RFR: 8324834: Use _LARGE_FILES on AIX

[Christoph Langer]

On Mon, 29 Jan 2024 12:41:29 GMT, Julian Waters <jwaters at openjdk.org> wrote:

>> In the same spirit as [JDK-8318696](https://bugs.openjdk.org/browse/JDK-8318696), we should adapt the AIX-specific code in hotspot so it uses the well-defined posix `<foo>` functions, instead of `<foo>64`. By setting the define _LARGE_FILES, this will make `<foo>` behave as `<foo>64`, just as _FILE_OFFSET_BITS=64 does on gcc. (Reference: https://www.ibm.com/docs/en/aix/7.1?topic=volumes-writing-programs-that-access-large-files)
>> 
>> In theory, it should not even be necessary to set this, since we only compile for 64-bit AIX platforms, and this is only relevant on 32-bit platforms. But let's add the define anyway, for good measure. It shows at least that we have thought about the matter. :-)
>> 
>> I have not been able to test this on AIX. I hope someone with AIX access can take this for a spin.
>> 
>> The reason I'm doing this is for [JDK-8324539](https://bugs.openjdk.org/browse/JDK-8324539). After both these bugs are fixed, there will be no more `<foo>64` function calls in the code base.
>
> I believe this has missed 2 callsites in os_posix.cpp, which recently swapped to the 64 suffixed variant that is controlled the AIX_ONLY macro
> https://github.com/openjdk/jdk/pull/17587

As @TheShermanTanker mentioned, 8950d68ddb36d35831fbb4b98969cd0537527070 should be reverted as part of this change.

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PR Comment: https://git.openjdk.org/jdk/pull/17611#issuecomment-1915006749