linux-kernel - Re: [PATCH v7 12/12] Documentation: mm: update the admin guide for mTHP collapse

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Message-ID: <b09d7553-c3c6-453a-8e3a-86dc4caeb431@arm.com>
Date: Sat, 7 Jun 2025 20:04:24 +0530
From: Dev Jain <dev.jain@....com>
To: Nico Pache <npache@...hat.com>
Cc: linux-mm@...ck.org, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 david@...hat.com, ziy@...dia.com, baolin.wang@...ux.alibaba.com,
 lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, ryan.roberts@....com,
 corbet@....net, rostedt@...dmis.org, mhiramat@...nel.org,
 mathieu.desnoyers@...icios.com, akpm@...ux-foundation.org,
 baohua@...nel.org, willy@...radead.org, peterx@...hat.com,
 wangkefeng.wang@...wei.com, usamaarif642@...il.com, sunnanyong@...wei.com,
 vishal.moola@...il.com, thomas.hellstrom@...ux.intel.com,
 yang@...amperecomputing.com, kirill.shutemov@...ux.intel.com,
 aarcange@...hat.com, raquini@...hat.com, anshuman.khandual@....com,
 catalin.marinas@....com, tiwai@...e.de, will@...nel.org,
 dave.hansen@...ux.intel.com, jack@...e.cz, cl@...two.org,
 jglisse@...gle.com, surenb@...gle.com, zokeefe@...gle.com,
 hannes@...xchg.org, rientjes@...gle.com, mhocko@...e.com,
 rdunlap@...radead.org, Bagas Sanjaya <bagasdotme@...il.com>
Subject: Re: [PATCH v7 12/12] Documentation: mm: update the admin guide for
 mTHP collapse


On 07/06/25 6:27 pm, Nico Pache wrote:
> On Sat, Jun 7, 2025 at 12:45 AM Dev Jain <dev.jain@....com> 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 <bagasdotme@...il.com>
>> Signed-off-by: Nico Pache <npache@...hat.com>
>> ---
>>   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?

>
> -- Nico
>