cc_lock_upgrade
in_lock->type == cc_lock_upgrade);
in_type != cc_lock_upgrade &&
if (!err && (type == cc_lock_upgrade || type == cc_lock_downgrade)) {
if (lock_type == cc_lock_write || lock_type == cc_lock_upgrade) {
} else if (in_pending_lock_type == cc_lock_upgrade) {
client_lock_type != cc_lock_upgrade)) {
check_int(cc_lock_upgrade, 2);