trying to pass max_source_length attr to dataset loader

fs.py

@@ -136,6 +136,7 @@ class Fs(datasets.GeneratorBasedBuilder):
                 gen_kwargs={
                     "data_file": os.path.join(dl_dir, "train.jsonl"),
                     "split": datasets.Split.TRAIN,
+                    "max_source_length": self.config.max_source_length,
                 },
             ),
             datasets.SplitGenerator(
@@ -143,6 +144,7 @@ class Fs(datasets.GeneratorBasedBuilder):
                 gen_kwargs={
                     "data_file": os.path.join(dl_dir, "validation.jsonl"),
                     "split": datasets.Split.VALIDATION,
+                    "max_source_length": self.config.max_source_length,
                 },
             ),
             datasets.SplitGenerator(
@@ -150,11 +152,12 @@ class Fs(datasets.GeneratorBasedBuilder):
                 gen_kwargs={
                     "data_file": os.path.join(dl_dir, "test.jsonl") if data_files is None else data_files["test"],
                     "split": datasets.Split.TEST,
+                    "max_source_length": self.config.max_source_length,
                 },
             ),
         ]
 
-    def _generate_examples(self, data_file, split):
+    def _generate_examples(self, data_file, split, max_source_length):
         with open(data_file, encoding="utf-8") as f:
             for line in f:
                 row = json.loads(line)