Re: [PATCH v2 02/11] mm: factor out adjust_range_hwpoison() from hugetlbfs

["David Hildenbrand (Arm)" <david@kernel.org>]

On 6/17/26 19:25, Jane Chu wrote:
> The functionality and implementation of adjust_range_hwpoison() is
> generic, so factor it out and make it ready for generic use.
> 
> [1] https://lore.kernel.org/linux-mm/aeZwAz6PcdlqSnJ2@casper.infradead.org/
> 
> Suggested-by: Matthew Wilcox <willy@infradead.org>
> Signed-off-by: Jane Chu <jane.chu@oracle.com>
> ---

[...]

> -/*
> - * Check if a given raw @page is HWPOISON in a folio of any kind
> - */
> -bool is_raw_hwpoison_page_in_folio(struct page *page);
> -
>  static inline unsigned long huge_page_mask_align(struct file *file)
>  {
>  	return PAGE_MASK & ~huge_page_mask(hstate_file(file));
> diff --git a/mm/filemap.c b/mm/filemap.c
> index 4e636647100c..a27ce4ad6247 100644
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -2753,6 +2753,37 @@ static void filemap_end_dropbehind_read(struct folio *folio)
>  	}
>  }
>  
> +/**
> + * adjust_range_hwpoison - adjust clean readable range to avoid hwpoison.
> + * @folio: folio that contains hwpoison(s).
> + * @offset: bytes into the folio where subsequent read starts.
> + * @bytes: number of bytes wish to read.
> + *
> + * Return: adjusted total number of bytes starting off @offset that can be

s/off/at/ ?


Apart from that, lgtm

-- 
Cheers,

David