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=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, 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 C8106C43603 for ; Wed, 18 Dec 2019 11:22:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3A7321582 for ; Wed, 18 Dec 2019 11:22:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726676AbfLRLWW (ORCPT ); Wed, 18 Dec 2019 06:22:22 -0500 Received: from mx2.suse.de ([195.135.220.15]:59416 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725930AbfLRLWW (ORCPT ); Wed, 18 Dec 2019 06:22:22 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id ACCA8AD2C; Wed, 18 Dec 2019 11:22:20 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 64D181E0B2D; Wed, 18 Dec 2019 12:22:20 +0100 (CET) Date: Wed, 18 Dec 2019 12:22:20 +0100 From: Jan Kara To: Paul Richards Cc: Jan Kara , linux-ext4@vger.kernel.org Subject: Re: Query about ext4 commit interval vs dirty_expire_centisecs Message-ID: <20191218112220.GA13668@quack2.suse.cz> References: <20191213155912.GH15474@quack2.suse.cz> <20191218083301.GA4083@quack2.suse.cz> 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) Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Wed 18-12-19 10:35:56, Paul Richards wrote: > I found it here: > https://www.kernel.org/doc/Documentation/filesystems/ext4.txt > > I think this might be the source, but I'm not sure: > https://github.com/torvalds/linux/blame/master/Documentation/admin-guide/ext4.rst#L185-L187 Yes, that's it. Somehow my grep capabilities failed me :-| Thanks for the pointer. > While searching for this I also found a copy of the same `commit` > documentation here: > https://github.com/torvalds/linux/blob/master/Documentation/filesystems/ocfs2.txt > I don't know if the same correction should be made for ocfs2 or not. For OCFS2 it is somewhat different since it doesn't do delayed allocation. So the text is actually correct for file creation. It is still incorrect for file overwrites though on which commit interval has no effect. Honza -- Jan Kara SUSE Labs, CR