zap_other_threads: remove unneeded ->exit_signal change

We already depend on fact that all sub-threads have ->exit_signal == -1, no
need to set it in zap_other_threads().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 11 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index 4c8f49eadf7d..23ae6d62fc41 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -913,17 +913,6 @@ void zap_other_threads(struct task_struct *p)
                 if (t->exit_state)
                         continue;
 
-                /*
-                 * We don't want to notify the parent, since we are
-                 * killed as part of a thread group due to another
-                 * thread doing an execve() or similar. So set the
-                 * exit signal to -1 to allow immediate reaping of
-                 * the process.  But don't detach the thread group
-                 * leader.
-                 */
-                if (t != p->group_leader)
-                        t->exit_signal = -1;
-
                 /* SIGKILL will be handled before any pending SIGSTOP */
                 sigaddset(&t->pending.signal, SIGKILL);
                 signal_wake_up(t, 1);