linux-kernel - Re: [PATCH v9 03/14] khugepaged: generalize hugepage_vma

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Message-ID: <e70399bd-6aa0-4e65-8695-f45ae70dabbc@redhat.com>
Date: Tue, 15 Jul 2025 17:55:34 +0200
From: David Hildenbrand <david@...hat.com>
To: Nico Pache <npache@...hat.com>, linux-mm@...ck.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org
Cc: ziy@...dia.com, baolin.wang@...ux.alibaba.com,
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Subject: Re: [PATCH v9 03/14] khugepaged: generalize hugepage_vma_revalidate
 for mTHP support

On 14.07.25 02:31, Nico Pache wrote:
> For khugepaged to support different mTHP orders, we must generalize this
> to check if the PMD is not shared by another VMA and the order is enabled.
> 
> To ensure madvise_collapse can support working on mTHP orders without the
> PMD order enabled, we need to convert hugepage_vma_revalidate to take a
> bitmap of orders.
> 
> No functional change in this patch.
> 
> Reviewed-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Co-developed-by: Dev Jain <dev.jain@....com>
> Signed-off-by: Dev Jain <dev.jain@....com>
> Signed-off-by: Nico Pache <npache@...hat.com>
> ---

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb