nilfs_cpfile_checkpoints_per_block
int n = nilfs_cpfile_checkpoints_per_block(cpfile);
tcno = div64_ul(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
return do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
return (__u64)nilfs_cpfile_checkpoints_per_block(cpfile) * blkoff
nilfs_cpfile_checkpoints_per_block(cpfile) -