There are legitimate applications where the value of data is low enough and the load is high enough, that losing the database upon crash is ok.
I have mixed feelings about making it a mount option for reiser4 because many users will not know what they do. In the end though, I should just sell the rope and advise but not control what people do with it. If someone writes it I will take a mount option patch to disable fsync iff it comes with documentation that has a lot of warnings.
