diff --git a/core/includes/file.inc b/core/includes/file.inc
index 7709250..0cf51de 100644
--- a/core/includes/file.inc
+++ b/core/includes/file.inc
@@ -696,9 +696,6 @@ function file_usage_list(stdClass $file) {
 /**
  * Records that a module is using a file.
  *
- * This usage information will be queried during file_delete() to ensure that
- * a file is not in use before it is physically removed from disk.
- *
  * Examples:
  * - A module that associates files with nodes, so $type would be
  *   'node' and $id would be the node's nid. Files for all revisions are stored
@@ -1425,8 +1422,8 @@ function file_space_used($uid = NULL, $status = FILE_STATUS_PERMANENT) {
  * Saves a file upload to a new location.
  *
  * The file will be added to the {file_managed} table as a temporary file.
- * Temporary files are periodically cleaned. To make the file a permanent file,
- * assign the status and use file_save() to save the changes.
+ * Temporary files are periodically cleaned. Use file_usage_add() to register
+ * the usage of the file which will automatically mark it as permanent.
  *
  * @param $source
  *   A string specifying the filepath or URI of the uploaded file to save.