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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 6C656C47404 for ; Mon, 14 Oct 2019 07:19:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B2BF20882 for ; Mon, 14 Oct 2019 07:19:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730240AbfJNHTT (ORCPT ); Mon, 14 Oct 2019 03:19:19 -0400 Received: from verein.lst.de ([213.95.11.211]:47579 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729928AbfJNHTT (ORCPT ); Mon, 14 Oct 2019 03:19:19 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id A3AD768CFC; Mon, 14 Oct 2019 09:19:16 +0200 (CEST) Date: Mon, 14 Oct 2019 09:19:16 +0200 From: Christoph Hellwig To: "Darrick J. Wong" Cc: Christoph Hellwig , linux-xfs@vger.kernel.org Subject: Re: [PATCH 2/2] xfs: ignore extent size hints for always COW inodes Message-ID: <20191014071916.GE10081@lst.de> References: <20191011130316.13373-1-hch@lst.de> <20191011130316.13373-3-hch@lst.de> <20191012003226.GN13108@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191012003226.GN13108@magnolia> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Fri, Oct 11, 2019 at 05:32:26PM -0700, Darrick J. Wong wrote: > On Fri, Oct 11, 2019 at 06:03:16AM -0700, Christoph Hellwig wrote: > > There is no point in applying extent size hints for always COW inodes, > > as we would just have to COW any extra allocation beyond the data > > actually written. > > > > Signed-off-by: Christoph Hellwig > > Looks ok, I guess? > > By the way, what's the plan for always_cow inodes, seeing as it's still > only a debugging feature? Support for zoned devices and an O_ATOMIC-like mode that supports data integrity safe overwrites. I've found some time to spend on both lately, but the former might land on the list first.