ext4_compat_ioctl  666 fs/ext4/dir.c  	.compat_ioctl	= ext4_compat_ioctl,
ext4_compat_ioctl 2659 fs/ext4/ext4.h extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
ext4_compat_ioctl  520 fs/ext4/file.c 	.compat_ioctl	= ext4_compat_ioctl,