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=-2.2 required=3.0 tests=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 88380C33CAF for ; Wed, 22 Jan 2020 08:22:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 69C4A2465B for ; Wed, 22 Jan 2020 08:22:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726026AbgAVIWA (ORCPT ); Wed, 22 Jan 2020 03:22:00 -0500 Received: from mail104.syd.optusnet.com.au ([211.29.132.246]:51989 "EHLO mail104.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725868AbgAVIWA (ORCPT ); Wed, 22 Jan 2020 03:22:00 -0500 Received: from dread.disaster.area (pa49-181-218-253.pa.nsw.optusnet.com.au [49.181.218.253]) by mail104.syd.optusnet.com.au (Postfix) with ESMTPS id 4087E82054C; Wed, 22 Jan 2020 19:21:56 +1100 (AEDT) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1iuBGt-0002mm-AC; Wed, 22 Jan 2020 19:21:55 +1100 Date: Wed, 22 Jan 2020 19:21:55 +1100 From: Dave Chinner To: Dan Williams Cc: Matthew Wilcox , "Darrick J. Wong" , linux-ext4 , Amir Goldstein , Qu Wenruo , xfs , Steve French , ocfs2-devel@oss.oracle.com, linux-fsdevel , lsf-pc@lists.linux-foundation.org, linux-btrfs Subject: Re: [Lsf-pc] [LFS/MM TOPIC] fs reflink issues, fs online scrub/check, etc Message-ID: <20200122082155.GA9317@dread.disaster.area> References: <20160210191715.GB6339@birch.djwong.org> <20160210191848.GC6346@birch.djwong.org> <0089aff3-c4d3-214e-30d7-012abf70623a@gmx.com> <20200121161840.GA8236@magnolia> <20200121220112.GB14467@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=X6os11be c=1 sm=1 tr=0 a=TU0PeEMO9XNyODJ+pEfdLw==:117 a=TU0PeEMO9XNyODJ+pEfdLw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=Jdjhy38mL1oA:10 a=JfrnYn6hAAAA:8 a=7YfXLusrAAAA:8 a=7-415B0cAAAA:8 a=S4ei3vxw9mJ_NyWoTJ0A:9 a=CjuIK1q_8ugA:10 a=1CNFftbPRP8L7MoqJWF3:22 a=SLz71HocmBbuEhFRYD3r:22 a=biEYGPWJfzWAr4FL6Ov7:22 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Jan 21, 2020 at 04:47:27PM -0800, Dan Williams wrote: > On Tue, Jan 21, 2020 at 2:02 PM Matthew Wilcox wrote: > > > > On Tue, Jan 21, 2020 at 08:18:40AM -0800, Darrick J. Wong wrote: > > > On Tue, Jan 21, 2020 at 09:35:22AM +0200, Amir Goldstein wrote: > > > > On Tue, Jan 21, 2020 at 3:19 AM Qu Wenruo wrote: > > > > > > > > > > Didn't see the original mail, so reply here. > > > > > > > > Heh! Original email was from 2016, but most of Darrick's wish list is > > > > still relevant in 2020 :) > > > > > > Grumble grumble stable behavior of clonerange/deduperange ioctls across > > > filesystems grumble grumble. > > > > > > > I for one would be very interested in getting an update on the > > > > progress of pagecache > > > > page sharing if there is anyone working on it. > > > > > > Me too. I guess it's the 21st, I should really send in a proposal for > > > *this year's* LSFMMBPFLOLBBQ. > > > > I still have Strong Opinions on how pagecache page sharing should be done > > ... and half a dozen more important projects ahead of it in my queue. > > So I have no update on this. > > We should plan to huddle on this especially if I don't get an RFC for > dax-reflink support out before the summit. It would be a good idea to share your ideas about how you plan to solve this problem earlier rather than later so you don't waste time going down a path that is incompatible with what the filesystems need to/want to/can do. Cheers, Dave. -- Dave Chinner david@fromorbit.com