fat_chain_add    1327 fs/fat/dir.c   		err = fat_chain_add(dir, cluster, nr_cluster);
fat_chain_add      50 fs/fat/inode.c 	err = fat_chain_add(inode, cluster, 1);
fat_chain_add     437 include/linux/msdos_fs.h extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);