From 2800d8d19e51414403df8144eaa214bb03400b87 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Wed, 30 Apr 2008 00:53:12 -0700 Subject: [PATCH] document de_thread() with exit_notify() connection Add a couple of small comments, it is not easy to see what this code does. Signed-off-by: Oleg Nesterov Cc: Roland McGrath Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/exec.c | 2 +- kernel/exit.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/exec.c b/fs/exec.c index 8fccc276d40d..9f9f931ef949 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -798,7 +798,7 @@ static int de_thread(struct task_struct *tsk) if (!thread_group_leader(tsk)) { leader = tsk->group_leader; - sig->notify_count = -1; + sig->notify_count = -1; /* for exit_notify() */ for (;;) { write_lock_irq(&tasklist_lock); if (likely(leader->exit_state)) diff --git a/kernel/exit.c b/kernel/exit.c index 413c81ec858e..879ed6e1c883 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -877,6 +877,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead) state = EXIT_DEAD; tsk->exit_state = state; + /* mt-exec, de_thread() is waiting for us */ if (thread_group_leader(tsk) && tsk->signal->notify_count < 0 && tsk->signal->group_exit_task) -- 2.20.1