#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/* used by __split_huge_page_refcount() */
void lru_add_page_tail(struct page *page, struct page *page_tail,
- struct lruvec *lruvec)
+ struct lruvec *lruvec, struct list_head *list)
{
int uninitialized_var(active);
enum lru_list lru;
VM_BUG_ON(NR_CPUS != 1 &&
!spin_is_locked(&lruvec_zone(lruvec)->lru_lock));
- SetPageLRU(page_tail);
+ if (!list)
+ SetPageLRU(page_tail);
if (page_evictable(page_tail)) {
if (PageActive(page)) {
if (likely(PageLRU(page)))
list_add_tail(&page_tail->lru, &page->lru);
- else {
+ else if (list) {
+ /* page reclaim is reclaiming a huge page */
+ get_page(page_tail);
+ list_add_tail(&page_tail->lru, list);
+ } else {
struct list_head *list_head;
/*
* Head page has not yet been counted, as an hpage,