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 BC804C47422 for ; Thu, 25 Jan 2024 20:47:59 +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 1rT6dg-0006V9-Lz; Thu, 25 Jan 2024 20:47:57 +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 1rT6db-0006Ue-Ll for linux-f2fs-devel@lists.sourceforge.net; Thu, 25 Jan 2024 20:47:52 +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=BBqOb/ZqrKdawgvhDpAKr22AD6q4pmmVnTFBoWIGiU8=; b=Va9YYapu4MONg4WEounjjOyRtY +4bjK5F5QXr04z6Jzov+Vwuv9dxyvU0HGKfjblj1pkDWUihKfajJzzz4nl833xTgzxrS/Jz2GztHm zs+MWMtBAGDwyB4M5WZpQ87iEYeFinyn0A5ueW2rR3sQJjaPgAOnRThoG+dwVExHB9g4=; 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=BBqOb/ZqrKdawgvhDpAKr22AD6q4pmmVnTFBoWIGiU8=; b=CrZI4Lr2/wdXNcS8XjFV32DQlv whd5x/xXNOfvbZhC76yLBGWuODfeArriRFk8i/clAyTCHbgWdlU4qLIaiQbL0QF4EjPORrjyN2rtu sUQDV8ooGp4KsErP6Up6CFiAXQrX8v4VwmpP3/15oF/OfMfjdmYKn4XpErMo22fxAxw8=; Received: from casper.infradead.org ([90.155.50.34]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rT6dZ-0004b1-9w for linux-f2fs-devel@lists.sourceforge.net; Thu, 25 Jan 2024 20:47:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=BBqOb/ZqrKdawgvhDpAKr22AD6q4pmmVnTFBoWIGiU8=; b=N6o2AsrFBnAxGhkLunHLObyk6I e4zIFiWfoXqIX1uGE4X5PvacBk28dmC5837lBiaHc/0AwORUO7ROgg+Nl8jhP+maRD+1utRm1Bh87 oEL1gHoCpSocSeYW41GJz3OCLXYq1nTa7wVQqyohz3CxubRixhcW07tzQGKL/q3eQ+HANlwcc+W3Q Im+GTbC7oygnNpQRb7DI/08r6ASMkp1NGYRXZUA6iBam2ELid26Sve4ryqWxQBBMSdKIbjI+VGP0t Bdt8FM3sEOJrJdcoFkIeGXjiHxvruvxzYaK90OD1m4gPm/RJuL6zdClJzEDiEWxpRaVf/KfMY3YtY qnxp6K/g==; Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rT6dP-0000000B791-1vmr; Thu, 25 Jan 2024 20:47:39 +0000 Date: Thu, 25 Jan 2024 20:47:39 +0000 From: Matthew Wilcox To: Luis Chamberlain Message-ID: References: <20221130124804.79845-1-frank.li@vivo.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Headers-End: 1rT6dZ-0004b1-9w Subject: Re: [f2fs-dev] [PATCH] f2fs: Support enhanced hot/cold data separation for f2fs 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: Pankaj Raghav , Yangtao Li , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, vishal.moola@gmail.com, linux-mm@kvack.org, Adam Manzanares , Javier =?iso-8859-1?Q?Gonz=E1lez?= , linux-fsdevel@vger.kernel.org, Jaegeuk Kim Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Wed, Dec 07, 2022 at 12:51:13PM -0800, Luis Chamberlain wrote: > On Wed, Nov 30, 2022 at 03:18:41PM +0000, Matthew Wilcox wrote: > > From a filesystem point of view, you need to ensure that you handle folios > > larger than PAGE_SIZE correctly. The easiest way is to spread the use > > of folios throughout the filesystem. For example, today the first thing > > we do in f2fs_read_data_folio() is convert the folio back into a page. > > That works because f2fs hasn't told the kernel that it supports large > > folios, so the VFS won't create large folios for it. > > > > It's a lot of subtle things. Here's an obvious one: > > zero_user_segment(page, 0, PAGE_SIZE); > > There's a folio equivalent that will zero an entire folio. > > > > But then there is code which assumes the number of blocks per page (maybe > > not in f2fs?) and so on. Every filesystem will have its own challenges. > > > > One way to approach this is to just enable large folios (see commit > > 6795801366da or 8549a26308f9) and see what breaks when you run xfstests > > over it. Probably quite a lot! > > Me and Pankaj are very interested in helping on this front. And so we'll > start to organize and talk every week about this to see what is missing. > First order of business however will be testing so we'll have to > establish a public baseline to ensure we don't regress. For this we intend > on using kdevops so that'll be done first. > > If folks have patches they want to test in consideration for folio / > iomap enhancements feel free to Cc us :) > > After we establish a baseline we can move forward with taking on tasks > which will help with this conversion. So ... it's been a year. How is this project coming along? There weren't a lot of commits to f2fs in 2023 that were folio related. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel