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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A2FDC4332F for ; Fri, 18 Nov 2022 09:08:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241767AbiKRJIq (ORCPT ); Fri, 18 Nov 2022 04:08:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241782AbiKRJIb (ORCPT ); Fri, 18 Nov 2022 04:08:31 -0500 Received: from mail-qv1-xf30.google.com (mail-qv1-xf30.google.com [IPv6:2607:f8b0:4864:20::f30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B11EDF88 for ; Fri, 18 Nov 2022 01:08:29 -0800 (PST) Received: by mail-qv1-xf30.google.com with SMTP id mi9so2945788qvb.8 for ; Fri, 18 Nov 2022 01:08:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=4jgJCL3sHoSHtEVZaxlQfRVEHYZ212AYWgGq2TLVydQ=; b=a2wpWHTporknCd1s9pPc2LAMPddZOemCMFlzk3MqZj9hClmoNsmS0E8aopvfJ0Pk5O lfFrfDf1DQNA98cj2IqdkeThsGiioaNhdEU8x9FlasQAeG9gv77XVBLgXLtm22tb6ds8 DElvqyoQ5RP2FEbXrxwuJJf5NAcRyBkmwlXZ/Wz3FSGRHEyGEfhZN2hofXa99LgGJOo8 4kCB1BEjbjw2S5SOXetEdh2El/+g2g+xZEF1ZOVe2+LobsueOYobBJxZZboKv7bYMSWt Mr7iNpsDvn+j7ut/QE9PIa52pe8cXOGgIivGMEoYPa7h7RNB0ogvBM8QS2+Gg27TTadd 69Cg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=4jgJCL3sHoSHtEVZaxlQfRVEHYZ212AYWgGq2TLVydQ=; b=BIjUVK4578uoEtcxIBs2JLX6CHFjhoMM+HkEguWlZ9USqpmJnKxwq0dUfoykfX8Nm4 mLpiJy1jRn/VkbuAtF8DkhxNw6DiIlI9baFvQ/bQRfOhIIN8On4jz1O4nG/3FmYqwkHC +E1q3brdo4etMoNg3mmM3YnyqEwJvx2zRmMMS8UmnSPjqxDlc9E3Go0JlT1sdXOz91tq Ik+JurhmYg5WnRFTch5EKZRNEgMrTfS3Cd9sgjyWlITP9YnwfWcolwDjrRawt94QjVgB tTXztecx9tti517oykOK3dp/GKzk044EbjEAZ8NlfBYrPDZtUn78pT10g7x26EdvYux3 6a3Q== X-Gm-Message-State: ANoB5plMvWcSSLCkxmCy3EIQJSHenI+IEAGRbShYBoxeWhrx/WooE4rv GvapEV4b79u5uexIfRgkt/IFJA== X-Google-Smtp-Source: AA0mqf4Vu51irMi7KMNB0pp/d3qI6KcnZMKnFehDL6rPbRalZElCeD38eKKA345/qu0r12lKOEloXA== X-Received: by 2002:a0c:bf0b:0:b0:4b1:a359:c204 with SMTP id m11-20020a0cbf0b000000b004b1a359c204mr5893127qvi.64.1668762508583; Fri, 18 Nov 2022 01:08:28 -0800 (PST) Received: from ripple.attlocal.net (172-10-233-147.lightspeed.sntcca.sbcglobal.net. [172.10.233.147]) by smtp.gmail.com with ESMTPSA id x22-20020a05622a001600b003a57f822157sm1765388qtw.90.2022.11.18.01.08.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Nov 2022 01:08:28 -0800 (PST) Date: Fri, 18 Nov 2022 01:08:13 -0800 (PST) From: Hugh Dickins X-X-Sender: hugh@ripple.attlocal.net To: Andrew Morton 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: [PATCH 0/3] mm,thp,rmap: rework the use of subpages_mapcount In-Reply-To: <5f52de70-975-e94f-f141-543765736181@google.com> Message-ID: References: <5f52de70-975-e94f-f141-543765736181@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus was underwhelmed by the earlier compound mapcounts series: this series builds on top of it (as in next-20221117) to follow up on his suggestions - except rmap.c still using lock_page_memcg(), since I hesitate to steal the pleasure of deletion from Johannes. 1/3 mm,thp,rmap: subpages_mapcount of PTE-mapped subpages 2/3 mm,thp,rmap: subpages_mapcount COMPOUND_MAPPED if PMD-mapped 3/3 mm,thp,rmap: clean up the end of __split_huge_pmd_locked() Documentation/mm/transhuge.rst | 10 +- include/linux/mm.h | 65 +++++++---- include/linux/rmap.h | 12 +- mm/debug.c | 2 +- mm/huge_memory.c | 15 +-- mm/rmap.c | 213 ++++++++++------------------------- 6 files changed, 119 insertions(+), 198 deletions(-) Hugh