dm cache: simplify the IDLE vs BUSY state calculation
Drop the MODERATE state since it wasn't buying us much. Also, in check_migrations(), prepare for the next commit ("dm cache policy smq: don't do any writebacks unless IDLE") by deferring to the policy to make the final decision on whether writebacks can be serviced. Signed-off-by:Joe Thornber <ejt@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
parent
701e03e4
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