On Thu, Jul 15, 2021 at 04:35:37AM +0100, Matthew Wilcox (Oracle) wrote: > This is the folio equivalent of page_to_pfn(). > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > --- > include/linux/mm.h | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Matthew Wilcox (Oracle) <willy@infradead.org> wrote: > This is the folio equivalent of page_to_pfn(). > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Howells <dhowells@redhat.com>
On 7/15/21 5:35 AM, Matthew Wilcox (Oracle) wrote: > This is the folio equivalent of page_to_pfn(). > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Vlastimil Babka <vbabka@suse.cz>
diff --git a/include/linux/mm.h b/include/linux/mm.h index c6e2a1682a6d..89daae93aa9b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1623,6 +1623,20 @@ static inline unsigned long page_to_section(const struct page *page) } #endif +/** + * folio_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. + */ +static inline unsigned long folio_pfn(struct folio *folio) +{ + return page_to_pfn(&folio->page); +} + /* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */ #ifdef CONFIG_MIGRATION static inline bool is_pinnable_page(struct page *page)
This is the folio equivalent of page_to_pfn(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- include/linux/mm.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)