	private function _allrevisionsbefore( $option ) {
		$this->addTable( 'revision_actor_temp', 'rev' );
		$this->addSelect(
			[
				'rev.revactor_rev',
				'rev.revactor_timestamp'
			]
		);
		$this->addOrderBy( 'rev.revactor_rev' );
		$this->setOrderDir( 'DESC' );
		$this->addWhere(
			[
				$this->tableNames['page'] . '.page_id = rev.revactor_page',
				'rev.revactor_timestamp < ' . $this->convertTimestamp( $option )
			]
		);
	}
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.