VFAT_IOCTL_READDIR_SHORT32  901 fs/compat_ioctl.c IGNORE_IOCTL(VFAT_IOCTL_READDIR_SHORT32)
VFAT_IOCTL_READDIR_SHORT32  835 fs/fat/dir.c   	case VFAT_IOCTL_READDIR_SHORT32: