They're different things.
Regardless of committing to stable storage, write atomicity can be used
for database synchronisation between clients. Of course any sensible
client would synchronise on a single byte... I don't know if any real
applications depend on atomic writes.
> For NFSv3, things are of course different, since there the NFS_COMMIT
> instruction exists in order to trigger the flushing to disk.
And atomicity isn't specified for NFSv3 either.
-- Jamie
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