From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CO1PR03CU002.outbound.protection.outlook.com (mail-westus2azon11010024.outbound.protection.outlook.com [52.101.46.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 900E426ADC for ; Thu, 12 Feb 2026 16:11:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.46.24 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770912680; cv=fail; b=kLJU5X9qifm847a70k3UFgsGaNykqbj+2Hz0qQZ/skbjE75i/927lCKAy53ab1jzvjFcOvSNTDvACtzXhtCnkDC8mrc0xq1BS/uV8p+vMGOxm9FvJqGMYizADLIdDlPmmSXEGx2qRz8JXuk/t95rJswwQomuZE7hLAFeV/WHkz4= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770912680; c=relaxed/simple; bh=ymMXTDlEahFvkp3TIHKlpkdmysMwKbT5KyUv2bM7yns=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=TYenn0+gFN4e+UUqnZ/igHfxgJJ9/JDOaPeU5Dmw02DXTDDElPI4z2PYjbhaSsKbydvGwUBA2nB1BAYhfFoe/Bbou296DZEWzYOrrb+nG/CnVBAokwnJ00MXlEv1YnbQnlYM8LQFw5A7h6Bm7gDsrc+974PWwusk2a11gRbXqh0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=BGohSnqd; arc=fail smtp.client-ip=52.101.46.24 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="BGohSnqd" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=UQ03saeoNebabWXu0ULNyu6y3OL8HZb1rKRbiF5N+7wRrRGi/IrwcS8mdSEoT7k+HFAhs3EXsRbBh9ma8OrRxMmNOjxOEWVVF2NDjfDEywdMTy6NheF42vK8RLLccCujycD4Zi//v5rWzZT3yQZUKOZkf2lcaOfPEZjQ+IlfmDNkWKlIWHfYPSOA0J30/ebyc3uW8/Ji6buSqOU9x98Y/GUwE7B+2wUYv1RcTKM12CpCcELEn7d5iiSMPVCDPiWT4TykBOgG1vdHwGHQzizr/WM4Qs3rq899lBXqP6kuuOBcioFmegDwGb/YvjwAaZoCQ87VWNs8rrbgurmTzqfQMw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=8oeh7YYEHw1l99rxc2tutg06pjGmwWcaZ0msZtS0RWc=; b=O50iQypwdD2hiLIJY7N3LRzTxguzR4wljxiIMssSU+uPZf81qT2l5AA1m92iMV7dRvNKY62mV3P5AuwuRWRx7k3hLYUHxyxxVL0yW1l/ANM3sPyWo4aQfwC7iphFrdDOEmXoNU7B/x+gEBn5so5gEillaEz+TxZi7gjB2hQgWK+Y1IjJsSpPWIlq2xQFdf2WixiwN1/UDK1GoiFUEXahuTgR5vpUasAA/MWFa7+3k/cUqCHAsYwUMbJlQGyhEMzOb2DqXMqLPu4EBRaU8b6mQVeXH0EAIr3qzb7/7ZdFb1+FRzaHaVcmhGQzrjBkHcP++0UWUq8yK6RbHCGpAdq1Nw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8oeh7YYEHw1l99rxc2tutg06pjGmwWcaZ0msZtS0RWc=; b=BGohSnqd7R+eQPFRLpZduLDde99vRWp63AHhD4+iPmwjQrpTwb/izQB3m4uUh1A7RrRs8L6Kgo6gImjX56GRydxcIbh3Whf98siR64FQ7NE5+kJo92w4nxFC4bULAzYYeuLJyWOWL5nkpCdrTPlVmPqnsP+VIvIPftlls26WWUoZjTW5IQy4VlQt+QHs8a2oEcEJeaGWJ1n9Mkp3X2MnNcGBMfBoSnF//7kQ/MtcMtSbXjqIHbM73ug/BQV+GvkvlLszED0xMtpbSY4rJV4mDtrNJHehMI6+PZC/MCTieHcBSjZ2eTV4Zq1gRhdXBvPOp//z3VB6iVXMILl+xJ+HrA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) by PH7PR12MB5594.namprd12.prod.outlook.com (2603:10b6:510:134::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9611.13; Thu, 12 Feb 2026 16:11:11 +0000 Received: from DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::f01d:73d2:2dda:c7b2]) by DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::f01d:73d2:2dda:c7b2%4]) with mapi id 15.20.9611.008; Thu, 12 Feb 2026 16:11:11 +0000 From: Zi Yan To: Nico Pache Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, aarcange@redhat.com, akpm@linux-foundation.org, anshuman.khandual@arm.com, apopple@nvidia.com, baohua@kernel.org, baolin.wang@linux.alibaba.com, byungchul@sk.com, catalin.marinas@arm.com, cl@gentwo.org, corbet@lwn.net, dave.hansen@linux.intel.com, david@kernel.org, dev.jain@arm.com, gourry@gourry.net, hannes@cmpxchg.org, hughd@google.com, jackmanb@google.com, jack@suse.cz, jannh@google.com, jglisse@google.com, joshua.hahnjy@gmail.com, kas@kernel.org, lance.yang@linux.dev, Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com, mathieu.desnoyers@efficios.com, matthew.brost@intel.com, mhiramat@kernel.org, mhocko@suse.com, peterx@redhat.com, pfalcato@suse.de, rakie.kim@sk.com, raquini@redhat.com, rdunlap@infradead.org, richard.weiyang@gmail.com, rientjes@google.com, rostedt@goodmis.org, rppt@kernel.org, ryan.roberts@arm.com, shivankg@amd.com, sunnanyong@huawei.com, surenb@google.com, thomas.hellstrom@linux.intel.com, tiwai@suse.de, usamaarif642@gmail.com, vbabka@suse.cz, vishal.moola@gmail.com, wangkefeng.wang@huawei.com, will@kernel.org, willy@infradead.org, yang@os.amperecomputing.com, ying.huang@linux.alibaba.com, zokeefe@google.com Subject: Re: [PATCH mm-unstable v1 2/5] mm: introduce is_pmd_order helper Date: Thu, 12 Feb 2026 11:11:01 -0500 X-Mailer: MailMate (2.0r6290) Message-ID: <6137D40C-C781-44DC-BF8F-68EEFF582326@nvidia.com> In-Reply-To: <20260212021835.17755-3-npache@redhat.com> References: <20260212021835.17755-1-npache@redhat.com> <20260212021835.17755-3-npache@redhat.com> Content-Type: text/plain X-ClientProxiedBy: SJ0PR13CA0047.namprd13.prod.outlook.com (2603:10b6:a03:2c2::22) To DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS7PR12MB9473:EE_|PH7PR12MB5594:EE_ X-MS-Office365-Filtering-Correlation-Id: 92a0933e-54b3-4b90-e165-08de6a515643 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014|7416014|7053199007; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?hZ4zk3qXlPw6S84nT60ju0l2zQwnCcr4vTVd8YwRXYBZGWp/1trTP2nQc2rp?= =?us-ascii?Q?qQ6gjRxF3KKxXpqxlszBIwPth3V0CWku7JH54rxhyCxSihjUzDW8/ZXSFgsw?= =?us-ascii?Q?GFyxuOwhIjzzpWaXfT/Jk12f8/bsB8LxV4U2yfL1qsqjipf8k7Ko2/ZgEmog?= =?us-ascii?Q?ucEB5WOz7JXi38UyEwdQCt33dCE68G3UJFrGX/3XS59EYxIC+0QSN6P6FTQ0?= =?us-ascii?Q?syAsnjZpUnAf/jRfuqbUdrqHu89EV2XGNZjYYejVkQHyd2fqF6y5DUK7MdQ+?