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 9B3E8C4332F for ; Fri, 18 Nov 2022 22:23:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 30AB48E0002; Fri, 18 Nov 2022 17:23:33 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2BA946B007B; Fri, 18 Nov 2022 17:23:33 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 181FB8E0002; Fri, 18 Nov 2022 17:23:33 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 05D1D6B0078 for ; Fri, 18 Nov 2022 17:23:33 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id CA9F3C0632 for ; Fri, 18 Nov 2022 22:23:32 +0000 (UTC) X-FDA: 80147990664.14.FD7E536 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf16.hostedemail.com (Postfix) with ESMTP id 4F73F180009 for ; Fri, 18 Nov 2022 22:23:32 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 807CDB8255F; Fri, 18 Nov 2022 22:23:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F670C433C1; Fri, 18 Nov 2022 22:23:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1668810209; bh=/+L2NYj/ACH+jT7u7xIw5FkfzhmRB+rhl1d5bnP9ndQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=WOu/knYnjG874+QGB6O6mc5DoO1bffTgpJ7knUlNeNZYm2uJpJmcH7/iJT4HSHckE dirOBSs+Ct5loDn2H9J9YxTOscXrpO5Y9SUqL9liqBR6Fk9CI1076Q9tHWST71XUJw VQcIV0zN+NPXlK/FhQ5Iik1CGlvDvasJGk1pfrOI= Date: Fri, 18 Nov 2022 14:23:27 -0800 From: Andrew Morton To: Hugh Dickins Cc: Linus Torvalds , Johannes Weiner , "Kirill A. Shutemov" , Matthew Wilcox , David Hildenbrand , Vlastimil Babka , Peter Xu , Yang Shi , John Hubbard , Mike Kravetz , Sidhartha Kumar , Muchun Song , Miaohe Lin , Naoya Horiguchi , Mina Almasry , James Houghton , "Zach O'Keefe" , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 0/3] mm,thp,rmap: rework the use of subpages_mapcount Message-Id: <20221118142327.1744cda179ca549eeebc8629@linux-foundation.org> In-Reply-To: References: <5f52de70-975-e94f-f141-543765736181@google.com> <93fa81ae-d848-58c2-9f70-27446bf9baa8@google.com> <20221118140346.b9026301b4ba03e43e15aeca@linux-foundation.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1668810212; a=rsa-sha256; cv=none; b=PEshS2tZpDOFlUiThiD8UHfgYOP8nzp6F/m11UyykIl5nanormA2vCBeLW5N31t7Cd2Q3e couR2TzJIElU1SkZ8eYlpd4qunaG+PVOvpAX99RkJXyAivCIn7QjE76EtnDc7L0cyqFWsL eqpjXkQrGpmBDN0Lo59nkJ+20StdXaQ= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="WOu/knYn"; dmarc=none; spf=pass (imf16.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1668810212; h=from:from:sender: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:dkim-signature; bh=9ArxgrP995QDGrjgJjI6iE19S74OsCueqgy+s9vDMHc=; b=dsO5qW/NY6HQ3ydQz5iYPYBL+FCPzlxSis3YAWmWF5/HjdTTpB8rQFPgvR4kdCzNXh5mwg fiS33ubl+xQHafW7S2mV2FzSS7jfLT8H+7+PQcEO/+Z4ugHUuDLlTKmosmKD5QJd+nOqFA zUaxkQHQh9Fb+Vz+iXoNTT3La3Mt0jo= X-Stat-Signature: ix4jmpefu5b8t19q4sbcw7trioexqruq X-Rspamd-Queue-Id: 4F73F180009 Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="WOu/knYn"; dmarc=none; spf=pass (imf16.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-Rspam-User: X-Rspamd-Server: rspam12 X-HE-Tag: 1668810212-234467 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 Fri, 18 Nov 2022 14:10:32 -0800 (PST) Hugh Dickins wrote: > On Fri, 18 Nov 2022, Andrew Morton wrote: > > On Fri, 18 Nov 2022 12:51:09 -0800 (PST) Hugh Dickins wrote: > > > > > But the first series has not yet graduated from mm-unstable, > > > so if Andrew and/or Kirill also prefer to have them combined into one > > > bit_spin_lock-less series, that I can do. (And the end result should be > > > identical, so would not complicate Johannes's lock_page_memcg() excision.) > > > > I'd prefer that approach. > > I think you're saying that you prefer the other approach, to keep the > two series separate (second immediately after the first, or not, doesn't > matter), rather than combined into one bit_spin_lock-less series. > Please clarify! Thanks, Yes, two separate series. Apologies for the confuddling.