On 03/05, Mandeep Singh Baines wrote: > > On Tue, Mar 5, 2013 at 9:48 AM, Oleg Nesterov <o...@redhat.com> wrote: > > On 03/05, Mandeep Singh Baines wrote: > >> > >> @@ -2462,13 +2462,13 @@ static int hotkey_kthread(void *data) > >> unsigned int poll_freq; > >> bool was_frozen; > >> > >> + set_freezable(); > >> + > >> mutex_lock(&hotkey_thread_mutex); > >> > >> if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) > >> goto exit; > >> > >> - set_freezable(); > >> - > > > > I don't understand this code... but don't we have the same problem > > with kthread_freezable_should_stop() below? It can call __refrigerator() > > too under the same lock. > > > > I don't think the lock is held at that point. There is an unlock right > before entering the while loop and at the bottom of the loop.
Hmm... Afaics this is another lock, hotkey_thread_data_mutex. But hotkey_thread_mutex is still held. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
