On Tue, Mar 19, 2013 at 06:26:43PM +0800, Simon Jeons wrote: > >>>- if (sc.nr_reclaimed >= SWAP_CLUSTER_MAX) > >>>- break; > >>>- } while (--sc.priority >= 0); > >>>+ if (order && sc.nr_reclaimed >= 2UL << order) > >>>+ order = sc.order = 0; > >>If order == 0 is meet, should we do defrag for it? > >> > >Compaction is unnecessary for order-0. > > > > I mean since order && sc.reclaimed >= 2UL << order, it is reclaimed > for high order allocation, if order == 0 is meet, should we do > defrag for it? >
I don't get this question at all. We do not defrag via compaction for order-0 allocation requests because it makes no sense. -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
