9 calls to file_usage_add()

FileDeleteTest::testInUse in drupal/modules/simpletest/tests/file.test
Tries deleting a file that is in use.
FileUsageTest::testAddUsage in drupal/modules/simpletest/tests/file.test
Tests file_usage_add().
file_field_insert in drupal/modules/file/file.field.inc
Implements hook_field_insert().
file_field_update in drupal/modules/file/file.field.inc
Implements hook_field_update().
image_field_update_field in drupal/modules/image/image.module
Implements hook_field_update_field().
image_field_update_instance in drupal/modules/image/image.module
Implements hook_field_update_instance().
system_update_7061 in drupal/modules/system/system.install
Migrate upload.module data to the newly created file field.
user_save in drupal/modules/user/user.module
Save changes to a user account or add a new user.
user_update_7013 in drupal/modules/user/user.install
Add user module file usage entries.