RFR: 8272047: java/nio/channels/FileChannel/Transfer2GPlus.java failed with Unexpected transfer size: 2147418112 [v3]

[Alan Bateman]

On Fri, 6 Aug 2021 00:00:51 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Please consider this fix which resolves a test consistently failing on aarch64 in the CI pipeline.
>
> Brian Burkhalter has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.

As you note, the sendfile(2) page says it is limited 0x7ffff000 but the linux-aarch64 systems where the test is failing is limited to 0x7fff0000. It might better to put this test on the exclude list/ProblemList.txt to allow for more investigation. It might be that the limit returned by FCI.maxDirectTransferSize0 needs to take account of kernel or architecture differences.

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PR: https://git.openjdk.java.net/jdk/pull/5025