Charles-François Natali <neolo...@free.fr> added the comment:

Steffen, you changed the default to doing a "full sync" in your last patch: 
while I was favoring that initially, I now agree with Ronald and Antoine, and 
think that we shouldn't change the default behaviour. The reason being that 
Apple and NetBSD folks should know what they're doing, and that there might be 
some subtle side effects (see for example my comment on sync_file_range on 
Linux). Also, given how many bugs you seem to encouter on OS-X, it's probably 
better to stick to a syscall known to be safe instead of silently replacing it 
by a maybe-not-so-tested syscall. Finally, depending on the workload, it could 
have a significant performance impact. People requiring write durability will 
probably manage to find this full_sync parameter.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue11877>
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