xfs_fsid_t
xfs_fsid_t _ha_fsid; /* unique file system identifier */
xfs_fsid_t fsid; /* m_fixedfsid */
memcpy(&kern_f->fsid, ip2->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
if (memcmp(&kern_f->fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)))
memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));