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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2AE82ECD6F0 for ; Thu, 12 Feb 2026 08:46:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6F7E96B0005; Thu, 12 Feb 2026 03:46:02 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6AED96B0089; Thu, 12 Feb 2026 03:46:02 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 59D986B008A; Thu, 12 Feb 2026 03:46:02 -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 4B4C36B0005 for ; Thu, 12 Feb 2026 03:46:02 -0500 (EST) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id B5CAA1B405D for ; Thu, 12 Feb 2026 08:46:01 +0000 (UTC) X-FDA: 84435172122.16.1C91479 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf01.hostedemail.com (Postfix) with ESMTP id 0A68840004 for ; Thu, 12 Feb 2026 08:45:59 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=XJPFMO6B; spf=pass (imf01.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1770885960; 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=MpgRTUIfmhwPsV1DwWIesVOYjg+7JsGFp9FpmcgXtT4=; b=pGUU+e+i/2WEoHpotf1+hZKoFsASX03RQcWbyNpRVtP4HOd9VpgnVQhY/yoq7kAEOEbB5q Tw7dgamp7meaCtzNrDO/HI0M9FLb6/svcZz5j7fSRDwRlbO9dfPPDyE6ZRrFtXcRr4KSV9 AOaqlhWQNdI08IkWL2qlqEP8oWji9g8= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=XJPFMO6B; spf=pass (imf01.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1770885960; a=rsa-sha256; cv=none; b=ZrN6ZnPYLllpTqidcw2/Vn04STtKBfbBvKOaLZ9Jxzhyi66A2q9yZ6YzjkmRh/CeLcwC32 5tAOlz769q+Vak+gc30OgDZIm3dYQ9odm1agGzmOGVZJLCY/A7IzCi7IpsXJDOQ7HFd5mx RNO37qP/pQpvkD1j/W6UkSG46MIeytQ= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 5C5A36013B; Thu, 12 Feb 2026 08:45:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8494C4CEF7; Thu, 12 Feb 2026 08:45:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770885959; bh=/tzkdOLmLMilGxuBdRUu3mmednPk/rfApN1g63hFmME=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=XJPFMO6B+XI3ruG3pcxZDzH88tinRjsM+hw+GkAr3xewaegnZJRRv5c+XnhAUA1oQ IbWP3/qLogeraTc7i0nHHHTMU6cIM+67Xjs6btHJ1vLsQGLuDWhXnICddPN9q82At1 A6Hd1FvKgJN9aaBWuPzqr+Kv0GenITOFBWpQqnVycP4M125W5PIIf29duLens4EzUr ECV4WyXl4xTlDt9wF9V0OJHVSA220imynmQi0qFbVhCjVteufhTt+ppa7m6FCt09zd Dc7HBHOxaTG2o2ORacpcFWSyR1PKpybytvR2l9g8EdRLqvN9ziMtC90gZyrHZF0n9n GdN5Y7JiZuZSw== Message-ID: <1a82c86e-4d3c-43ea-a729-0b11254264f5@kernel.org> Date: Thu, 12 Feb 2026 09:45:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 2/2] mm/memory hotplug/unplug: Optimize zone->contiguous update when changes pfn range To: Mike Rapoport Cc: Tianyou Li , Oscar Salvador , Wei Yang , Michal Hocko , linux-mm@kvack.org, Yong Hu , Nanhai Zou , Yuan Liu , Tim Chen , Qiuxu Zhuo , Yu C Chen , Pan Deng , Chen Zhang , linux-kernel@vger.kernel.org References: <20260130163756.2674225-1-tianyou.li@intel.com> <20260130163756.2674225-3-tianyou.li@intel.com> <3cb317fa-abe0-4946-9f00-da00bade2def@kernel.org> <6ea2dbce-c919-49d6-b2cb-255a565a94e0@kernel.org> <2cb55d76-4da7-4ebe-b23b-0abbc4d963f3@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: aegncoodwexkdn9tm7opduu5458j1bn1 X-Rspamd-Queue-Id: 0A68840004 X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1770885959-247721 X-HE-Meta: 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 vTsJgbzH hW5g0X4w3ttLBRSJDTa09SVfpyTi6gr2+Zixpyw+fyeFHx/dZtXjpry5CFoI7BwIZyA2dThJZzx1+WC7A3I3jY6gjUCOrsYAfmb4Zzv/nuwwciI5l40UjThkFaTvc5EYYQtrA0CMxQXOtRO5NWtfrOH4MozWigQj2rkYywchqt/EbHbZCVSqvkNzNFu9ISCYXOQvddPNbi7Og1pi7TkLyd6taIi6l+AaahfXCbVogLQB+KYHeEFkBq838eZIYBpjjAaJBFigc8EWtKe0lgdCriJbcUMs+aNjtNxA/hNvnhOa6pGoB93tx9+O7Y/+57DRjbIIJruRSXYFu8lY= 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: List-Subscribe: List-Unsubscribe: On 2/12/26 09:32, Mike Rapoport wrote: > On Wed, Feb 11, 2026 at 01:19:56PM +0100, David Hildenbrand (Arm) wrote: >>> >>> Maybe pages_with_memmap? It would stand off from managed, spanned and >>> present, but it's clearer than online IMHO. >> >> offline pages also have a memmap, but that should not be touched as it might >> contain garbage. So it's a bit more tricky :) > > Naming is hard :) > But I still think mentioning memmap there is useful :) pages_with_online_memmap Is a bit mouthful, but that shouldn't really be a problem here. -- Cheers, David