COMPACT_CLUSTER_MAX
if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX &&
if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX)
return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1;
stride = cc->mode == MIGRATE_ASYNC ? COMPACT_CLUSTER_MAX : 1;
if (!(block_start_pfn % (COMPACT_CLUSTER_MAX * pageblock_nr_pages)))
stride = min_t(unsigned int, COMPACT_CLUSTER_MAX, stride << 1);
if (!(low_pfn % (COMPACT_CLUSTER_MAX * pageblock_nr_pages)))
if (!(blockpfn % COMPACT_CLUSTER_MAX)
if (!(low_pfn % COMPACT_CLUSTER_MAX)) {