wait_task_stopped(): remove unneeded delay_group_leader check
wait_task_stopped() doesn't need the "delay_group_leader" parameter. If
the child is not traced it must be a group leader. With or without
subthreads ->group_stop_count == 0 when the whole task is stopped.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Mika Penttila <mika.penttila@kolumbus.fi>
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>
diff --git a/kernel/exit.c b/kernel/exit.c
index 723a69b..190a4cd 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1351,7 +1351,7 @@
* the lock and this task is uninteresting. If we return nonzero, we have
* released the lock and the system call should return.
*/
-static int wait_task_stopped(struct task_struct *p, int delayed_group_leader,
+static int wait_task_stopped(struct task_struct *p,
int noreap, struct siginfo __user *infop,
int __user *stat_addr, struct rusage __user *ru)
{
@@ -1365,8 +1365,7 @@
if (unlikely(!task_is_stopped_or_traced(p)))
goto unlock_sig;
- if (delayed_group_leader && !(p->ptrace & PT_PTRACED) &&
- p->signal->group_stop_count > 0)
+ if (!(p->ptrace & PT_PTRACED) && p->signal->group_stop_count > 0)
/*
* A group stop is in progress and this is the group leader.
* We won't report until all threads have stopped.
@@ -1522,7 +1521,7 @@
!(options & WUNTRACED))
continue;
- retval = wait_task_stopped(p, ret == 2,
+ retval = wait_task_stopped(p,
(options & WNOWAIT), infop,
stat_addr, ru);
} else if (p->exit_state == EXIT_ZOMBIE) {