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 (lists.sourceforge.net [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 EEAE1C00144 for ; Fri, 29 Jul 2022 13:27:24 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.94.2) (envelope-from ) id 1oHQ1S-0007ry-9i; Fri, 29 Jul 2022 13:27:21 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1oHQ1Q-0007rr-Hj for linux-f2fs-devel@lists.sourceforge.net; Fri, 29 Jul 2022 13:27:19 +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=eCHNh6LIA9gROqbDgmH+94ZUhQ9hP1NXx31IFuMdPWs=; b=BvlzmQHNBYlAgCDoNM9AmnoKPO bPO12Tiu+KfYAKlmkNo0WzfuFmJ3RJTqV8EqUPY4fna0ctdT1/oDI8BiABlMVKoIjTtZpq/AhjdiQ GJGmmwUqMSABAi6nX1gkGit7+XhcUpwC6Pb89sSHt/P+gThYxyKWg3NRCfMkt1DvZohw=; 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=eCHNh6LIA9gROqbDgmH+94ZUhQ9hP1NXx31IFuMdPWs=; b=YUpZ1uAkEBPpQgtDKcQoHkBxvu dJDMQkyn0VbK5AQp9S9N9ydR54Vnx5uThUgYetRi8IbIdjJ18c0t3cowfKHHBrClrtvKPIu2cbvSx 1yHVYhcPD62O+9GIDSNCR9i0idi9xNHKG5Vqp3+DiycNGJjPB3nJEDBiH8zL/W7GbgGw=; Received: from bombadil.infradead.org ([198.137.202.133]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.94.2) id 1oHQ1L-00027r-F4 for linux-f2fs-devel@lists.sourceforge.net; Fri, 29 Jul 2022 13:27:19 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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; bh=eCHNh6LIA9gROqbDgmH+94ZUhQ9hP1NXx31IFuMdPWs=; b=YG0E8TX0Hjc5KOEydvltqdXoI7 MxeSDaw5iUawZAp0Ro9zRcqvwAvICwC2vtcMbH+8AIw2zVvxJK42HEW1LFuwsZlhymKVgmvZ8e/z3 7oChMqWHO6rmpbqlV05cTfb354oLhilwEaNI8JmfVxoicyfJp9zDI9smPAiZAMdj+owm5nsccPD+X bb+dvxcElbxtXB1y5qpV5NYEo1tChNpmhkRM4/6WmlkVg8nQdnJY6CBQD+c5bsJ/FLE0shF81dzvm 1xpvAP2eWPoNh2oxeWJ2II4w/BLMWW0J0ewVIMjYA7xQ4aRAu7b2Bb3zgg9IsXjOsbK3mtUG/YOs4 vJ2+Kw0Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1oHQ12-0059BM-RJ; Fri, 29 Jul 2022 13:26:56 +0000 Date: Fri, 29 Jul 2022 06:26:56 -0700 From: Christoph Hellwig To: Eunhee Rho Message-ID: References: <20220729002517epcms2p35eed262c3349287436c1848ab350c2d4@epcms2p3> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220729002517epcms2p35eed262c3349287436c1848ab350c2d4@epcms2p3> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Headers-End: 1oHQ1L-00027r-F4 Subject: Re: [f2fs-dev] [PATCH v0] f2fs: allow direct read for zoned device 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: "jaegeuk@kernel.org" , "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 Fri, Jul 29, 2022 at 09:25:17AM +0900, Eunhee Rho wrote: > For zoned devices, f2fs forbids direct IO and forces buffered IO > to serialize write IOs. However, the constraint does not apply to > read IOs. Asymetric capabilitis will cause a whole lot of problems for us. Can we figure out why direct writes to zoned devices are not supported and just fix that instead? _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel