fmh_reserved      649 fs/ext4/ioctl.c 	if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
fmh_reserved     1871 fs/xfs/xfs_ioctl.c 	if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
fmh_reserved       65 include/uapi/linux/fsmap.h 	__u64		fmh_reserved[6];	/* must be zero */