1065 	pid_t pid = uval & FUTEX_TID_MASK;  in attach_to_pi_state()  local
1121 			if (pid)  in attach_to_pi_state()
1137 		if (!pid)  in attach_to_pi_state()
1153 	if (pid != task_pid_vnr(pi_state->owner))  in attach_to_pi_state()
1273 	pid_t pid = uval & FUTEX_TID_MASK;  in attach_to_pi_owner()  local
1284 	if (!pid)  in attach_to_pi_owner()
1286 	p = find_get_task_by_vpid(pid);  in attach_to_pi_owner()
3502 SYSCALL_DEFINE3(get_robust_list, int, pid,  in SYSCALL_DEFINE3()  argument
3516 	if (!pid)  in SYSCALL_DEFINE3()
3519 		p = find_task_by_vpid(pid);  in SYSCALL_DEFINE3()
4063 COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid,  in COMPAT_SYSCALL_DEFINE3()  argument
4077 	if (!pid)  in COMPAT_SYSCALL_DEFINE3()
4080 		p = find_task_by_vpid(pid);  in COMPAT_SYSCALL_DEFINE3()