VFAT_IOCTL_READDIR_SHORT32 2706 fs/compat_ioctl.c #define VFAT_IOCTL_READDIR_SHORT32      _IOR('r', 2, struct compat_dirent[2])
VFAT_IOCTL_READDIR_SHORT32  795 fs/fat/dir.c   #define	VFAT_IOCTL_READDIR_SHORT32	_IOR('r', 2, struct compat_dirent[2])