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bq_insert: delay the BUF_UNLOCK if not bd_flush()ing
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Authored by rlibby on Mon, May 11, 7:42 PM.
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Details

Summary

Reduce bufqueue lock contention by delaying the BUF_UNLOCK to after
dropping the bufqueue lock. Still do the early BUF_UNLOCK if we
actually have to bd_flush.

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Repository
rG FreeBSD src repository
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