MAX_CSUM_ITEMS
MAX_CSUM_ITEMS(fs_info, csum_size)) {
csum_offset >= MAX_CSUM_ITEMS(fs_info, csum_size)) {
MAX_CSUM_ITEMS(fs_info, csum_size) * csum_size);
tmp = min_t(u64, tmp, MAX_CSUM_ITEMS(fs_info, csum_size));