= =?us-ascii?Q?BY6smuwplMf7I22AcQiu74345ykXpn9aHAb3/hFlHyR9Qktvs4a0thgE6G8M?= =?us-ascii?Q?11xvH86cgiukGe3Rf+ziORru412/hzIoQSuo0Nv614E8E71uHkCoIx4FZgHR?= =?us-ascii?Q?uKGonT5Em2uko86G8//2O9zMDolgJV+vQ9hxp97gAx+lenTRsFwlb4QHP04+?= =?us-ascii?Q?R0PALHzy32BZNhmdK43ulf42fXnMp4tgAo2DpQHcj5qCqcqbCJtALunZyN1/?= =?us-ascii?Q?jP9pMEvRduC8Aq3/EMmvzUL524g+2Vp5FIp06Q0lXIdrudLogWkXNft9jPXz?= =?us-ascii?Q?QIxgvVw3AWacdPNjYU/6drr+xwch6/toHRJc+O0yRGtOS69Saf4RWW9OypXe?= =?us-ascii?Q?wy8Z60OHEUC9+5Z0lBv0tNhBbnlS4+izKCCgVMZ4DSsLMx6tUxVcY2Eito21?= =?us-ascii?Q?7/r9fsyW5ncp3lowNV5rhqHJoKGvyM7Wl5HKMx6phJG7uVcEhsXefb7Rg2qx?= =?us-ascii?Q?rDDMZpSwyUkpO3so6rRlm3323BbsnS/SpeoUqly1Jiw3Hc/SLfzDaBUa4PEq?= =?us-ascii?Q?Tlyp9SsAtFn9rn7QznTOVbYdZWxbdmUF+XT2ojHUl/AKjS6usSaKahALusi6?= =?us-ascii?Q?JWZ2cHDCOjcS1vJU0L1EyuHC/+uyuFqHn4T5SjwXDcnq4zEkJWMAQC0LVXHU?= =?us-ascii?Q?Ow4MCn6OhN+vQX0rSjA4s5cka9S8jC+nw6NZgK8AAqxjz5z0keRzXyIdVfrR?= =?us-ascii?Q?eiimYbrSEqUxZFMqYWdP4rZpUFuif3zPeIMHFGSq/MG94DGGS7Pr/V8qCuwm?= =?us-ascii?Q?Ub2fGolS++W2bikoC40NDxGT7NBlOCGYN+B7bGN5D4qcMZT2EuluzYqgptRZ?= =?us-ascii?Q?GW1gaeZIsukwOPxIijsXSe/Ce+5Gr8tNcQsQU7EBuA7NYv8Qlmqaz0phY8Ew?= =?us-ascii?Q?oeXl/DTMTfJkn9wzi8cHvlRnEdYcHu5zi+iz9GZWRV/VZIkYGVgaI6JU/7SP?= =?us-ascii?Q?baAFHFmtoxpi2nWAWSa9G7CJH0ZoN+CTWy+s85qwT0rAoKvPVk1w4wFQlEMs?= =?us-ascii?Q?daKJWFFrBmRD6yHzGFAewvGcOFiTvk7lMIL9dWhP+fTgYqpkwuXsJpXLezvO?= =?us-ascii?Q?G3sbwyvFfiVsEhCOtBktlmz5kIcD5na2GCbfpn0cnBcLLa+3Dskc+X/ZVYC8?= =?us-ascii?Q?O70v18liCHheOSZTKX1hlqWOqDoH9johgjOajziDurNVmdyslq0g8eVcyqfl?= =?us-ascii?Q?JuP7u7zq/OxeGcZfA+EqYADdf9ESvA9YdUYVsbNhB0J0aHepazjCHdbDwZay?= =?us-ascii?Q?LEa57kh+dh7VdXrpjwM=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS7PR12MB9473.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(376014)(7416014)(7053199007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?PLNBhv4IKEt+aAgzj+Qa+4U2dcMdCnthsJBcLs1qfXH1D5viy4SZiqW+N+iw?= =?us-ascii?Q?uG0Wsn0FcRkUfpMOmqmYKWpuX0DLja5K2IyZJWEiJo7w7oMNxpb9UbolQwbp?= =?us-ascii?Q?fQLEASL4xfbHEwsUVjxbgTiNQN/YKDr8oivnKtAUnKaTR+04bNeNulLRT6ki?= =?us-ascii?Q?p3YaBNaIwM57Q2NUT25azJsS6R4taC705mhmjwZwAR0Go8/9KbWA0bCj34AK?= =?us-ascii?Q?3rw7nfhXK70w7R3yyXaYUI47zfJNeHFjrff9tltDJ+WWg2TeonLmnnroKPkJ?= =?us-ascii?Q?xVxcaF972sud3uFpjZKANVuervxlBA2sm3OT57IQjFSLhsH2we86EHVrp/qG?= =?us-ascii?Q?5gcvEkaTNa9Q+OHI+N/7+Rb8GYZttHsHAJYRsg7+6qlo+T+dHb27UmeFW9+K?= =?us-ascii?Q?OrwwKHd1+/lnJ7YeE95c78lR6/Lu9E7Y973PIGS1Q/cHYW11tsRbkavyYvHi?= =?us-ascii?Q?Fy2rh9cpAG0s9Vay5ee62mopBV5f5bfpS8JjNiv2AFPDzyDSI/VK/9sP27qy?= =?us-ascii?Q?CWr2hqMIL49Fl9Yoij8ve95GoqOTYYjAM3iRrns+v4u595eUQaO/wQzmMDip?