Re: [PATCH v1 3/4] mm/rmap: fix two comments related to huge_pmd_unshare()

[Oscar Salvador]

On Fri, Dec 05, 2025 at 10:35:57PM +0100, David Hildenbrand (Red Hat) wrote:
> PMD page table unsharing no longer touches the refcount of a PMD page
> table. Also, it is not about dropping the refcount of a "PMD page" but
> the "PMD page table".
> 
> Let's just simplify by saying that the PMD page table was unmapped,
> consequently also unmapping the folio that was mapped into this page.
> 
> This code should be deduplicated in the future.
> 
> Fixes: 59d9094df3d7 ("mm: hugetlb: independent PMD page table shared count")
> Cc: Liu Shixin <liushixin2@xxxxxxxxxx>
> Signed-off-by: David Hildenbrand (Red Hat) <david@xxxxxxxxxx>

Acked-by: Oscar Salvador <osalvador@xxxxxxx>

 

-- 
Oscar Salvador
SUSE Labs