kill task_detached()

Upadate the last user of task_detached(), wait_task_zombie(), to
use thread_group_leader() and kill task_detached().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 5 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0cb4f097f76c..39acee2c8929 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2318,11 +2318,6 @@ static inline int thread_group_empty(struct task_struct *p)
 #define delay_group_leader(p) \
                 (thread_group_leader(p) && !thread_group_empty(p))
 
-static inline int task_detached(struct task_struct *p)
-{
-        return p->exit_signal == -1;
-}
-
 /*
  * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
  * subscriptions and synchronises with wait4().  Also used in procfs.  Also