With the fsync it looks ok for most cases. It depends on the actions of
a rename touching only one disk block - which of course it doesn't do. Even
so with the fsync on a sane fs I cant see that problem occuring
> If you have metadata journalling, all you need for this algorithm to
> work is to have rename() write to the journal before returning. Is
> this true for any of the current journalling file systems on Linux?
Ext3 I believe so, Reiserfs I would assume so but Hans can answer
definitively
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