF 7ojaVgA3ql83Ey/tgbq2EI23KHcQ16zScKSzB+WWs8O8bmEX4/zFef4JzuOcAWhjkX4wqFwxvFu+L GqJQ81lA==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvuzY-009UJb-7m; Tue, 31 May 2022 06:04:32 +0000 Date: Mon, 30 May 2022 23:04:32 -0700 From: Christoph Hellwig To: Joe Damato Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Subject: Re: [RFC,net-next,x86 0/6] Nontemporal copies in unix socket write path Message-ID: References: <1652241268-46732-1-git-send-email-jdamato@fastly.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1652241268-46732-1-git-send-email-jdamato@fastly.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no 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 From the iov_iter point of view: please follow the way how the inatomic nocache helpers are implemented instead of adding costly funtion pointers.