linux-kernel - Re: [PATCH v3 2/2] mm: convert do_set

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Message-ID: <5988076f-90c1-492d-aa44-b2ca3882923c@redhat.com>
Date: Mon, 12 May 2025 10:04:06 +0200
From: David Hildenbrand <david@...hat.com>
To: Baolin Wang <baolin.wang@...ux.alibaba.com>, akpm@...ux-foundation.org,
 willy@...radead.org
Cc: hannes@...xchg.org, lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com,
 npache@...hat.com, ryan.roberts@....com, dev.jain@....com, ziy@...dia.com,
 vbabka@...e.cz, rppt@...nel.org, surenb@...gle.com, mhocko@...e.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] mm: convert do_set_pmd() to take a folio

On 12.05.25 04:57, Baolin Wang wrote:
> In do_set_pmd(), we always use the folio->page to build PMD mappings for
> the entire folio. Since all callers of do_set_pmd() already hold a stable
> folio, converting do_set_pmd() to take a folio is safe and more straightforward.
> 
> In addition, to ensure the extensibility of do_set_pmd() for supporting
> larger folios beyond PMD size, we keep the 'page' parameter to specify
> which page within the folio should be mapped.
> 
> No functional changes expected.
> 
> Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Reviewed-by: Zi Yan <ziy@...dia.com>

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

-- 
Cheers,

David / dhildenb