8 Feb
2012
8 Feb
'12
3:34 p.m.
On 02/06, Anton Vorontsov wrote:
LMK should not directly check for task->mm. The reason is that the process' threads may exit or detach its mm via use_mm(), but other threads may still have a valid mm. To catch this we use find_lock_task_mm(), which walks up all threads and returns an appropriate task (with lock held).
Reviewed-by: Oleg Nesterov oleg@redhat.com