__f_setown
__f_setown(file, task_pid(current), PIDTYPE_TGID, 0);
__f_setown(filp, pid, type, 0);
EXPORT_SYMBOL(__f_setown);
__f_setown(filp, pid, type, force);
__f_setown(filp, NULL, PIDTYPE_TGID, 1);
__f_setown(filp, pid, type, 1);
__f_setown(filp, task_pid(current), PIDTYPE_TGID, 0);
__f_setown(filp, task_pid(current), PIDTYPE_TGID, 0);
extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);