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4c8d0471fa
Having high-refcount dedup entries for zero blocks is inefficient when they could be recorded as a holes instead. Normally, zero compression is not done if compression is disabled to not confuse naive benchmarks. But with dedup enabled, it is expected that the write will be skipped anyway, so we are just optimizing the way it is skipped. Reviewed-by: Rob Norris <robn@despairlabs.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17435 |
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