\frametitle {Linked Lists}
  Circular, doubly-linked
  \begin{verbatim}
#include <linux/list.h>
struct my_struct {
  int data;
  struct list_head list;
};
LIST_HEAD(my_list);
  \end{verbatim}
  \begin{verbatim}
void my_function(int n)
{
  struct my_struct foo = {.data = n};
  struct list_head *ptr;
  list_add(&my_struct->foo, &my_list);
  list_for_each(ptr, &my_list)
    printk("%d\n",
      list_entry(ptr, struct my_struct, list)->data);
}
  \end{verbatim}