K 10 svn:author V 5 markj K 8 svn:date V 27 2018-02-24T20:47:22.014012Z K 7 svn:log V 531 Restore the pre-r329882 inactive page shortage computation. With r329882, in the absence of a free page shortage we would only take len(PQ_INACTIVE)+len(PQ_LAUNDRY) into account when deciding whether to aggressively scan PQ_ACTIVE. Previously we would also include the number of free pages in this computation, ensuring that we wouldn't scan PQ_ACTIVE with plenty of free memory available. The change in behaviour was most noticeable immediately after booting, when PQ_INACTIVE and PQ_LAUNDRY are nearly empty. Reviewed by: jeff END