1165 		struct page *page_tail = page + i;  in __split_huge_page_refcount()  local
1168 		atomic_sub(atomic_read(&page_tail->_count), &page->_count);  in __split_huge_page_refcount()
1170 		atomic_add(page_mapcount(page) + 1, &page_tail->_count);  in __split_huge_page_refcount()
1171 		BUG_ON(atomic_read(&page_tail->_count) <= 0);  in __split_huge_page_refcount()
1181 		page_tail->flags &= ~PAGE_FLAGS_CHECK_AT_PREP | __PG_HWPOISON;  in __split_huge_page_refcount()
1182 		page_tail->flags |= (page->flags &  in __split_huge_page_refcount()
1187 		page_tail->flags |= (1L << PG_dirty);  in __split_huge_page_refcount()
1209 		BUG_ON(page_mapcount(page_tail));  in __split_huge_page_refcount()
1210 		page_tail->_mapcount = page->_mapcount;  in __split_huge_page_refcount()
1212 		BUG_ON(page_tail->mapping);  in __split_huge_page_refcount()
1213 		page_tail->mapping = page->mapping;  in __split_huge_page_refcount()
1215 		page_tail->index = ++head_index;  in __split_huge_page_refcount()
1217 		BUG_ON(!PageAnon(page_tail));  in __split_huge_page_refcount()
1218 		BUG_ON(!PageUptodate(page_tail));  in __split_huge_page_refcount()
1219 		BUG_ON(!PageDirty(page_tail));  in __split_huge_page_refcount()
1220 		BUG_ON(!PageSwapBacked(page_tail));  in __split_huge_page_refcount()
1222 		mem_cgroup_split_huge_fixup(page, page_tail);  in __split_huge_page_refcount()
1224 		lru_add_page_tail(zone, page, page_tail);  in __split_huge_page_refcount()
1244 		struct page *page_tail = page + i;  in __split_huge_page_refcount()  local
1245 		BUG_ON(page_count(page_tail) <= 0);  in __split_huge_page_refcount()
1253 		put_page(page_tail);  in __split_huge_page_refcount()