2023-06-13 20:31:29

by Vishal Moola

Subject: [PATCH 2/5] mmzone: Introduce folio_migratetype()

Introduce folio_migratetype() as a folio equivalent for
get_pageblock_migratetype(). This function intends to return the
migratetype the folio is located in, hence the name choice.

Signed-off-by: Vishal Moola (Oracle) <[email protected]>
---
include/linux/mmzone.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 744bf32e48a8..b58c76e68ac7 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -105,6 +105,9 @@ extern int page_group_by_mobility_disabled;
#define get_pageblock_migratetype(page) \
get_pfnblock_flags_mask(page, page_to_pfn(page), MIGRATETYPE_MASK)

+#define folio_migratetype(folio) \
+ get_pfnblock_flags_mask(&folio->page, folio_pfn(folio), \
+ MIGRATETYPE_MASK)
struct free_area {
struct list_head free_list[MIGRATE_TYPES];
unsigned long nr_free;
--
2.40.1

2023-06-13 21:57:12

by Matthew Wilcox

Subject: Re: [PATCH 2/5] mmzone: Introduce folio_migratetype()

On Tue, Jun 13, 2023 at 01:18:24PM -0700, Vishal Moola (Oracle) wrote:
> Introduce folio_migratetype() as a folio equivalent for
> get_pageblock_migratetype(). This function intends to return the
> migratetype the folio is located in, hence the name choice.
>
> Signed-off-by: Vishal Moola (Oracle) <[email protected]>

Reviewed-by: Matthew Wilcox (Oracle) <[email protected]>