Questions about Tier evict

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Hi,

      After reading Ceph Tier logical,  I wonder what would happen if
flush_mode = FLUSH_MODE_IDLE, evict_mode = EVICT_MODE_SOME and all the
low-temperature objects are dirty?  Would agent do an infinite evict
cycle without evicting anything?

      If so, could we trigger agent_maybe_flush in agent_maybe_evict?

      Thanks for providing the hints.

Hanjie Zhou
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