reiserfs: delete comments referring to the BKL

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 5e0d1f4..d9eab2e 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -679,8 +679,6 @@ static void exit_mm(struct task_struct * tsk)
        tsk->mm = NULL;
        up_read(&mm->mmap_sem);
        enter_lazy_tlb(mm, current);
-       /* We don't want this task to be frozen prematurely */
-       clear_freeze_flag(tsk);
        task_unlock(tsk);
        mm_update_next_owner(mm);
        mmput(mm);
@@ -1040,6 +1038,7 @@ NORET_TYPE void do_exit(long code)
        exit_rcu();
        /* causes final put_task_struct in finish_task_switch(). */
        tsk->state = TASK_DEAD;
+       tsk->flags |= PF_NOFREEZE;      /* tell freezer to ignore us */
        schedule();
        BUG();
        /* Avoid "noreturn function does return".  */
@@ -1530,8 +1529,15 @@ static int wait_consider_task(struct wait_opts *wo, int ptrace,
        }
 
        /* dead body doesn't have much to contribute */
-       if (p->exit_state == EXIT_DEAD)
+       if (unlikely(p->exit_state == EXIT_DEAD)) {
+               /*
+                * But do not ignore this task until the tracer does
+                * wait_task_zombie()->do_notify_parent().
+                */
+               if (likely(!ptrace) && unlikely(ptrace_reparented(p)))
+                       wo->notask_error = 0;
                return 0;
+       }
 
        /* slay zombie? */
        if (p->exit_state == EXIT_ZOMBIE) {