There's no guarantee of that. A filesystem could simple erase itself upon unexpected
poweroff/crash. *Anything* better than that is an implementation detail.
Posted Mar 15, 2009 1:58 UTC (Sun) by bojan (subscriber, #14302)
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I knew someone's going have a silly comment here. I was expecting, however, that it's going to be more technical, along the lines "see, you cannot rely on it after all". Just for the record, the first rename emacs does is optional (in order to get the backup file) and would not be done for configuration files, hence full atomicity and durability.