From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14304C76186 for ; Tue, 23 Jul 2019 03:48:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD57221E70 for ; Tue, 23 Jul 2019 03:48:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730880AbfGWDsS (ORCPT ); Mon, 22 Jul 2019 23:48:18 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:53630 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728233AbfGWDsR (ORCPT ); Mon, 22 Jul 2019 23:48:17 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 7C5FD15310D42; Mon, 22 Jul 2019 20:48:17 -0700 (PDT) Date: Mon, 22 Jul 2019 20:48:16 -0700 (PDT) Message-Id: <20190722.204816.2069765912912670206.davem@davemloft.net> To: willy@infradead.org Cc: hch@lst.de, netdev@vger.kernel.org Subject: Re: [PATCH v3 0/7] Convert skb_frag_t to bio_vec From: David Miller In-Reply-To: <20190723030831.11879-1-willy@infradead.org> References: <20190723030831.11879-1-willy@infradead.org> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 22 Jul 2019 20:48:17 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Matthew Wilcox Date: Mon, 22 Jul 2019 20:08:24 -0700 > From: "Matthew Wilcox (Oracle)" > > The skb_frag_t and bio_vec are fundamentally the same (page, offset, > length) tuple. This patch series unifies the two, leaving the > skb_frag_t typedef in place. This has the immediate advantage that > we already have iov_iter support for bvecs and don't need to add > support for iterating skbuffs. It enables a long-term plan to use > bvecs more broadly within the kernel and should make network-storage > drivers able to do less work converting between skbuffs and biovecs. > > It will consume more memory on 32-bit kernels. If that proves > problematic, we can look at ways of addressing it. > > v3: Rebase on latest Linus with net-next merged. > - Reorder the uncontroversial 'Use skb accessors' patches first so you > can apply just those two if you want to hold off on the full > conversion. > - Convert all the users of 'struct skb_frag_struct' to skb_frag_t. Series applied, will push out to net-next after build testing. Thanks.