On Wed 04-03-20 13:13:25, Oleg Nesterov wrote: > On 03/04, Michal Hocko wrote: > > > > So what would be a legit usecase to drop all signals while explicitly > > calling allow_signal? > > Not sure I understand... flush_signals will simply drop all pending signals on the floor so there is no way to handle them, right? I am asking when is still really a desirable thing to do when you allow_signal for the kthread. The only one I can imagine is that the kthread allows a single signal so it is quite clear which signal is flushed. kernel_dequeue_signal on the other hand will give you a signal and so the code can actually handle it in some way. -- Michal Hocko SUSE Labs
