linux-kernel - Re: [PATCH v5 3/5] arm64: mm: support batch clearing of the young flag for large folios

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Message-ID: <424b2acc-68b2-49e0-921e-08451ce5a30d@kernel.org>
Date: Mon, 9 Feb 2026 10:02:08 +0100
From: "David Hildenbrand (Arm)" <david@...nel.org>
To: Baolin Wang <baolin.wang@...ux.alibaba.com>, akpm@...ux-foundation.org,
 catalin.marinas@....com, will@...nel.org
Cc: lorenzo.stoakes@...cle.com, ryan.roberts@....com,
 Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org, surenb@...gle.com,
 mhocko@...e.com, riel@...riel.com, harry.yoo@...cle.com, jannh@...gle.com,
 willy@...radead.org, baohua@...nel.org, dev.jain@....com,
 linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 3/5] arm64: mm: support batch clearing of the young
 flag for large folios

On 12/26/25 07:07, Baolin Wang wrote:
> Currently, contpte_ptep_test_and_clear_young() and contpte_ptep_clear_flush_young()
> only clear the young flag and flush TLBs for PTEs within the contiguous range.
> To support batch PTE operations for other sized large folios in the following
> patches, adding a new parameter to specify the number of PTEs that map consecutive
> pages of the same large folio in a single VMA and a single page table.
> 
> While we are at it, rename the functions to maintain consistency with other
> contpte_*() functions.
> 
> Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> ---

Nothing jumped at me :) Reusing contpte_align_addr_ptep() makes it a lot 
clearer.

Reviewed-by: David Hildenbrand (Arm) <david@...nel.org>

-- 
Cheers,

David