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 A19A9CA101F for ; Wed, 10 Sep 2025 07:21:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id AB2D36B000E; Wed, 10 Sep 2025 03:21:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A8A8D6B0010; Wed, 10 Sep 2025 03:21:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9C7636B0011; Wed, 10 Sep 2025 03:21:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 874276B000E for ; Wed, 10 Sep 2025 03:21:46 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 0D9021DF289 for ; Wed, 10 Sep 2025 07:21:46 +0000 (UTC) X-FDA: 83872495812.06.FA50347 Received: from out-170.mta0.migadu.com (out-170.mta0.migadu.com [91.218.175.170]) by imf08.hostedemail.com (Postfix) with ESMTP id 040CB160007 for ; Wed, 10 Sep 2025 07:21:43 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=R1JsHXZK; spf=pass (imf08.hostedemail.com: domain of lance.yang@linux.dev designates 91.218.175.170 as permitted sender) smtp.mailfrom=lance.yang@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1757488904; 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=OAv5/wmgEhBxyGGZDq9dVoGWNpR4NISRNE5iBQbxwr0=; b=f9SDCgErIhhul+5mVwXEGuX9doa8VGj87e6/1yYHNaJmBzUOVy4QhvJrINoP06I+gGeaeV 0N4pZ6Mj/BIEXdyLb2/eUgyMcjSISpz7xpCurLiVKovNt5HGfGM2FLNFF2kLKPn9gg62iA wYpd/gTGpWgvD6CQlrtXHtTFZ23mz+0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1757488904; a=rsa-sha256; cv=none; b=RvGZDxfnbl492DHVfVM+o0l9GpDHO/7nIOfa0uxXjP+9JAlE2Zh4pPnlHTE0Wee2SBN5K2 cYGtlHnz4PjfKz/Y8N+yMgJTE20NKWLSc+WLmpk1UouQhWeTEUPoAEF6n0SKJBt5tZDXeR F5/zuIdpI5Z97JtDq4qB+lr9JZXslsk= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=R1JsHXZK; spf=pass (imf08.hostedemail.com: domain of lance.yang@linux.dev designates 91.218.175.170 as permitted sender) smtp.mailfrom=lance.yang@linux.dev; dmarc=pass (policy=none) header.from=linux.dev Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1757488901; 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=OAv5/wmgEhBxyGGZDq9dVoGWNpR4NISRNE5iBQbxwr0=; b=R1JsHXZKAHoopuh+8xShMw+SCrTjEhON3EEyKfiPutR/YewjydNo7iet+AGgETh5L8cOdV CTPIgJj9fQOUYNO3NJF33I0UgFNMGet3CwULZHpxHeAwq1kNqNk3CFfpPOKoptodNjwyad 2dN15XdyCZggvLJMdKDfVpniXg2NprI= Date: Wed, 10 Sep 2025 15:21:29 +0800 MIME-Version: 1.0 Subject: Re: [PATCH v7 mm-new 01/10] mm: thp: remove disabled task from khugepaged_mm_slot Content-Language: en-US To: Yafang Shao Cc: bpf@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, Lance Yang , shakeel.butt@linux.dev, rientjes@google.com, ast@kernel.org, gutierrez.asier@huawei-partners.com, 21cnbao@gmail.com, daniel@iogearbox.net, ameryhung@gmail.com, corbet@lwn.net, andrii@kernel.org, willy@infradead.org, usamaarif642@gmail.com, hannes@cmpxchg.org, dev.jain@arm.com, baolin.wang@linux.alibaba.com, ziy@nvidia.com, lorenzo.stoakes@oracle.com, david@redhat.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, npache@redhat.com, akpm@linux-foundation.org References: <20250910024447.64788-1-laoar.shao@gmail.com> <20250910024447.64788-2-laoar.shao@gmail.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Lance Yang In-Reply-To: <20250910024447.64788-2-laoar.shao@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Stat-Signature: umuimwsu474nxbo1wrsaxmqhiwg6ktcn X-Rspam-User: X-Rspamd-Queue-Id: 040CB160007 X-Rspamd-Server: rspam10 X-HE-Tag: 1757488903-772698 X-HE-Meta: U2FsdGVkX1/WgZH2B9SvE4S56XYHR2pUeYu3CwjUzyheLE6GTtLIxLucT5Vxjttfgj06bnjV0k9odOm/BpjfQWaUEpLkDuvgNThiXr0kS+g0mDjkML0I4/9X//CBthQuvQYi6hJlJmfh0Yjh4nEXOThXyjaUoMfWK7rhMcYbQOCgGKcsBCfSwb34t1BYStxLO9+7vTAoq0dKPSzeGVoJcGerFy4OQB3DLbzwJz4Gyg1wY0n3FSaJ5PCA2vjpfK2nHxM5nvySFEsOgvZyQXTxyx6nvzWuBVQIbRzIGjxNZwjuhJEuHRO1jkn8zNOygWy2N0mlPFCj2EDgcHVtmcNgRLQkDvLFnbw6+RpbTBAty7diP86T24okXMSlwGra60/Fr/mAzZ3v48EfigEtdNoFPkDVNi+1WFl4Qkuy1U9YGYnkHexwU8NWCYSM1fl/CczgVIw5dXRdJ+wQpgT4itPIJYWWVNsRYt1AdFcDbCTXOAaOdRJQAJj9WiM2NMyG4GFu1KXNPd0wH1hgP7o2KqECl7hRfegeY5LZibrFrcS+6kpvD1kZ3++KUmFLTlPqvAkaa3SeD6y0KmqEI+Mrb/ovSd7jRNxPJDeXauxHMZyf4EhLAYRkzgTXeTxEVt/DzMIJtTHkJYBetg2nc5Ty/hJXbspAh7CNc/kC0sSM0jK8HBk3R4v9p/aXENf0VgfS78UIeEPUWpY7/6nmsGGPSQ4yCyiwUki1YKUre5auKTu2zPHaZt6EBn/H8fcYbssaqmxs1n1teCDwuAtcKNtC5QTSsFDSQLZLzd2qDmqD+nHSTVX/DQCwNLxQTOLx942mFG42P9hyTNvpnbzo35PhPv+TiipETfkL2hzWzkeXDUTp4Roydl1li8BugXQAwoK/c1iUsv+RqpufpFX3QIUbhCRe3cptCGwKGitU6dM7QZlK9AnWj7De1AC6nIHZVg9Vv94xs4pn2dPl3tomG0qyuY7 NC1lXAUj P2fTn2sbiBmqgffRHoka+z8z5WsR36PCwQO0rWWGoXD9KufBI+MajuzUIvebTTcgKh56PMvupIbB4amfFPDNcpo86mOrmXa7Ed9uht3jOPHDFbM/qwMC50wchAIWa3UVPzX8ZdaYP1dJFTPv22VR/LZK8G/uIwNYUsjanc10/RdfLz4tNjbLp0pTCyFca4aVIr9DznB8TBDfqFkPpvjuufRwboDwpVzPbmYR7evlafeUttFizbMA2qsOLpT0YXH+LcMf9dPiw5/Pp+mINcO3VLhz/7tgEfiKOoBbmuwhaZ+VW7W4BTY8PEmobuCk2/kMn7ZKx8Qm5SL3P5rnsmrOVFrM5ROWNljY+Wof6 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 2025/9/10 10:44, Yafang Shao wrote: > Since a task with MMF_DISABLE_THP_COMPLETELY cannot use THP, remove it from > the khugepaged_mm_slot to stop khugepaged from processing it. > > After this change, the following semantic relationship always holds: > > MMF_VM_HUGEPAGE is set == task is in khugepaged mm_slot > MMF_VM_HUGEPAGE is not set == task is not in khugepaged mm_slot > > Signed-off-by: Yafang Shao Acked-by: Lance Yang Cheers, Lance