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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E57B0C433F5 for ; Wed, 27 Apr 2022 23:25:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 75C076B0071; Wed, 27 Apr 2022 19:25:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 70A716B0073; Wed, 27 Apr 2022 19:25:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5D2D66B0074; Wed, 27 Apr 2022 19:25:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id 49A596B0071 for ; Wed, 27 Apr 2022 19:25:35 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 19B7B29415 for ; Wed, 27 Apr 2022 23:25:35 +0000 (UTC) X-FDA: 79404243030.02.BBDD98F Received: from mail-ej1-f41.google.com (mail-ej1-f41.google.com [209.85.218.41]) by imf15.hostedemail.com (Postfix) with ESMTP id 51EDEA005B for ; Wed, 27 Apr 2022 23:25:29 +0000 (UTC) Received: by mail-ej1-f41.google.com with SMTP id i19so6234873eja.11 for ; Wed, 27 Apr 2022 16:25:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:reply-to:references:mime-version :content-disposition:in-reply-to:user-agent; bh=uqIFu7EeA0k0844KjQHJLQmVplnSyfO2hZwf/+uLtpI=; b=QkFBc30aN74Ttg1EUqNKGcSVoL+TM0J51q8ExCwd/at9jByjfHkXuvjvguQzb7d4Jj pad5cncLRpCgDPO0JU3juI28zjloiO77YX2SEy0cxZkbfb0gT+eaPRcKJrxjV0p/JtmX GJ0/xKJgcenkCjndPmz+SFn1ogw4V6DXOSpHPzobcIlFZfgEWS2iDNV9OHGl0axELlBQ 6NaUyrGwo7LAUTEpXMW+2DKZQqA2pRM2bHjOnl20ltiXoD0irAw0XutA1DIZJiAFlSY6 rc6gsYpHM90P8gEoUDNfOIWtgapoKe6FEovlrQJGlOlZKrFssDbwfdRFds7MgvVpiChU vGEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:reply-to :references:mime-version:content-disposition:in-reply-to:user-agent; bh=uqIFu7EeA0k0844KjQHJLQmVplnSyfO2hZwf/+uLtpI=; b=yglIJmENt6c0JtqSI9xsA1C88YKJSgocVzuUIxlZ3QrtLAEi+/0Y25mVHlh4QDS+S3 fF/kJaYJEZ4pIKExyMUVS2YC31NQXbcj1oUwM2NaX+q3Q6YVa6veSLm/2NPVbm1edLJO kiTRJOuUxWNIErsa/3BIXRTK1o4GBKYAm80Fy79HQGW7t9SNyDPmR6aRpqWsMpA+iWt7 MCHN/caTTGG3VDD6CFVIJUYQUu1TC4VWKgsDYcet+IyVpG4VFGKwbuEY1/Aa1raee/nn kDMVoz/8ji5yQZ0BiKGahPVM2iVk004DqfPStL+UYqwmxztZTz0fC0bMbaZQJo0VgOpA eGrA== X-Gm-Message-State: AOAM530C9qrW3AMbCm9/W9oXEteFcL7OjSuLo2UTgL8oZuvqno8ExPl2 Rio0B8nwEWjgzZgKiXbsDBA6xcvVArI= X-Google-Smtp-Source: ABdhPJwWKbtqfTs2g+MI1MLUpclPzaVthmHan9pXQcrjUS2z4oF+AkZW43XiC4LDVH2i4/evfXG+Zw== X-Received: by 2002:a17:906:52ca:b0:6ef:907e:53c8 with SMTP id w10-20020a17090652ca00b006ef907e53c8mr28705413ejn.761.1651101933127; Wed, 27 Apr 2022 16:25:33 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id e26-20020aa7d7da000000b0042617ba63ccsm386719eds.86.2022.04.27.16.25.31 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 27 Apr 2022 16:25:31 -0700 (PDT) Date: Wed, 27 Apr 2022 23:25:31 +0000 From: Wei Yang To: Andrew Morton Cc: Wei Yang , linux-mm@kvack.org Subject: Re: [PATCH 2/3] mm/vmscan: filter empty page_list at the beginning Message-ID: <20220427232531.5ab7veh3d4mlu73d@master> Reply-To: Wei Yang References: <20220426021743.21007-1-richard.weiyang@gmail.com> <20220426021743.21007-2-richard.weiyang@gmail.com> <20220426144725.1ed8a96638b33c38cb961aa9@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220426144725.1ed8a96638b33c38cb961aa9@linux-foundation.org> User-Agent: NeoMutt/20170113 (1.7.2) X-Rspamd-Queue-Id: 51EDEA005B X-Stat-Signature: mj3d1i34kmtduj8761cr5djrsqdapmar X-Rspam-User: Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=QkFBc30a; spf=pass (imf15.hostedemail.com: domain of richard.weiyang@gmail.com designates 209.85.218.41 as permitted sender) smtp.mailfrom=richard.weiyang@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam09 X-HE-Tag: 1651101929-918237 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, Apr 26, 2022 at 02:47:25PM -0700, Andrew Morton wrote: >On Tue, 26 Apr 2022 02:17:42 +0000 Wei Yang wrote: > >> node_page_list would always be !empty on finishing the loop, except >> page_list is empty. >> >> Let's handle empty page_list before doing any real work including >> touching PF_MEMALLOC flag. > >Please see >https://lkml.kernel.org/r/20220425111232.23182-3-linmiaohe@huawei.com Aha, I have thought about this. The following change is still valid, could I rebase on top of this? > >I'll skip this patch. -- Wei Yang Help you, Help me