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This reverts commit 6a7c0ccca44ad02c476a111d8f7911fc8b12fff7. A proper fix for Issue #1648 was landed under Issue #1890, so this is no longer needed. Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1648