= =?us-ascii?Q?ap1La+ZkYidvtc8fxdaXatck3gE5OjUICoIIom9r5E0g7WTrrxHED3dH4Rb3?= =?us-ascii?Q?Er/aPw13A1PwxTLd4zEp0BiaFCjFn1BDliOJlZVPlqhWrFtzISC1NFLJMMbz?= =?us-ascii?Q?R+LB0CxwMB0SbQq08fIkHVCDF9ECXShd0e5/ANYB4PL0sS/XVQYfs3ohGhgC?= =?us-ascii?Q?xFi9rBJ2PI1q0LEPSuoPGGHKS0De7UTc2ITBQSeQx4RjSn9dfjvcallJSJaK?= =?us-ascii?Q?fuT9EEJbfw7inlaWqs7fobC+YvEVm2vWLYCfpYqR+LyTJ2FzB8a5jH83MKOr?= =?us-ascii?Q?8bNRgI/6FAhyeDl7yEZiTi4S0VVeXGxGIwuVeaZR7OoiojNH42Wx42ps1J43?= =?us-ascii?Q?g1wRtn/j4PzAtPr3ZFi7td7fc43sWdNe6t5kgXfYpFNNwnfOslFn6+9cKjGl?= =?us-ascii?Q?GMkUa0nSw3jLmbX/2QdWSRJZKhMiZOITBihugOl6dTt3o4xXT9/INOuGAeXQ?= =?us-ascii?Q?cqiiqJkOKvAewW7ZxrZD7CtPM0CnMmyUD0owZ84e4F6248TEeb5FYcIGBrkz?= =?us-ascii?Q?sIW1UHXdJFuSZEIFYbHOgOOIxg571MUk5Vw848IvJ1OYk7aWhnp0phbCOsOj?= =?us-ascii?Q?7I9e0ZsWmN/bS3wLHJG5j1j34tSB9rqK7m2l677thSDw+YfGr6zpO0sHO/+i?= =?us-ascii?Q?5MmFnX07mEiIT3701Ku0SvRoXvWnXI7b/AQJTJLyjJr/NTrEpggcRyI9dw46?= =?us-ascii?Q?m6oMoRwMGuOcTe8+EcyG7tlm2YVhhhGQYb8/oyyXR/m0Sq9f11Yb8xh1bI9R?= =?us-ascii?Q?oNc5BJqHpBxzHGQkjWK3zIt1O3lolnNtUed9xYpSvVDIkq85J+4N4wZRFERW?= =?us-ascii?Q?mRZcRGxO3KXf44VSBX2LCYqt9wD8zYetr4dR8Ji/D76a9DFjdRYQR+uH011z?= =?us-ascii?Q?U4Y7Ij6QG1Ox0Gz2yrIMAxmrWVtdA6bgbe1fLsv4IKM43U/YOOPRSWOQLRwP?= =?us-ascii?Q?BF4+8jyF8WHtTS1JZAsz67UyTlkPXHFtArdJ2twhFYFRJ/e486BfyU3EVqYy?= =?us-ascii?Q?I0gQMygItsVBV2psTuzZN9xbOBFSGdT4jonwbPkoWbff9XG57NggDkwpSwXw?= =?us-ascii?Q?1fx4n3+E//xqRkfFS6lHEDw43ampiNH9gvQY1eSEjYbWbB88?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 92a0933e-54b3-4b90-e165-08de6a515643 X-MS-Exchange-CrossTenant-AuthSource: DS7PR12MB9473.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Feb 2026 16:11:10.7127 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: qfXAeZMs8dKV4ow3dnrsbQrZXaXd6fbKtDI4Jze3qIQ4Yyg4S6hG2XgZsOkNbbf6 X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5594 On 11 Feb 2026, at 21:18, Nico Pache wrote: > In order to add mTHP support to khugepaged, we will often be checking if a > given order is (or is not) a PMD order. Some places in the kernel already > use this check, so lets create a simple helper function to keep the code > clean and readable. > > Reviewed-by: Lorenzo Stoakes > Suggested-by: Lorenzo Stoakes > Signed-off-by: Nico Pache > > arches# pick b3ace8be204f # mm/khugepaged: rename hpage_collapse_* to collapse_* > --- > include/linux/huge_mm.h | 5 +++++ > mm/huge_memory.c | 2 +- > mm/khugepaged.c | 4 ++-- > mm/mempolicy.c | 2 +- > mm/page_alloc.c | 2 +- > 5 files changed, 10 insertions(+), 5 deletions(-) > LGTM. Reviewed-by: Zi Yan Best Regards, Yan, Zi