On 1/17/18 5:34 AM, Ming Lei wrote: > We know this WARN_ON is harmless and the stack trace isn't useful too, > so convert it to printk(), and avoid to confuse people. I disagree, it is useful to know the exact path it happened from, in case it's a valid warning. It could be an inline run and we screwed up the logic, or it could be from a workqueue and the reason would be entirely different. -- Jens Axboe