[New-bugs-announce] [issue39640] fall back os.fdatasync() to fsync() on POSIX systems without fdatasync() support

[George Melikov]

New submission from George Melikov <mail at gmelikov.ru>:

POSIX fdatasync() is similar to fsync() but it tries not to sync non-needed metadata. If POSIX OS doesn't have it - it's safe to use fsync() (If we need to sync data to disk - we have to use one of these functions).

This change will help to run code with fdatasync() on MacOS without fallbacks in Python code.

I'll propose a PR soon.

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components: IO
messages: 362025
nosy: gmelikov
priority: normal
severity: normal
status: open
title: fall back os.fdatasync() to fsync() on POSIX systems without fdatasync() support

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39640>
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