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=-0.8 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 62A3CC6786F for ; Thu, 1 Nov 2018 23:01:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F37B920657 for ; Thu, 1 Nov 2018 23:01:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="vOyqO3Fb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F37B920657 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728100AbeKBIGq (ORCPT ); Fri, 2 Nov 2018 04:06:46 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:35399 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726386AbeKBIGq (ORCPT ); Fri, 2 Nov 2018 04:06:46 -0400 Received: by mail-pg1-f193.google.com with SMTP id 32-v6so67812pgu.2 for ; Thu, 01 Nov 2018 16:01:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=PUTUmuA4BAAHF0QIxrg9myki0Ae0g45BmwJh4otzHA0=; b=vOyqO3FbBRXH/w9LKQMSyqE59hQ+kwOTdVejlhHC3JVw6Ikc+p9Uez/rh1kapEQl0+ lS9+xUwMH0e9M6E2NxqV1ClqWrO5Fw0HMmisSPTToRPtaDq7KocG34FM1Gz+/2zndW9T 28niaNnRPfVZJn/6z8MC/hmZkwzPv9rB/FRDYOn0oShEwssM7pG9UcYZJ5CRx3y2RRkw wCSaIwA7h4qc4l8a+XoRmffbn9cynfOOQX4HrPW/JMVrIJjqVLqIHViEu8vijJNJM9Ph 4xXYMV4+cPg78Pv0hX2VOoK1iPo41qiZl8SlHXIcO2kuuZXsnyEaDdI8UOSqNFVluHjf r9lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=PUTUmuA4BAAHF0QIxrg9myki0Ae0g45BmwJh4otzHA0=; b=GFXV1QX2jfbpJtyYzcdZWGxQzRBH2NULrUjbdtnQRLfIPRTS1hNcksLDDT3o3+SOBA JYOKLH2rQq1gjXjcc6uQyuKlGxP7u0BHQUpHlPfZUl1TQsY9IyJMzxjsm9/pRTipicM9 k5mxZTtMK3v9t2T8pF2YBofxSS/ceaDEt8YCqllqhvFZhCwRsNgO4pVXGWANWGfpMi9T riemXcRkGGVKQ61d6BPoBV0VyqH3jMhXLBbQqR+9ahM7DQfeG4oeiKdBZmZJcrVvkwFE PUMaWjVCjEpTjvimK0/FiyC+cvIKyqzFl2VKVY8kovB0jiZhQ+WW0AkwUq51bxB5FSv1 EB6A== X-Gm-Message-State: AGRZ1gLO4nAgSZ8Njtrd9YCf/Cu0odxJg1Phd7/KdbKV5Rz2Gr6XLzAQ VUIEqtLK1vbbfEUFnNJ5tQCispDprro= X-Google-Smtp-Source: AJdET5evOU3AJfZHaU0fCaBcnVw7Jkz2gk2pskHlnfFn3FlLuhQpUyvVVT4Zh6hrfNVmxJYi27aYUA== X-Received: by 2002:a62:b09:: with SMTP id t9-v6mr9592159pfi.36.1541113305949; Thu, 01 Nov 2018 16:01:45 -0700 (PDT) Received: from [192.168.1.121] (66.29.188.166.static.utbb.net. [66.29.188.166]) by smtp.gmail.com with ESMTPSA id v20-v6sm52479689pfj.107.2018.11.01.16.01.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Nov 2018 16:01:44 -0700 (PDT) Subject: Re: [PATCH] blkcg: revert blkcg cleanups series To: Dennis Zhou Cc: Tejun Heo , kernel-team@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org References: <20181101212410.47569-1-dennis@kernel.org> From: Jens Axboe Message-ID: Date: Thu, 1 Nov 2018 17:01:43 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20181101212410.47569-1-dennis@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/1/18 3:24 PM, Dennis Zhou wrote: > This reverts a series committed earlier due to null pointer exception > bug report in [1]. It seems there are edge case interactions that I did > not consider and will need some time to understand what causes the > adverse interactions. > > The original series can be found in [2] with a follow up series in [3]. > > [1] https://www.spinics.net/lists/cgroups/msg20719.html > [2] https://lore.kernel.org/lkml/20180911184137.35897-1-dennisszhou@gmail.com/ > [3] https://lore.kernel.org/lkml/20181020185612.51587-1-dennis@kernel.org/ > > This reverts the following commits: > d459d853c2ed, b2c3fa546705, 101246ec02b5, b3b9f24f5fcc, e2b0989954ae, > f0fcb3ec89f3, c839e7a03f92, bdc2491708c4, 74b7c02a9bc1, 5bf9a1f3b4ef, > a7b39b4e961c, 07b05bcc3213, 49f4c2dc2b50, 27e6fa996c53 Thanks Dennis, I think this is the best way forward. Then you can work on getting the stacked setups working correctly for 4.21. -- Jens Axboe