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b=ExNl/8nnrA8GtF7ZTfsDKGNfxx6Og1kdpj6uEa8iGZvbsDkwftLidNLPmO4R5pJzM11xIm4lL5S9eYNgTnIyOdkSvv/NbApy0TWy2/h9np95jYeuynawHdEQYWRb3z5IwbEym7um+uhlqFAH1j+hk0us7VduApTBmIR7chftYoA= Received: from 30.74.144.144(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0WdK.fGG_1749438403 cluster:ay36) by smtp.aliyun-inc.com; Mon, 09 Jun 2025 11:06:44 +0800 Message-ID: <4a2c359e-79d9-447b-a43e-164333d08319@linux.alibaba.com> Date: Mon, 9 Jun 2025 11:06:42 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 12/12] Documentation: mm: update the admin guide for mTHP collapse To: Nico Pache , Dev Jain Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, david@redhat.com, ziy@nvidia.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, corbet@lwn.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, akpm@linux-foundation.org, baohua@kernel.org, willy@infradead.org, peterx@redhat.com, wangkefeng.wang@huawei.com, usamaarif642@gmail.com, sunnanyong@huawei.com, vishal.moola@gmail.com, thomas.hellstrom@linux.intel.com, yang@os.amperecomputing.com, kirill.shutemov@linux.intel.com, aarcange@redhat.com, raquini@redhat.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, tiwai@suse.de, will@kernel.org, dave.hansen@linux.intel.com, jack@suse.cz, cl@gentwo.org, jglisse@google.com, surenb@google.com, zokeefe@google.com, hannes@cmpxchg.org, rientjes@google.com, mhocko@suse.com, rdunlap@infradead.org, Bagas Sanjaya References: <20250515032226.128900-1-npache@redhat.com> <20250515032226.128900-13-npache@redhat.com> From: Baolin Wang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: B4951A0005 X-Stat-Signature: kp443jrqhp9acz68x8sbb9fsofte1exh X-Rspam-User: X-HE-Tag: 1749438409-5572 X-HE-Meta: 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 w7ca8oHx 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 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 2025/6/9 03:50, Nico Pache wrote: > On Sat, Jun 7, 2025 at 8:35 AM Dev Jain wrote: >> >> >> On 07/06/25 6:27 pm, Nico Pache wrote: >>> On Sat, Jun 7, 2025 at 12:45 AM Dev Jain wrote: >>>> >>>> On 15/05/25 8:52 am, Nico Pache wrote: >>>> >>>> Now that we can collapse to mTHPs lets update the admin guide to >>>> reflect these changes and provide proper guidence on how to utilize it. >>>> >>>> Reviewed-by: Bagas Sanjaya >>>> Signed-off-by: Nico Pache >>>> --- >>>> Documentation/admin-guide/mm/transhuge.rst | 14 +++++++++++++- >>>> 1 file changed, 13 insertions(+), 1 deletion(-) >>>> >>>> diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst >>>> index dff8d5985f0f..5c63fe51b3ad 100644 >>>> --- a/Documentation/admin-guide/mm/transhuge.rst >>>> +++ b/Documentation/admin-guide/mm/transhuge.rst >>>> >>>> >>>> We need to modify/remove the following paragraph: >>>> >>>> khugepaged currently only searches for opportunities to collapse to >>>> PMD-sized THP and no attempt is made to collapse to other THP >>>> sizes. >>> On this version this is currently still true, but once I add Baolin's >>> patch it will not be true. Thanks for the reminder :) >> >> You referenced Baolin's patch in the other email too, can you send the link, >> or the patch? > > He didn't send it to the mailing list, but rather off chain to all the > recipients of this series. You should have it in your email look for > > Subject: "mm: khugepaged: allow khugepaged to check all anonymous mTHP > orders" and "mm: khugepaged: kick khugepaged for enabling > none-PMD-sized mTHPs" You can find them at the following link: https://lore.kernel.org/all/ac9ed6d71b439611f9c94b3506a8ce975d4636e9.1748435162.git.baolin.wang@linux.alibaba.com/