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=-7.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 6E586C433E6 for ; Wed, 23 Dec 2020 09:05:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D83F224B1 for ; Wed, 23 Dec 2020 09:05:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728277AbgLWJFc (ORCPT ); Wed, 23 Dec 2020 04:05:32 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:36806 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726463AbgLWJFb (ORCPT ); Wed, 23 Dec 2020 04:05:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608714245; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=OaC3p3G7D+OAUePrA9tt4mZlNk2KETCOwvVfWCYaUNw=; b=SCRHa3Za1aZ79bJxetLUmP+MbIbRrhXCPl1kogGP7gDQZ6U9MO31sS6mIDcqYSenlsmVlP GjDNu3K2BIp4BwG/Zbacw9YHmvTvVI1KfT3LQJ+6foKVa78pwPCZpd9SgkeSYDEc6TmitR GfZfjC0B6KKwm6JVqvh4l5n93YySup4= Received: from mail-pf1-f200.google.com (mail-pf1-f200.google.com [209.85.210.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-377-HBCpAXLGNbe2T9I1PhlyFg-1; Wed, 23 Dec 2020 04:04:03 -0500 X-MC-Unique: HBCpAXLGNbe2T9I1PhlyFg-1 Received: by mail-pf1-f200.google.com with SMTP id y2so8226022pfr.12 for ; Wed, 23 Dec 2020 01:04:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=OaC3p3G7D+OAUePrA9tt4mZlNk2KETCOwvVfWCYaUNw=; b=eZdSGXU//EPyUvCvJ65WcLfouyEy7luSRPoBm+oBzi4mUCXe9EFUZvbHWszb3/OuEf kBmQQX4wao2BIC3jnCt7RNdJOkIGqqTp4/QQtvTlUxptMsaP02/kstsL0MzuCVv/+vQO XTmcsDOrFH9jwj+ZyUjmyfdl5A5LSgC4pWokz40xKcLanJ6HdQtWXdwbnea5oCyGpDDp EZXObA9IkJWBH59MQbvoKWpxBCCB/nz8SzsoaPgrRA38upKDy8L32+xst7lS9EcZ02PK UyT6SoUINypeTpzZdP20nr4OjppEyYcyZIlPIxsESIrCxZ8tMk4O6/G03cNHrqx8LMDK HmGw== X-Gm-Message-State: AOAM5311dtMdEf+kmHBnY9TcNm9XNZoYFTAEXDylu8Sc4vJenab5GcyG /SfUTz0BSib29TK2WeTaViMVT+Yh/rlg77//UcVmElMNS83ZPJEoqRDLOKUFbP8WADAAsH0/l1r oefCjNtpNStgMTNJM8RaBXFSR X-Received: by 2002:a17:90a:c085:: with SMTP id o5mr26263187pjs.210.1608714242257; Wed, 23 Dec 2020 01:04:02 -0800 (PST) X-Google-Smtp-Source: ABdhPJzIKfS4YxdIIJVZA9uuysC0+hLnyPpVrMJbFMUBiUUXAj0mYc5Xq/Vqz7vigPuhlVA8c9opkw== X-Received: by 2002:a17:90a:c085:: with SMTP id o5mr26263176pjs.210.1608714242074; Wed, 23 Dec 2020 01:04:02 -0800 (PST) Received: from xiangao.remote.csb ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id b19sm22034409pfo.24.2020.12.23.01.03.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Dec 2020 01:04:01 -0800 (PST) Date: Wed, 23 Dec 2020 17:03:51 +0800 From: Gao Xiang To: Christoph Hellwig Cc: Huang Jianan , guoweichao@oppo.com, linux-erofs@lists.ozlabs.org, zhangshiming@oppo.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] erofs: support direct IO for uncompressed file Message-ID: <20201223090351.GD1831635@xiangao.remote.csb> References: <20201214140428.44944-1-huangjianan@oppo.com> <20201222142234.GB17056@infradead.org> <20201222193901.GA1892159@xiangao.remote.csb> <20201223074455.GA14729@infradead.org> <20201223085401.GA336@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201223085401.GA336@infradead.org> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 23, 2020 at 08:54:01AM +0000, Christoph Hellwig wrote: > On Wed, Dec 23, 2020 at 04:48:20PM +0800, Huang Jianan wrote: > > Hi Christoph, > > > > The reason we use dio is because we need to deploy the patch on some early > > kernel versions, and we don't pay much attention to the change of iomap. > > No, that is never an excuse for upstream development. Ok, personally I also agree this, let's go further in this way. Thanks, Gao Xiang >