}
-static struct address_space_operations def_mdt_aops = {
+static const struct address_space_operations def_mdt_aops = {
.writepage = nilfs_mdt_write_page,
.sync_page = block_sync_page,
};
-static struct inode_operations def_mdt_iops;
+static const struct inode_operations def_mdt_iops;
static struct file_operations def_mdt_fops;
/*