On Tue, 21 Dec 2021 17:18:03 +0800 Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> wrote:
> 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>
Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
Thanks,
SJ
> ---
> 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
