On 28 Jan 2021, at 2:03, Matthew Wilcox (Oracle) wrote: > This is just a convenience wrapper for callers with folios; pgdat can > be reached from tail pages as well as head pages. > > Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> > --- > include/linux/mm.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index f20504017adf..7d787229dd40 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1503,6 +1503,11 @@ static inline pg_data_t *page_pgdat(const struct page > *page) > return NODE_DATA(page_to_nid(page)); > } > > +static inline pg_data_t *folio_pgdat(const struct folio *folio) > +{ > + return page_pgdat(&folio->page); > +} > + > #ifdef SECTION_IN_PAGE_FLAGS > static inline void set_page_section(struct page *page, unsigned long section) > { > -- > 2.29.2
LGTM. Reviewed-by: Zi Yan <[email protected]> — Best Regards, Yan Zi
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