Sorry for delay, On 06/29, David Rientjes wrote: > > On Thu, 28 Jun 2012, Kamezawa Hiroyuki wrote: > > > > It turns out that task->children is not an rcu-protected list so this > > > doesn't work. > > > > Can't we use sighand->lock to iterate children ? > > > > I don't think so, this list is protected by tasklist_lock. Oleg? Yes, you are right, ->siglock can't help. Oleg. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>