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Mark Johnston authored
Buckets in an SMR-enabled zone can legitimately be tagged with SMR_SEQ_INVALID. This effectively means that the zone destructor (if any) was invoked on all items in the bucket, and the contained memory is safe to reuse. If the first bucket in the full bucket list was tagged this way, UMA would unnecessarily poll per-CPU state before attempting to fetch a full bucket from the list. MFC after: 2 weeks Sponsored by: The FreeBSD Foundation
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