lock = lookupHashTable(fd_hash, fd);
if (lock == NULL) {
// errorBelch("unlockFile: fd %d not found", fd);
// This is normal: we didn't know when calling unlockFile
// whether this FD referred to a locked file or not.
lock = lookupHashTable(fd_hash, fd);
if (lock == NULL) {
// errorBelch("unlockFile: fd %d not found", fd);
// This is normal: we didn't know when calling unlockFile
// whether this FD referred to a locked file or not.