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=-11.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 D2170C433DF for ; Mon, 3 Aug 2020 23:02:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E53D220781 for ; Mon, 3 Aug 2020 23:02:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="WvzRhMuo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729181AbgHCXCP (ORCPT ); Mon, 3 Aug 2020 19:02:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728421AbgHCXCO (ORCPT ); Mon, 3 Aug 2020 19:02:14 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16428C061756 for ; Mon, 3 Aug 2020 16:02:14 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id o5so3034740pgb.2 for ; Mon, 03 Aug 2020 16:02:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=to:cc:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=V/+z/hxKFgTteJODvKkcx/ojBZuakxz0j5YHjVIKU/I=; b=WvzRhMuo+Bhq3EFBZdXi/SgHsTe8rpKDUkQkc9iu++WXSNIDqmVy3dDn8sRLN7T/eO I5z/tJlNF/CoQPYbXeY4zyQgcBzx/NK7gKR3VSmsCWbt4a63wjrorNpU5oK7/o9EZOb7 GbPlkTi5doGkvngQDeNHiK7aW320dZCIeL6HC7a4lnD8VLxmcvn2u4EPPsXE6V8IUM3m rPVkbrqrwSUqWpNEvZvM+Kf+klqLwtyeqrppMj6Cn+IIGyxakTB42svkyBYmfeLCtMtf tqEgDHKaHqyaEZ2+YlffH0DefvxZ20+vvWxiUoEvuAKYotl5pPF6eEfaTbizpQyCOlUy 97SQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=V/+z/hxKFgTteJODvKkcx/ojBZuakxz0j5YHjVIKU/I=; b=fiO3xpeTXtMIAvyxUsC4TO1dmaVXbyiBZMuXEXmM0KtD/NL4AckCMVL4CpAIlHfC0R YRgrWzUTMfFLTlmvASzSjz4fNxlkIHxPgSFtzF91Qgl9v08Fgw5sLDndIfqxNsGYb6ql n5xajHnKd+XpJj+1JZBJKTvlWxC2p5AC+ep5BzzPaYeNw90z0iHF4ooOWugL9w0pQ+nH ekeMj2B2XHd9mKVv8+wKlXYbK04JP2O7LlTPmjb1eeIeAyDs8o2tnsTvDgWgLyRKy5n+ KDT/aon7GA0JKJ4oONN2kCO7c4liV9VvOsKfXBd2jp6YPt/jzSB0kiQJoJKRDYi+q3LN afAQ== X-Gm-Message-State: AOAM531jcuhs/2nyeVA8U1PFa8sRBxtEcSHuWnlGjK+RefkzaZesjOXd 7qR2UlOpke0nSEF6F9/q9X0A1j5Pe7U= X-Google-Smtp-Source: ABdhPJxYaNOzfp7Coaq7/S3GFzQRaWKpMjthMCF1MVEAbgu6MXquqj4sTaj7nUYP30nuW+UakDmt1Q== X-Received: by 2002:a65:438c:: with SMTP id m12mr16411217pgp.373.1596495733364; Mon, 03 Aug 2020 16:02:13 -0700 (PDT) Received: from [192.168.1.182] ([66.219.217.173]) by smtp.gmail.com with ESMTPSA id r185sm21403864pfr.8.2020.08.03.16.02.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Aug 2020 16:02:12 -0700 (PDT) To: Theodore Ts'o Cc: linux-ext4@vger.kernel.org, "linux-kernel@vger.kernel.org" From: Jens Axboe Subject: [PATCH] ext4: flag as supporting buffered async reads Message-ID: Date: Mon, 3 Aug 2020 17:02:11 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ext4 uses generic_file_read_iter(), which already supports this. Cc: Theodore Ts'o Signed-off-by: Jens Axboe --- Resending this one, as I've been carrying it privately since May. The necessary bits are now upstream (and XFS/btrfs equiv changes as well), please consider this one for 5.9. Thanks! diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 2a01e31a032c..1e827410e9e1 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -839,7 +839,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp) return ret; } - filp->f_mode |= FMODE_NOWAIT; + filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC; return dquot_file_open(inode, filp); } -- Jens Axboe