F_UNUSED
if (f->f_type == F_UNUSED) {
if (f->f_type == F_UNUSED ||
while (f->f_type != F_UNUSED) {
f->f_type = F_UNUSED;
f->f_type != F_UNUSED) {
f->f_type = F_UNUSED;
case F_UNUSED:
f->f_type == F_UNUSED) {
f->f_type = F_UNUSED;
f->f_type == F_UNUSED) {
f->f_type = F_UNUSED;
f->f_type = F_UNUSED;
if (f->f_type == F_UNUSED)
if (f->f_type != F_UNUSED &&
f->f_prev_queue_count = (f->f_type == F_UNUSED) ?
if (f->f_type == F_UNUSED) {
f->f_type == F_UNUSED)
f->f_type = F_UNUSED;