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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0047CC7619A for ; Sun, 2 Apr 2023 14:56:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230484AbjDBO4z (ORCPT ); Sun, 2 Apr 2023 10:56:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230462AbjDBO4x (ORCPT ); Sun, 2 Apr 2023 10:56:53 -0400 Received: from mail-qv1-xf2f.google.com (mail-qv1-xf2f.google.com [IPv6:2607:f8b0:4864:20::f2f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B65007295; Sun, 2 Apr 2023 07:56:52 -0700 (PDT) Received: by mail-qv1-xf2f.google.com with SMTP id k12so690049qvo.13; Sun, 02 Apr 2023 07:56:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1680447412; x=1683039412; h=content-transfer-encoding:mime-version:subject:references :in-reply-to:message-id:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=atds8gSClqlNHaxVTY/u8jWQRo/FCkzxGm1dMixJaaM=; b=B/By7XhjU69AY0lqHx25qllp0doybNw50wUiGKlqOp010V9jcCzstlJZiVKM8a5lyU 5gv75rX9n0NSqTu3b2k/FoQLZi1j8BjfiD69pzhdPSOwAau+JYwlPWAuKiePY+EoO/dV hheJK+8ZD9CcKKPa/0LnI3fVDfy9nq8tkX/ZzYZrrSdR+ui1PkzTWvtEabpt2wg/ba9X poR9Hsf2rYQM0yMWnpaYXTgLCjLb/6tkPrmBkNU5YJPgvdgx50whJR1udUbGkE4RFOvc gMSC61tu6eezoJY0zWVh4pn/3OIU/vL2cArywyxMk/P1wml+3m8YF2fjKdQrXzuSxmTr 5+BA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680447412; x=1683039412; h=content-transfer-encoding:mime-version:subject:references :in-reply-to:message-id:cc:to:from:date:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=atds8gSClqlNHaxVTY/u8jWQRo/FCkzxGm1dMixJaaM=; b=lUHVOkSzjoBobtpu1Hcbh/23uFUtgAuvi9+QTCT+um9c3oBHrRKPBENmtuQmk2IZ3l y8OZr+AOFIw7Y/jTrjIS4kJgAzKrfYgaRv488YOHbKr4IYX/ZtYZaWxvZNph0T1Im2uc oP7EWz4Pgz75aO/Rkm1LWmODqgVQ5dzqSQpiSni+30Ae4yCtsGVdOAnXwrwkve+893FJ ha/MdWJ31joDtjYKNCMrT1iwGuHoeFP6mxEY9VaNaZ4Rz3fpoigfG7TTgHnvfmKCrrJs 1rT7pymxuSjkDE13NitPoNZ23DQkpUgxO5C80M23sgc9YPgiFsVm9+3B6TG+M04/NJFi yVzw== X-Gm-Message-State: AAQBX9cjo63LB8FhCtXRTM5pS+EG47XdtkTop4Pv3nWX0Ubt2cnuHWzt jIXAVfClwvmu3wURHYMobkY= X-Google-Smtp-Source: AKy350a4rkwDBTQMVluJtKUgqOxCwrYsf5coqfb0RWcqcMAYP5IbUbp///HoN0WpAm/c1TL6UVdubA== X-Received: by 2002:ad4:5b87:0:b0:5a5:f1eb:fc67 with SMTP id 7-20020ad45b87000000b005a5f1ebfc67mr49357634qvp.52.1680447411816; Sun, 02 Apr 2023 07:56:51 -0700 (PDT) Received: from localhost (240.157.150.34.bc.googleusercontent.com. [34.150.157.240]) by smtp.gmail.com with ESMTPSA id x23-20020a05620a0b5700b00746b79101b6sm2080331qkg.67.2023.04.02.07.56.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Apr 2023 07:56:51 -0700 (PDT) Date: Sun, 02 Apr 2023 10:56:51 -0400 From: Willem de Bruijn To: David Howells , Matthew Wilcox , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: David Howells , Al Viro , Christoph Hellwig , Jens Axboe , Jeff Layton , Christian Brauner , Chuck Lever III , Linus Torvalds , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Willem de Bruijn Message-ID: <642997b31bf8f_2d2a202088e@willemb.c.googlers.com.notmuch> In-Reply-To: <20230331160914.1608208-4-dhowells@redhat.com> References: <20230331160914.1608208-1-dhowells@redhat.com> <20230331160914.1608208-4-dhowells@redhat.com> Subject: RE: [PATCH v3 03/55] net: Declare MSG_SPLICE_PAGES internal sendmsg() flag Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org David Howells wrote: > Declare MSG_SPLICE_PAGES, an internal sendmsg() flag, that hints to a > network protocol that it should splice pages from the source iterator > rather than copying the data if it can. This flag is added to a list that > is cleared by sendmsg and recvmsg syscalls on entry. nit: comment not longer matches implementation: recvmsg > This is intended as a replacement for the ->sendpage() op, allowing a way > to splice in several multipage folios in one go. > > Signed-off-by: David Howells > cc: Willem de Bruijn > cc: "David S. Miller" > cc: Eric Dumazet > cc: Jakub Kicinski > cc: Paolo Abeni > cc: Jens Axboe > cc: Matthew Wilcox > cc: netdev@vger.kernel.org Aside from that Reviewed-by: Willem de Bruijn