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    Subject[PATCH 1/2] mm: Export the alloc_demote_page() function
    Date
    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@linux.alibaba.com>
    ---
    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
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