linux-kernel - Re: [PATCH v2 1/2] mm/huge_memory: move unrelated code out of __split_unmapped

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Message-ID: <89bf7747-86f7-46c0-9252-9530762f910c@nvidia.com>
Date: Mon, 14 Jul 2025 11:15:16 +1000
From: Balbir Singh <balbirs@...dia.com>
To: Zi Yan <ziy@...dia.com>, David Hildenbrand <david@...hat.com>,
 linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>, Hugh Dickins
 <hughd@...gle.com>, Kirill Shutemov <k.shutemov@...il.com>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Baolin Wang <baolin.wang@...ux.alibaba.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, Nico Pache <npache@...hat.com>,
 Ryan Roberts <ryan.roberts@....com>, Dev Jain <dev.jain@....com>,
 Barry Song <baohua@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mm/huge_memory: move unrelated code out of
 __split_unmapped_folio()

On 7/12/25 04:23, Zi Yan wrote:
> remap(), folio_ref_unfreeze(), lru_add_split_folio() are not relevant to
> splitting unmapped folio operations. Move them out to the caller so that
> __split_unmapped_folio() only handles unmapped folio splits. This makes
> __split_unmapped_folio() reusable.
> 
> Convert VM_BUG_ON(mapping) to use VM_WARN_ON_ONCE_FOLIO().
> 
> Signed-off-by: Zi Yan <ziy@...dia.com>

Acked-by: Balbir Singh <balbirs@...dia.com>