Ticket #18413: 18413.diff

docs/ref/models/fields.txt

@@ -668 +668 @@
 The optional ``save`` argument controls whether or not the instance is saved
 after the file has been deleted. Defaults to ``True``.
 
+Note that when a model is deleted, the :class:`~django.db.models.FileField`'s
+:func:`~django.db.models.FileField.delete` method won't be called.  If you need
+to cleanup orphaned files, you'll need to handle it yourself (for instance,
+with a custom management command that can be run manually or scheduled to run
+periodically via e.g. cron).
+
 ``FilePathField``
 -----------------