[docs] [issue32798] mmap.flush() on Linux does not accept the "offset" and "size" args

[Xiang Zhang]

Xiang Zhang <angwerzx at 126.com> added the comment:

One thing to note is the behaviour seems fit implementation detail. POSIX doesn't requires this for both mmap and msync, it's optional:

The mmap( ) function may fail if:
[EINVAL] The addr argument (if MAP_FIXED was specified) or off is not a multiple of the page size as returned

The msync( ) function may fail if:
[EINVAL] The value of addr is not a multiple of the page size as returned by sysconf( ).

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nosy: +berker.peksag, pablogsal, xiang.zhang

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<https://bugs.python.org/issue32798>
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