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[209.132.180.67]) by mx.google.com with ESMTP id f15si8006pfn.41.2019.08.22.08.50.43; Thu, 22 Aug 2019 08:50:59 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=iyDcrcA+; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733112AbfHVO37 (ORCPT + 99 others); Thu, 22 Aug 2019 10:29:59 -0400 Received: from mail-wr1-f42.google.com ([209.85.221.42]:37498 "EHLO mail-wr1-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732974AbfHVO36 (ORCPT ); Thu, 22 Aug 2019 10:29:58 -0400 Received: by mail-wr1-f42.google.com with SMTP id z11so5657890wrt.4; Thu, 22 Aug 2019 07:29:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=tLNXP86xJdI97QkQX4COi/mM+VMKt9pcSlHlaNIVz3o=; b=iyDcrcA+H5zHrvrLuvsD0FGyWdEnoRBnP5IbVJbAX47byUeQcv8lHU84Xm5VT5nGYG S2FtpHG9cc3I2vlacEXtugl8kiRwpnCL2UvkqcWshkSUztVfYMywxMfmv8wlWPJkEQ1c lg1A+MIWM75RofPFS0CELUC4f0lhWgxu9tdBm43G6o2QGw/ViERIKzaORmguy7iEPRfF ZPN24ZzULsp2RNdtWZKHMujvyksYfzpeN/PSL699h/tNMh2/OFcLT63+WEM1fr/lF/NT EkJjPsY8DEnEe1sMTWpKKLtwlfUO2yFZv0KwscFI1z7+/NAVcMO1F+nNxKWmloP6J3cH rbOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=tLNXP86xJdI97QkQX4COi/mM+VMKt9pcSlHlaNIVz3o=; b=AqWCL2n8syRaX0u8ig/50gquOCyiEe89meLl/E6aMlvhfWAPkZ23CdqhHyXSXriSfM 1OJ2SdP+RXX8LTJ2OG1OQe2gZcMc8o1TZ+bhsbyNS+T3CeURRXJqPB/CvXWurgNH9PUk aPR7rRGRbjLt0kN0UjZ4yAZBlrimn8yvJ4GbqrcOsAKEKWvk23tXzSorE5/WBlChVrad WPT7R7IbZG7oGqgcLB4nVRACjO+AZ7SOLQckKcbNSe6XjodDzH5c/hnprCGHb4YGh79e lj7oqaeW2VhPqnpT5mGywPAoP9Bk9TaaITFax+5CJfXKx3ThpgOJwPShbqR1yOtkwt33 3f2A== X-Gm-Message-State: APjAAAX6/shEE8jWi3+XE3VsBFK+LDuJLqNoluTY5OCH1GYEfVjIGtER Xdh8OvS9C8wZyMRX/lfJcRzB9NBs3Ii4wPx7w+M= X-Received: by 2002:a05:6000:12c3:: with SMTP id l3mr47095595wrx.100.1566484196685; Thu, 22 Aug 2019 07:29:56 -0700 (PDT) MIME-Version: 1.0 References: <1323459733.69859.1566234633793.JavaMail.zimbra@nod.at> <20190819204504.GB10075@hsiangkao-HP-ZHAN-66-Pro-G1> <20190821220251.GA3954@hsiangkao-HP-ZHAN-66-Pro-G1> <20190822142142.GB2730@mit.edu> In-Reply-To: <20190822142142.GB2730@mit.edu> From: Richard Weinberger Date: Thu, 22 Aug 2019 16:29:44 +0200 Message-ID: Subject: Re: erofs: Question on unused fields in on-disk structs To: "Theodore Y. Ts'o" , Richard Weinberger , Gao Xiang , Richard Weinberger , linux-fsdevel , linux-erofs@lists.ozlabs.org, linux-kernel Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 22, 2019 at 4:21 PM Theodore Y. Ts'o wrote: > It might make life easier for other kernel developers if "features" > was named "compat_features" and "requirements" were named > "incompat_features", just because of the long-standing use of that in > ext2, ext3, ext4, ocfs2, etc. But that naming scheme really is a > legacy of ext2 and its descendents, and there's no real reason why it > has to be that way on other file systems. Yes, the naming confused me a little. :-) -- Thanks, //richard