[issue678250] test_mmap failling on AIX

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Interestingly, the matter was discussed on another issue, #2643. I also agree that ideally flush() should become a no-op (only in 3.2, since it would break compatibility). But then we should also expose a separate sync() method with the current behaviour.

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nosy: +pitrou

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