Initializing structure members

The preferred method of initializing structures is to use the gcc Labeled Elements extension, eg:

static struct block_device_operations opt_fops = {
        open:                   opt_open,
        release:                opt_release,
        ioctl:                  opt_ioctl,
        check_media_change:     opt_media_change,

This makes it easy to grep for, and makes it clear which structure fields are set. You should do this because it looks cool.