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OpenZFS 9434 - Speculative prefetch is blocked by device removal code
Device removal code does not set spa_indirect_vdevs_loaded for pools that never experienced device removal. At least one visual consequence of it is completely blocked speculative prefetcher. This patch sets the variable in such situations. Authored by: Alexander Motin <mav@FreeBSD.org> Reviewed by: Matthew Ahrens <email@example.com> Reviewed by: Prashanth Sreenivasa <firstname.lastname@example.org> Reviewed-by: George Melikov <email@example.com> Reviewed-by: Brian Behlendorf <firstname.lastname@example.org> Reviewed-by: Tim Chase <email@example.com> Approved by: Matt Ahrens <firstname.lastname@example.org> Ported-by: Giuseppe Di Natale <email@example.com> OpenZFS-issue: https://www.illumos.org/issues/9434 OpenZFS-commit: openzfs/openzfs@16127b6 Closes #7480
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