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signals: do_signal_stop: kill the SIGNAL_UNKILLABLE check

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fae5fa44f1 changed do_signal_stop() to check
SIGNAL_UNKILLABLE, this wasn't needed.  If signal_group_exit() == F, the
signal sent to SIGNAL_UNKILLABLE task must be already filtered out by the
caller, get_signal_to_deliver().  And if signal_group_exit() == T we are
not going to stop.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2008-07-25 01:47:31 -07:00 committed by Linus Torvalds
parent 92413d771e
commit 2b201a9edd
1 changed files with 1 additions and 2 deletions
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3
kernel/signal.c
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@ -1649,8 +1649,7 @@ static int do_signal_stop(int signr)
} else {
struct task_struct *t;
if (unlikely((sig->flags & (SIGNAL_STOP_DEQUEUED | SIGNAL_UNKILLABLE))
!= SIGNAL_STOP_DEQUEUED) ||
if (!likely(sig->flags & SIGNAL_STOP_DEQUEUED) ||
unlikely(signal_group_exit(sig)))
return 0;
/*