From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Sugc=ED=vger.kernel.org=fstests-owner@kernel.org>
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=-2.8 required=3.0 tests=BAYES_00,DATE_IN_PAST_12_24,
	DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 7DD01C4363A
	for <linux-fstests@archiver.kernel.org>; Wed, 28 Oct 2020 21:52:33 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id 273F9208C7
	for <linux-fstests@archiver.kernel.org>; Wed, 28 Oct 2020 21:52:33 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Lgmtcdfy"
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728347AbgJ1Vwa (ORCPT
        <rfc822;linux-fstests@archiver.kernel.org>);
        Wed, 28 Oct 2020 17:52:30 -0400
Received: from casper.infradead.org ([90.155.50.34]:44310 "EHLO
        casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1728343AbgJ1Vwa (ORCPT
        <rfc822;fstests@vger.kernel.org>); Wed, 28 Oct 2020 17:52:30 -0400
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=7bzRZY7TBHeEQ/2417FS//whgYfR5YmoYwEt/p0xlAw=; b=LgmtcdfyTZTGcMF5sd4j2Wm5lz
        dxDmts7e6Elvzy9RArmr1ZWMlHy6gUXobHdPF02qAukoYkyEO+fM18I0rL+M0D+1N0ONvcDAY8oXt
        My7xsQEFOJ5x2wEswRiIblLZxfRZ6kJZdW+PwWvJDK+P7/PYATnV/FvpQFAPkBth9uSWTcB8uSYcz
        OofghRfjr0p/k30Yc92MydlLVziLu7EY25YYM3JglGnnz0orsAWCihh3w68ha/TAcc5b8Ys1TFvXY
        antHPqRVtkDohL38kfG1tPdnuITdZHymtyMOIp2HAtQ4BNkDRtrioSkiZyNlyoToWvgL2TrnDclEx
        FPC6r/Zw==;
Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux))
        id 1kXg7r-0000sp-P7; Wed, 28 Oct 2020 07:44:07 +0000
Date:   Wed, 28 Oct 2020 07:44:07 +0000
From:   Christoph Hellwig <hch@infradead.org>
To:     "Darrick J. Wong" <darrick.wong@oracle.com>
Cc:     guaneryu@gmail.com, linux-xfs@vger.kernel.org,
        fstests@vger.kernel.org
Subject: Re: [PATCH 8/9] check: run tests in a systemd scope for mandatory
 test cleanup
Message-ID: <20201028074407.GH2750@infradead.org>
References: <160382528936.1202316.2338876126552815991.stgit@magnolia>
 <160382534122.1202316.7161591166906029132.stgit@magnolia>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <160382534122.1202316.7161591166906029132.stgit@magnolia>
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by casper.infradead.org. See http://www.infradead.org/rpr.html
Precedence: bulk
List-ID: <fstests.vger.kernel.org>
X-Mailing-List: fstests@vger.kernel.org

On Tue, Oct 27, 2020 at 12:02:21PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> If systemd is available, run each test in its own temporary systemd
> scope.  This enables the test harness to forcibly clean up all of the
> test's child processes (if it does not do so itself) so that we can move
> into the post-test unmount and check cleanly.

Can you explain what this mean in more detail?  Most importantly what
problems it fixes.