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__group_complete_signal: eliminate unneeded wakeup of ->group_exit_task
Cleanup. __group_complete_signal() wakes up ->group_exit_task twice. The
second wakeup's state includes TASK_UNINTERRUPTIBLE, which is not very
appropriate.
Change the code to pass the "correct" argument to signal_wake_up() and kill
now unneeded wake_up_process().
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>