signal: Remove has_group_leader_pid

After the introduction of exchange_tids has_group_leader_pid is
equivalent to thread_group_leader.  After the last couple of cleanups
has_group_leader_pid has no more callers.

So remove the now unused and redundant has_group_leader_pid.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 3e5b090c16d4f792b8b77bef3539b3bd2e101d62..0ee5e696c5d8d1bffa611fe28d56d37aac3e3cb7 100644 (file)
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -654,17 +654,6 @@ static inline bool thread_group_leader(struct task_struct *p)
        return p->exit_signal >= 0;
 }
 
-/* Do to the insanities of de_thread it is possible for a process
- * to have the pid of the thread group leader without actually being
- * the thread group leader.  For iteration through the pids in proc
- * all we care about is that we have a task with the appropriate
- * pid, we don't actually care if we have the right task.
- */
-static inline bool has_group_leader_pid(struct task_struct *p)
-{
-       return task_pid(p) == task_tgid(p);
-}
-
 static inline
 bool same_thread_group(struct task_struct *p1, struct task_struct *p2)
 {