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imf26.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=lcPJ0O2C; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf26.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1787129540; b=sices2CDk5tHIWotOqyfvFFQXx46dH+f77i1EiyhKUrJ7KS2oEYiCpXbASZFutmP3RvAff 30bldQpiHvYTxdYoNBjlUCnG/XP89NM9Z2Lu2HN7/N0UR7TCUGc5OjCsLiAP+ETnlQ8sRm hYHBT18Z3kbh9YvnbMz0dQMaD/j6Cg4= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 9D4AE6020E; Wed, 19 Aug 2026 08:52:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C1501F000E9; Wed, 19 Aug 2026 08:52:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787129539; bh=jZI4offE5WoxR6EMeCVcpsyDREl1sgoUCN9PBz2GkfM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=lcPJ0O2CtA4m74gXkH/+Iyua7pASmkdKrnCwlXwSWNuTLcOUBk62ZfzhZSzhE80IF +WCy+AMjcf40XHPXFilSdUxHh+IS++czStwkvZmFu8pcvYMwIHhTPBPyCXsKvbIDHU X2IAwPa7fu26g+beKAjFvJi4H9CRas0KKzKYmO9xca3+OXB9cLr3CgKz4X1ENmjdy2 0Y6RXFVO7JbTXxzTs/MnxAPiVsxolveaZ4DHt4yiCPBm60+m/oHWpgtVsi653VYcLK oV7eDkbWwKO2G2BEX9NPH1glf3jkHoTEgUau0yYuMDIsk+RCgaM2BOxAR4AfcR/tw9 hvoPaoF7d3VAQ== Message-ID: <206cb1f2-b66c-4b7b-b0ad-14cca9d8e0bd@kernel.org> Date: Wed, 19 Aug 2026 10:52:13 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/1] mm/hugetlb: do not dissolve gigantic pages without runtime support To: Longlong Xia , muchun.song@linux.dev, osalvador@suse.de, akpm@linux-foundation.org Cc: mike.kravetz@oracle.com, mhocko@suse.com, linmiaohe@huawei.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Longlong Xia References: <20260817162039.1511838-1-xialonglong2025@163.com> 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: <20260817162039.1511838-1-xialonglong2025@163.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: f4y45qhiu7m67k3t4gsrncdihxcb6a75 X-Rspamd-Queue-Id: 93F0D140004 X-Rspamd-Server: rspam03 X-Rspam-User: X-HE-Tag: 1787129540-347621 X-HE-Meta: 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 riSmlC47 y5xaAdw2s1opEwzFJDBVYlYyCE21Rl5pRnMXbT/ON8nH17YVjBQGzy1QIw+n9pOAnXXhijdpv2VG3D1M5FmxQeh/Vz62N1TXRo0s0EQoiOp1b63Av+UBBhMmRcpjLZIm4DXOQGOY6OCP/DFYvBQkNgec1EUTUfE9Ca/Qz6E0ilX/j0pd7V4tOaNp5HC9Ri44wKGuFn8hQ7oVrIQecjkpoRoD6ReYuDDZwiLYhDxbZbysxEsA1OPWpDW0ERl0nsUA3Q631 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 8/17/26 18:20, Longlong Xia wrote: > From: Longlong Xia > > dissolve_free_hugetlb_folio() doesn't check hstate_is_gigantic_no_runtime(h) > though remove_hugetlb_folio()/update_and_free_hugetlb_folio() silently > bail for such folios That's odd. Why do they silently skip such folios instead of warning that something unexpected is happening? This screams for a cleanup unless I am missing something :) -- Cheers, David