2021-01-28 07:06:04

by Matthew Wilcox

[permalink] [raw]

Subject: [PATCH v3 02/25] mm: Add folio_pgdat

---

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

2021-03-04 05:23:07

by Zi Yan

[permalink] [raw]

Subject: Re: [PATCH v3 02/25] mm: Add folio_pgdat

---

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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