The patch titled
signals: do_signal_stop: kill the SIGNAL_UNKILLABLE check
has been added to the -mm tree. Its filename is
signals-do_signal_stop-kill-the-signal_unkillable-check.patch
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------------------------------------------------------
Subject: signals: do_signal_stop: kill the SIGNAL_UNKILLABLE check
From: Oleg Nesterov <oleg@xxxxxxxxxx>
fae5fa44f1fd079ffbed8e0add929dd7bbd1347f 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@xxxxxxxxxx>
Cc: Roland McGrath <roland@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/signal.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN kernel/signal.c~signals-do_signal_stop-kill-the-signal_unkillable-check kernel/signal.c
--- a/kernel/signal.c~signals-do_signal_stop-kill-the-signal_unkillable-check
+++ a/kernel/signal.c
@@ -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;
/*
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
vt-fix-vc_resize-locking.patch
uml-activate_mm-remove-the-dead-pf_borrowed_mm-check.patch
posix-timers-timer_delete-remove-the-bogus-it_process-=-null-check.patch
posix-timers-release_posix_timer-kill-the-bogus-put_task_struct-it_process.patch
signals-collect_signal-remove-the-unneeded-sigismember-check.patch
signals-collect_signal-simplify-the-still_pending-logic.patch
signals-change-collect_signal-to-return-void.patch
__exit_signal-dont-take-rcu-lock.patch
signals-dequeue_signal-dont-check-signal_group_exit-when-setting-signal_stop_dequeued.patch
signals-do_signal_stop-kill-the-signal_unkillable-check.patch
coredump-zap_threads-comments-use-while_each_thread.patch
distinct-tgid-tid-i-o-statistics.patch
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