fs_high2lowgid
raw_inode->i_gid_low = cpu_to_le16(fs_high2lowgid(gid));
raw_inode->i_gid_low = cpu_to_le16(fs_high2lowgid(i_gid));
raw_inode->i_gid = fs_high2lowgid(i_gid_read(inode));
raw_inode->i_gid = fs_high2lowgid(i_gid_read(inode));