find_lock_task_mm
t = find_lock_task_mm(p);
struct task_struct *p = find_lock_task_mm(task);
extern struct task_struct *find_lock_task_mm(struct task_struct *p);
t = find_lock_task_mm(p);
p = find_lock_task_mm(task);
p = find_lock_task_mm(p);
task = find_lock_task_mm(p);
p = find_lock_task_mm(victim);