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=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID 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 CD31EC67790 for ; Fri, 27 Jul 2018 12:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B83D2088E for ; Fri, 27 Jul 2018 12:14:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=contabo.de header.i=@contabo.de header.b="xzK3Ivkz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B83D2088E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=contabo.de 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 S1732728AbeG0Nfi (ORCPT ); Fri, 27 Jul 2018 09:35:38 -0400 Received: from mail.contabo.com ([91.205.175.50]:35769 "EHLO mail.contabo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730126AbeG0Nfi (ORCPT ); Fri, 27 Jul 2018 09:35:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=contabo.de; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version :Date:Message-ID:From:References:Cc:To:Subject:Sender:Reply-To: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=g7/TnCNoBLFIK3JP0uN10aVX+Xrsx2lI3xqesWbpf4A=; b=xzK3Ivkz5a4hkoU67+CAWoLo/A IZSHVv9BDw3vhq76ZfDzScrY/42YsirGRU7ulrNHQvcjxqgEThexGS6VNPAMXPfoTn+Ew4ckE5RXt hf6KRamzmY0g6s1TAmP0hu6YPvbrU5UuD/jXx2Td5UHJXUNAMW76ktAdLu9xEVVQ/mlG5wiZ36vtG 0CsA9PYtuixiSW+NHwYbGLs/jxr/CctMrs8kfnzUqADubjSUZnmDDB2nVwzqr0epObXpILQ3pFZ2i uNFgVLU3cJ7OgfxnyCZkAXTbKA4H52a7DvZg845CYyoh2SrFkHf7rQpLKF/04QbbBMUK3Rgn/slKd PbYGzdTQ==; Received: from [178.238.239.246] (port=31756 helo=[192.168.178.123]) by mail.contabo.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1fj1d7-0002IV-AL; Fri, 27 Jul 2018 14:13:57 +0200 Subject: Re: Zram writeback feature unstable with heavy swap utilization - BUG: Bad page state in process... To: Minchan Kim Cc: ngupta@vflare.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky , Andrew Morton References: <20180725132126.GA2893@rodete-laptop-imager.corp.google.com> <20180726020351.GA221405@rodete-desktop-imager.corp.google.com> <1684cefc-c920-d53c-8d2d-c32da213a045@contabo.de> <15e3a0af-7e02-83fb-4b72-b05f6d7ded71@contabo.de> <20180726103001.GC221405@rodete-desktop-imager.corp.google.com> <20180727091431.GA229060@rodete-desktop-imager.corp.google.com> <4e0ab1cd-ea7a-0916-eb85-0396c61bd949@contabo.de> <20180727120517.GB229060@rodete-desktop-imager.corp.google.com> From: Tino Lehnig Message-ID: <54eddd07-9fe5-0a83-0d2f-556726f64516@contabo.de> Date: Fri, 27 Jul 2018 14:13:57 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180727120517.GB229060@rodete-desktop-imager.corp.google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mail.contabo.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - contabo.de X-Get-Message-Sender-Via: mail.contabo.com: authenticated_id: tino.lehnig@contabo.de X-Authenticated-Sender: mail.contabo.com: tino.lehnig@contabo.de Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/27/2018 02:05 PM, Minchan Kim wrote: > And bad page is always with writeback enable? > > writeback enable means "echo "some dev" > /sys/block/zram0/backing_dev, > not just enable CONFIG_ZRAM_WRITEBACK. Yes, the bug only appears when backing_dev is set. -- Kind regards, Tino Lehnig