Symbol: FILEDESC_LOCK
sys/kern/kern_descrip.c
2668
FILEDESC_LOCK(fdp), PLOCK, "fdlhold", 0);
sys/kern/kern_descrip.c
2677
sx_sleep(fdtol, FILEDESC_LOCK(fdp), PLOCK,
sys/kern/kern_event.c
2503
if (!sx_xlocked(FILEDESC_LOCK(fdp))) {