linux-kernel - Re: [PATCH v5 12/12] Documentation: mm: update the admin guide for mTHP collapse

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Message-ID: <90677959-9ab2-438b-96b3-4024ea1a5c65@redhat.com>
Date: Tue, 29 Apr 2025 19:15:13 +0200
From: David Hildenbrand <david@...hat.com>
To: "Christoph Lameter (Ampere)" <cl@...two.org>,
 Nico Pache <npache@...hat.com>
Cc: linux-mm@...ck.org, linux-doc@...r.kernel.org,
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Subject: Re: [PATCH v5 12/12] Documentation: mm: update the admin guide for
 mTHP collapse

On 29.04.25 18:38, Christoph Lameter (Ampere) wrote:
> On Mon, 28 Apr 2025, Nico Pache wrote:
> 
>>   THP can be enabled system wide or restricted to certain tasks or even
>>   memory ranges inside task's address space. Unless THP is completely
>>   disabled, there is ``khugepaged`` daemon that scans memory and
>> -collapses sequences of basic pages into PMD-sized huge pages.
>> +collapses sequences of basic pages into huge pages.
> 
> huge pages usually have a fixed size like 2M and are tied to the page
> table levels.
> 
> Would it not be advisable to use a different term here like "large folio"
> or "mTHP sized folio" or something like that?

"Traditional THPs or mTHPs (both, currently represented as "large 
folios" in the kernel).

-- 
Cheers,

David / dhildenb