list_prev_entry
p->evictable = list_prev_entry(p->evictable, tv.head)) {
p->evictable = list_prev_entry(p->evictable, tv.head);
prev_node = list_prev_entry(node, node_list);
hole = list_prev_entry(node, node_list);
prev_node = list_prev_entry(node, node_list);
request = list_prev_entry(request, link);
other = list_prev_entry(node, node_list);
entry = list_prev_entry(entry, head);