```cpp
// Option 1: Handle file size directly
	if (dentry->d_inode) {
		size = i_size_read(dentry->d_inode);
		file_modified = !!(dentry->d_inode->i_flags & S_IFREG) &&
			(dentry->d_inode->i_mtime.tv_sec !=
			 dentry->d_inode->i_ctime.tv_sec);
	}
	if (bmval)
		memcpy(attrmask, bmval, sizeof(attrmask));
	else
		nfsd4_attrmask_init(attrmask, minorversion);
	args.fattr.attr_valid = 0;
	args.fattr.attr_valid |= nfsd4_fattr_set_type(dentry, &args.fattr,
						     attrmask);
	if (dentry->d_inode) {
		args.fattr.attr_valid |= nfsd4_fattr_set_mode(dentry,
							     &args.fattr,
							     attrmask);
		if (attrmask[0] & FATTR4_SIZE) {
			args.fattr.attr_valid |= FATTR4_SIZE;
			args.fattr.size = size;
		}
		args.fattr.attr_valid |= nfsd4_fattr_set_atime(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_mtime(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_ctime(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_nlink(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_uid(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_gid(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_rdev(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_blksize(dentry,
							      &args.fattr,
							      attrmask);
		if (attrmask[1] & FATTR4_FILEHANDLE) {
			args.fattr.attr_valid |= FATTR4_FILEHANDLE;
			if (ignore_crossmnt)
				tempfh = nfsd4_copy_fh(fhp);
			else
				tempfh = nfsd4_get_fh(dentry, exp, false);
			if (IS_ERR(tempfh)) {
				status = PTR_ERR(tempfh);
				goto out;
			}
		}
		if (attrmask[1] & FATTR4_FILEID) {
			args.fattr.attr_valid |= FATTR4_FILEID;
			args.fattr.fileid = dentry->d_inode->i_ino;
		}
		args.fattr.attr_valid |= nfsd4_fattr_set_change(dentry,
							     &args.fattr,
							     attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_space_used(dentry,
								&args.fattr,
								attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_space_total(dentry,
								&args.fattr,
								attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_space_avail(dentry,
								&args.fattr,
								attrmask);
		args.fattr.attr_valid |= nfsd4_fattr_set_fsid(dentry,
							     &args.fattr,
							     attrmask);
	}
	if (attrmask[2] & FATTR4_ACL) {
		err = nfsd4_fattr_set_acl(dentry, &args.fattr, attrmask,
					  &path);
		if (err) {
			status = nfsd4_encode_op_error(rqstp, xdr, err);
			goto out;
		}
	}
	if (attrmask[2] & FATTR4_QUOTA) {
		err = nfsd4_fattr_set_quota(dentry, &args.fattr, attrmask,
					   &path);
		if (err) {
			status = nfsd4_encode_op_error(rqstp, xdr, err);
			goto out;
		}
	}
	if (file_modified)
		args.fattr.attr_valid |= FATTR4_FILEHANDLE;
	attrlen_offset = xdr->buf->len;
	attrlen_p = xdr_reserve_space(xdr, sizeof(__be32));

	for_each_set_bit(bit, attr_bitmap, ARRAY_SIZE(attr_bitmap)) {
		err = nfsd4_enc_fattr4_encode_ops[bit](xdr, &args.fattr,
						      attrmask, &path);
		if (err) {
			status = nfsd4_encode_op_error(rqstp, xdr, err);
			goto out;
		}
	}

	*attrlen_p = xdr_be32_encode(xdr, xdr->buf->len - attrlen_offset);
	status = nfsd4_encode_fattr4(xdr, &args.fattr, bmval,
				   starting_len - attrlen_offset);
out:
	if (tempfh)
		nfsd4_free_fh(tempfh);
	return status;
}
```

**Explanation:**

1. **Handle file size directly:**
   -  We obtain the file size using `i_size_read(dentry->d_inode)`.
   -  We set the `FATTR4_SIZE` bit in the `args.fattr.attr_valid` if `FATTR4_SIZE` is requested in `attrmask`.

2. **Setting other attributes:**
   - We use helper functions from `nfsd4_fattr_set_*` to set the remaining attributes like `mode`, `atime`, `mtime`, `ctime`, `nlink`, `uid`, `gid`, `rdev`, `blksize`, `change`, `space_used`, `space_total`, `space_avail`, and `fsid`.
   -  These functions ensure that the attribute is set only if requested in `attrmask`.

3. **Setting `FATTR4_FILEHANDLE`:**
   - If `FATTR4_FILEHANDLE` is requested in `attrmask`:
     - We obtain the file handle using `nfsd4_get_fh(dentry, exp, false)`, which gets the handle for the provided dentry. 
     - We handle potential errors by checking if `IS_ERR(tempfh)` and setting `status` to `PTR_ERR(tempfh)` if an error occurred.

4. **Setting `FATTR4_FILEID`:**
   - If `FATTR4_FILEID` is requested in `attrmask`:
     - We set `args.fattr.fileid` to the `inode` number of the dentry's inode.

5. **Setting ACL and Quota:**
   - If `FATTR4_ACL` is requested in `attrmask`:
     - We call `nfsd4_fattr_set_acl` to set the ACL for the dentry. 
     - We handle potential errors by checking for a non-zero return value from `nfsd4_fattr_set_acl` and setting `status` to the encoded error value.
   - If `FATTR4_QUOTA` is requested in `attrmask`:
     - We call `nfsd4_fattr_set_quota` to set the quota for the dentry.
     - We handle potential errors by checking for a non-zero return value from `nfsd4_fattr_set_quota` and setting `status` to the encoded error value.

6. **Encoding the attributes:**
   - We loop through the `attr_bitmap` and call the corresponding encoding function from `nfsd4_enc_fattr4_encode_ops`.
   - We handle potential errors by checking for a non-zero return value from the encoding function and setting `status` to the encoded error value.

7. **Clean up:**
   - We free the temporary file handle `tempfh` if it was allocated.

8. **Return status:**
   - We return the `status` value, which indicates success or failure.
