xfs_symlink_hdr_set
buf += xfs_symlink_hdr_set(mp, ip->i_ino, 0, ifp->if_bytes, bp);
buf += xfs_symlink_hdr_set(mp, owner, offset, byte_cnt, bp);
int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,