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SubjectRe: [PATCH v2 01/46] mm: Add folio_to_pfn()
On Wed, Jun 23, 2021 at 08:49:55AM +0100, Christoph Hellwig wrote:
> On Tue, Jun 22, 2021 at 01:15:06PM +0100, Matthew Wilcox (Oracle) wrote:
> > The pfn of a folio is the pfn of its head page.
> >
> > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
>
> Maybe add a kerneldoc comment stating that?

/**
* folio_to_pfn - Return the Page Frame Number of a folio.
* @folio: The folio.
*
* A folio may contain multiple pages. The pages have consecutive
* Page Frame Numbers.
*
* Return: The Page Frame Number of the first page in the folio.
*/

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