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=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 41A8EC433E0 for ; Tue, 5 Jan 2021 22:01:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D385422D75 for ; Tue, 5 Jan 2021 22:01:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D385422D75 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 08E516B0143; Tue, 5 Jan 2021 17:01:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 064DE6B0144; Tue, 5 Jan 2021 17:01:50 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EBC946B0145; Tue, 5 Jan 2021 17:01:50 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0002.hostedemail.com [216.40.44.2]) by kanga.kvack.org (Postfix) with ESMTP id D53256B0143 for ; Tue, 5 Jan 2021 17:01:50 -0500 (EST) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 92CF4181AEF15 for ; Tue, 5 Jan 2021 22:01:50 +0000 (UTC) X-FDA: 77673094380.13.birds77_210192b274dc Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin13.hostedemail.com (Postfix) with ESMTP id 6B17A18140B60 for ; Tue, 5 Jan 2021 22:01:50 +0000 (UTC) X-HE-Tag: birds77_210192b274dc X-Filterd-Recvd-Size: 3653 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by imf49.hostedemail.com (Postfix) with ESMTP for ; Tue, 5 Jan 2021 22:01:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1609884109; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DCiTIr0SkXb9xXdCM/zdjzsQYQMxU0c5XLqeexCynRw=; b=NBkENRmuICr3VYRHCkPxXtB0nOwfFsfgvOu2NyyJ11KvEY7BDlBN+awUXXJzcPv24YVSFW GvUZ0TMHu9dvSI5uiJjbsldWisMVifHf/+S7zU89Jdpj1SEhoyNPB4VHPpmpV5gr0+anlA Y1e5iKPfPF3NRHfrpMZKIwmT92qEktI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-311-v1618q3dM_CPEgMXu8h55A-1; Tue, 05 Jan 2021 17:01:44 -0500 X-MC-Unique: v1618q3dM_CPEgMXu8h55A-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 02B3B801B14; Tue, 5 Jan 2021 22:01:41 +0000 (UTC) Received: from ovpn-115-104.rdu2.redhat.com (ovpn-115-104.rdu2.redhat.com [10.10.115.104]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0AB055D9D2; Tue, 5 Jan 2021 22:01:37 +0000 (UTC) Message-ID: Subject: Re: [PATCH v21 00/19] per memcg lru lock From: Qian Cai To: Hugh Dickins Cc: Shakeel Butt , Alex Shi , Andrew Morton , Mel Gorman , Tejun Heo , Konstantin Khlebnikov , Daniel Jordan , Matthew Wilcox , Johannes Weiner , kernel test robot , Linux MM , LKML , Cgroups , Joonsoo Kim , Wei Yang , "Kirill A. Shutemov" , alexander.duyck@gmail.com, kernel test robot , Michal Hocko , Vladimir Davydov , Yang Shi Date: Tue, 05 Jan 2021 17:01:37 -0500 In-Reply-To: References: <1604566549-62481-1-git-send-email-alex.shi@linux.alibaba.com> <49be27f2652d4658f80c95bea171142c35513761.camel@redhat.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, 2021-01-05 at 13:35 -0800, Hugh Dickins wrote: > This patchset went into mmotm 2020-11-16-16-23, so probably linux-next > on 2020-11-17: you'll have had three trouble-free weeks testing with it > in, so it's not a likely suspect. I haven't looked yet at your report, > to think of a more likely suspect: will do. Probably my memory was bad then. Unfortunately, I had 2 weeks holidays before the Thanksgiving as well. I have tried a few times so far and only been able to reproduce once. Looks nasty...