On 02/24/2012 09:08 AM, Christoph Lameter wrote: > cpuset_mems_allowed takes a mutex. Hmmm... Under rcu? > > security_task_movememory does some kind of security hook. > > Is that all safe? If not then we need to take a refcount on the task > struct after all. Urg, no we can't sleep under an rcu_read_lock(). -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>