-/* We could use hlist_for_each_entry_rcu here but it takes more arguments
- * than the do_each_task_pid/while_each_task_pid. So we roll our own
- * to preserve the existing interface.
- */
-#define do_each_task_pid(who, type, task) \
- if ((task = find_task_by_pid_type(type, who))) { \
- prefetch(pid_next(task, type)); \
- do {
-
-#define while_each_task_pid(who, type, task) \
- } while (pid_next(task, type) && ({ \
- task = pid_next_task(task, type); \
- rcu_dereference(task); \
- prefetch(pid_next(task, type)); \
- 1; }) ); \
- }
+pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns);
+pid_t pid_vnr(struct pid *pid);
+
+#define do_each_pid_task(pid, type, task) \
+ do { \
+ struct hlist_node *pos___; \
+ if (pid != NULL) \
+ hlist_for_each_entry_rcu((task), pos___, \
+ &pid->tasks[type], pids[type].node) {
+
+ /*
+ * Both old and new leaders may be attached to
+ * the same pid in the middle of de_thread().
+ */
+#define while_each_pid_task(pid, type, task) \
+ if (type == PIDTYPE_PID) \
+ break; \
+ } \
+ } while (0)