Export the alloc_demote_page() function to the head file as a
preparation to support page demotion for DAMON monitor.
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
---
mm/internal.h | 1 +
mm/vmscan.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/internal.h b/mm/internal.h
index deb9bda..99ea5fb 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -181,6 +181,7 @@ static inline void set_page_refcounted(struct page *page)
extern int isolate_lru_page(struct page *page);
extern void putback_lru_page(struct page *page);
extern void reclaim_throttle(pg_data_t *pgdat, enum vmscan_throttle_state reason);
+extern struct page *alloc_demote_page(struct page *page, unsigned long node);
/*
* in mm/rmap.c:
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f3162a5..bf38327 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1458,7 +1458,7 @@ static void page_check_dirty_writeback(struct page *page,
mapping->a_ops->is_dirty_writeback(page, dirty, writeback);
}
-static struct page *alloc_demote_page(struct page *page, unsigned long node)
+struct page *alloc_demote_page(struct page *page, unsigned long node)
{
struct migration_target_control mtc = {
/*
--
1.8.3.1
