wait_task_stopped/continued: remove unneeded p->signal != NULL check
The child was found on ->children list under tasklist_lock, it must have a
valid ->signal. __exit_signal() both removes the task from parent->children
and clears ->signal "atomically" under write_lock(tasklist).
Remove unneeded checks.
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>
diff --git a/kernel/exit.c b/kernel/exit.c
index b27a3dcd..25f6805 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1322,7 +1322,7 @@
if (!p->exit_code)
return 0;
if (delayed_group_leader && !(p->ptrace & PT_PTRACED) &&
- p->signal && p->signal->group_stop_count > 0)
+ 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.
@@ -1436,9 +1436,6 @@
pid_t pid;
uid_t uid;
- if (unlikely(!p->signal))
- return 0;
-
if (!(p->signal->flags & SIGNAL_STOP_CONTINUED))
return 0;