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Eric W. Biederman authored
With the introduction of exchange_tids thread_group_leader and has_group_leader_pid have become equivalent. Further at this point in the code a thread group has exactly two threads, the previous thread_group_leader that is waiting to be reaped and tsk. So we know it is impossible for tsk to be the thread_group_leader. This is also the last user of has_group_leader_pid so removing this check will allow has_group_leader_pid to be removed. So remove the "BUG_ON(has_group_leader_pid)" that will never fire. Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com>
610b8188