1721 		struct page *page_tail = page + i;  in __split_huge_page_refcount()  local
1724 		BUG_ON(page_mapcount(page_tail) < 0);  in __split_huge_page_refcount()
1725 		tail_count += page_mapcount(page_tail);  in __split_huge_page_refcount()
1728 		BUG_ON(atomic_read(&page_tail->_count) != 0);  in __split_huge_page_refcount()
1742 		atomic_add(page_mapcount(page) + page_mapcount(page_tail) + 1,  in __split_huge_page_refcount()
1743 			   &page_tail->_count);  in __split_huge_page_refcount()
1748 		page_tail->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;  in __split_huge_page_refcount()
1749 		page_tail->flags |= (page->flags &  in __split_huge_page_refcount()
1756 		page_tail->flags |= (1L << PG_dirty);  in __split_huge_page_refcount()
1758 		clear_compound_head(page_tail);  in __split_huge_page_refcount()
1761 			set_page_young(page_tail);  in __split_huge_page_refcount()
1763 			set_page_idle(page_tail);  in __split_huge_page_refcount()
1779 		page_tail->_mapcount = page->_mapcount;  in __split_huge_page_refcount()
1781 		BUG_ON(page_tail->mapping);  in __split_huge_page_refcount()
1782 		page_tail->mapping = page->mapping;  in __split_huge_page_refcount()
1784 		page_tail->index = page->index + i;  in __split_huge_page_refcount()
1785 		page_cpupid_xchg_last(page_tail, page_cpupid_last(page));  in __split_huge_page_refcount()
1787 		BUG_ON(!PageAnon(page_tail));  in __split_huge_page_refcount()
1788 		BUG_ON(!PageUptodate(page_tail));  in __split_huge_page_refcount()
1789 		BUG_ON(!PageDirty(page_tail));  in __split_huge_page_refcount()
1790 		BUG_ON(!PageSwapBacked(page_tail));  in __split_huge_page_refcount()
1792 		lru_add_page_tail(page, page_tail, lruvec, list);  in __split_huge_page_refcount()
1804 		struct page *page_tail = page + i;  in __split_huge_page_refcount()  local
1805 		BUG_ON(page_count(page_tail) <= 0);  in __split_huge_page_refcount()
1813 		put_page(page_tail);  in __split_huge_page_refcount()