taglinefilesource code
readdir29fs/read_write.cif (file->f_op && file->f_op->readdir) {
readdir32fs/read_write.cerror = file->f_op->readdir(inode,file,dirent,count);
readdir269include/linux/fs.hint (*readdir) (struct inode *, struct file *, struct dirent *, int);