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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 51BB6C32751 for ; Sat, 10 Aug 2019 07:34:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C729208C3 for ; Sat, 10 Aug 2019 07:34:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Nf/MKbkX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726167AbfHJHdp (ORCPT ); Sat, 10 Aug 2019 03:33:45 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:55950 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725497AbfHJHdo (ORCPT ); Sat, 10 Aug 2019 03:33:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=gJYmqx91UW51PwstFu/SbwoN2sPZyfxSlyDhyB1diYY=; b=Nf/MKbkXd9zE6PPSILwzde3Sb r5lK9lMJrS0cd0kYwi5nJE4XYDJshkjQJDpSx4Jq6BZCGJNTp3JkHFiS0u5NgmoWWMnPPW02Ivrrs 8vSanjo2z7qY/xauq89FEx+pxdaKixlL9Hj0E8bPs2I+mRKF4gF+ljaJRUrEnofQovY4EHK67aOJc LXNyItOurG0wKMKi5igKGRq0HEihdfoFsXZHEEqv4XgobUAu0UK8eSR4M3x+/aCvu6MGcO9C/LwTV WX3sNw0NyYpUjoD3ONblHSpX2095qPHeA1PInJhvxFYa0jbbExDWCgNOC36VXRdZL7Mda6CBUw5/2 kG2IEpDkw==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1hwLsl-0003Qy-VD; Sat, 10 Aug 2019 07:33:43 +0000 Date: Sat, 10 Aug 2019 00:33:43 -0700 From: Christoph Hellwig To: Theodore Ts'o Cc: Ext4 Developers List , linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH 1/3] ext4: return the extent cache information via fiemap Message-ID: <20190810073343.GA12777@infradead.org> References: <20190809181831.10618-1-tytso@mit.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190809181831.10618-1-tytso@mit.edu> User-Agent: Mutt/1.11.4 (2019-03-13) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Fri, Aug 09, 2019 at 02:18:29PM -0400, Theodore Ts'o wrote: > For debugging reasons, it's useful to know the contents of the extent > cache. Since the extent cache contains much of what is in the fiemap > ioctl, extend the fiemap interface to return this information via some > ext4-specific flags. Nak. No weird fs specific fiemap flags that aren't even in the uapi header. Please provide your own debug only interface.