NILFS_ERROR_FS
if (nilfs->ns_mount_state & NILFS_ERROR_FS) {
if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
nilfs->ns_mount_state |= NILFS_ERROR_FS;
sbp[0]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
sbp[1]->s_state |= cpu_to_le16(NILFS_ERROR_FS);