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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF16EC4167B for ; Thu, 30 Nov 2023 18:35:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346558AbjK3Sfu (ORCPT ); Thu, 30 Nov 2023 13:35:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231959AbjK3Sfs (ORCPT ); Thu, 30 Nov 2023 13:35:48 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 259E810D0; Thu, 30 Nov 2023 10:35:54 -0800 (PST) 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=qQKU50vKbXATuSXglJgEj5fFzmKu+YBO07b8qJOOdtA=; b=a27xugt2s7VCRZavZTnsN7HQZG 49KGSFnP/lAr4dvK7i3HDJ4RMmY5/nj+Q/JtVwbX2EuSbtBP1TjOeJMiHUf17uTVAJdLo1VZZ8F7w f71Vg7/+DA5n6sUIJ030PbPVYq4bFV/2Q2Ch0CQ0wUYSClwjbvJxHySEDNe+p12tTfX4vqeMoQWG/ RhpFELpiLJn1M+ZCQSbXXoxilSLcvbQDkXyKOLFhzt6YooPUXC46hvY+yy3pK5WjJBP/Ib1g29m8f ILI8SIpHjF0/ndrR5p2Q8uZNWd++lBHHKEPQf23MjpSx3hP2l9JhKT9Be1BvgumVRJd2JPK/YsJ32 OHAR/qMA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1r8lss-00Ek8D-29; Thu, 30 Nov 2023 18:35:34 +0000 Date: Thu, 30 Nov 2023 18:35:34 +0000 From: Matthew Wilcox To: Yangtao Li Cc: Jaegeuk Kim , Chao Yu , Jonathan Corbet , Wenbo Hong , linux-f2fs-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] f2fs: add support for an i_version counter Message-ID: References: <20231130090413.1291703-1-frank.li@vivo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231130090413.1291703-1-frank.li@vivo.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 30, 2023 at 02:04:09AM -0700, Yangtao Li wrote: > NFSv4 mandates a change attribute to avoid problems with timestamp > granularity, which Linux implements using the i_version counter. This is > particularly important when the underlying filesystem is fast. > > BTW introduce a new mount option to enable the iversion functionality, > and disabling it by default. Why do you want to replicate the mistake made in ext4 and undone by commit 1ff20307393e ?