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[2/5] mmzone: Introduce folio_migratetype()

Message ID 20230613201827.9441-3-vishal.moola@gmail.com (mailing list archive)
State New
Headers show
Series Replace is_longterm_pinnable_page() | expand

Commit Message

Vishal Moola June 13, 2023, 8:18 p.m. UTC 
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) <vishal.moola@gmail.com>
---
 include/linux/mmzone.h | 3 +++
 1 file changed, 3 insertions(+)

Comments

Matthew Wilcox June 13, 2023, 8:53 p.m. UTC | #1 
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) <vishal.moola@gmail.com>

Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
diff mbox series

Patch

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;