nilfs_chunk_size
unsigned int chunk_size = nilfs_chunk_size(dir);
if (unlikely((char *)next_de == (char *)de + nilfs_chunk_size(dir) ||
unsigned int chunk_size = nilfs_chunk_size(dir);
from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1);
unsigned int chunk_size = nilfs_chunk_size(inode);