Re: [PATCH v10 14/33] mm/filemap: Add folio_offset and folio_file_offset

[Vlastimil Babka]

On 5/11/21 11:47 PM, Matthew Wilcox (Oracle) wrote:
> These are just wrappers around their page counterpart.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Acked-by: Jeff Layton <jlayton@xxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>

> ---
>  include/linux/pagemap.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
> index 3b82252d12fc..448a2dfb5ff1 100644
> --- a/include/linux/pagemap.h
> +++ b/include/linux/pagemap.h
> @@ -558,6 +558,16 @@ static inline loff_t page_file_offset(struct page *page)
>  	return ((loff_t)page_index(page)) << PAGE_SHIFT;
>  }
>  
> +static inline loff_t folio_offset(struct folio *folio)
> +{
> +	return page_offset(&folio->page);
> +}
> +
> +static inline loff_t folio_file_offset(struct folio *folio)
> +{
> +	return page_file_offset(&folio->page);
> +}
> +
>  extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
>  				     unsigned long address);
>  
>