On 3/1/19 1:16 PM, Andrey Ryabinin wrote:
> A slightly better version of __split_huge_page();
>
> Signed-off-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Ack.
> Cc: Vlastimil Babka <vbabka@xxxxxxx>
> Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxxxx>
> Cc: Rik van Riel <riel@xxxxxxxxxxx>
> Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
> Cc: John Hubbard <jhubbard@xxxxxxxxxx>
> ---
> mm/huge_memory.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 4ccac6b32d49..fcf657886b4b 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -2440,11 +2440,11 @@ static void __split_huge_page(struct page *page, struct list_head *list,
> pgoff_t end, unsigned long flags)
> {
> struct page *head = compound_head(page);
> - struct zone *zone = page_zone(head);
> + pg_data_t *pgdat = page_pgdat(head);
> struct lruvec *lruvec;
> int i;
>
> - lruvec = mem_cgroup_page_lruvec(head, zone->zone_pgdat);
> + lruvec = mem_cgroup_page_lruvec(head, pgdat);
>
> /* complete memcg works before add pages to LRU */
> mem_cgroup_split_huge_fixup(head);
> @@ -2475,7 +2475,7 @@ static void __split_huge_page(struct page *page, struct list_head *list,
> xa_unlock(&head->mapping->i_pages);
> }
>
> - spin_unlock_irqrestore(&page_pgdat(head)->lru_lock, flags);
> + spin_unlock_irqrestore(&pgdat->lru_lock, flags);
>
> remap_page(head);
>
>
