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 lists.sourceforge.net (unknown [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C5AF2C6FD1C for ; Thu, 23 Mar 2023 22:15:10 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1pfTD9-00035U-Tb; Thu, 23 Mar 2023 22:15:08 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pfTD9-00035O-32 for linux-f2fs-devel@lists.sourceforge.net; Thu, 23 Mar 2023 22:15:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; 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:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=qXNWJfyUItrRDuAMEpPJlWIv3Fg4IgJLJve+sAdgYfo=; b=HAPq/q+MMzTXNn83E6W8Du0lqS ClVnyKE8q2GsQ3d0J8k9kLc150WlTDQxyTRlnE1epfm5Zl3X+x4aR9MSXObcqlxsS4tVlTbfSm5Cf 4UBTRRXkkfiGIQhEAe2zIw4Mc9gpOjqfy+Risf3huquhQ/ZYqgOHy9Bsh2Y3sJeoPs38=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; 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:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=qXNWJfyUItrRDuAMEpPJlWIv3Fg4IgJLJve+sAdgYfo=; b=kF/F1e60NIQ1aLGCSMDuha3sGH JZWx0zV+vBWLTsq4FSYlo2uVSnPo7/zM+euNB0/9wotWeHBYaxb1SIL9UNw15CQWlii2rtXQ6WLgE Exg+drAHaXnXo30YNQmBIWVuNpH5T4WtwP+9cWzvph9OrZdj+5mU5aTlGTJNC49z1/kA=; Received: from dfw.source.kernel.org ([139.178.84.217]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1pfTD9-000kWj-5p for linux-f2fs-devel@lists.sourceforge.net; Thu, 23 Mar 2023 22:15:07 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B8706628E4; Thu, 23 Mar 2023 22:15:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DE53AC433EF; Thu, 23 Mar 2023 22:15:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679609701; bh=M6e/PTV4/QD41rNo3Hf88nH85pNImdOy2sC2f6czaF8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pdHQIosAxULsZ71ZQ4M3a/+6nA4JelE9m3heqzN1jm33f09xdvn5BM51j2+5ZgtGh ozKAK44ifABBqfHW6A11+OPzBa5Hdro61rFw/XqZTTed/Vv3Q/HfAzLZI3kCEAYyth Cq5yxS4T2CCakoiydzTReEchAQWFlbxpUYdKDXvvU1DtEayvqCHCECdn2XC0AVaEat DSQvgZ1qYGZWPkf/De7ZlnVYnQVChVNH1lSeGeUNbndJdhpH0bzmFvqHLSjOCitxdZ zA+t5V7dU6H91Khi7uFbevcWmfWNttqpEbg1r/8ix20xNIO+CKuW9yWHqDLj0sZShN WLSTM/iexVZ4w== Date: Thu, 23 Mar 2023 15:14:59 -0700 From: Jaegeuk Kim To: Christoph Hellwig Message-ID: References: <20230220122004.26555-1-hans.holmberg@wdc.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Headers-End: 1pfTD9-000kWj-5p Subject: Re: [f2fs-dev] [RFC PATCH] f2fs: preserve direct write semantics when buffering is forced X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: damien.lemoal@wdc.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 03/20, Christoph Hellwig wrote: > On Mon, Feb 20, 2023 at 01:20:04PM +0100, Hans Holmberg wrote: > > A) Supporting proper direct writes for zoned block devices would > > be the best, but it is currently not supported (probably for > > a good but non-obvious reason). Would it be feasible to > > implement proper direct IO? > > I don't think why not. In many ways direct writes to zoned devices > should be easier than non-direct writes. > > Any comments from the maintainers why the direct I/O writes to zoned > devices are disabled? I could not find anything helpful in the comments > or commit logs. The direct IO wants to overwrite the data on the same block address, while zoned device does not support it? _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel