diff options
Diffstat (limited to 'kernel/freezer.c')
| -rw-r--r-- | kernel/freezer.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/kernel/freezer.c b/kernel/freezer.c index c38893b0efba..595afabcb9a9 100644 --- a/kernel/freezer.c +++ b/kernel/freezer.c @@ -85,14 +85,21 @@ bool __refrigerator(bool check_kthr_stop) } EXPORT_SYMBOL(__refrigerator); -static void fake_signal_wake_up(struct task_struct *p) +static bool fake_signal_wake_up(struct task_struct *p) { unsigned long flags; + bool ret = false; + + if (p->flags & (PF_KTHREAD | PF_DUMPCORE)) + return ret; if (lock_task_sighand(p, &flags)) { - signal_wake_up(p, 0); + ret = !(p->flags & PF_DUMPCORE); + if (ret) + signal_wake_up(p, 0); unlock_task_sighand(p, &flags); } + return ret; } /** @@ -100,8 +107,8 @@ static void fake_signal_wake_up(struct task_struct *p) * @p: task to send the request to * * If @p is freezing, the freeze request is sent either by sending a fake - * signal (if it's not a kernel thread) or waking it up (if it's a kernel - * thread). + * signal (if it's not a kernel thread or a coredumping thread) or waking + * it up otherwise. * * RETURNS: * %false, if @p is not freezing or already frozen; %true, otherwise @@ -116,9 +123,7 @@ bool freeze_task(struct task_struct *p) return false; } - if (!(p->flags & PF_KTHREAD)) - fake_signal_wake_up(p); - else + if (!fake_signal_wake_up(p)) wake_up_state(p, TASK_INTERRUPTIBLE); spin_unlock_irqrestore(&freezer_lock, flags); |