diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 85c098a..8635be5 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -573,9 +573,10 @@
 	return err;
 }
 
-static int hppfs_fsync(struct file *file, int datasync)
+static int hppfs_fsync(struct file *file, loff_t start, loff_t end,
+		       int datasync)
 {
-	return 0;
+	return filemap_write_and_wait_range(file->f_mapping, start, end);
 }
 
 static const struct file_operations hppfs_dir_fops = {