Lines Matching refs:low_pfn
824 * @low_pfn: The first PFN to isolate
829 * [low_pfn, end_pfn). The range is expected to be within same pageblock.
838 isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
849 unsigned long start_pfn = low_pfn;
855 cc->migrate_pfn = low_pfn;
881 next_skip_pfn = block_end_pfn(low_pfn, cc->order);
885 for (; low_pfn < end_pfn; low_pfn++) {
887 if (skip_on_failure && low_pfn >= next_skip_pfn) {
901 * next_skip_pfn by 1 << order, as low_pfn might have
906 next_skip_pfn = block_end_pfn(low_pfn, cc->order);
914 if (!(low_pfn % COMPACT_CLUSTER_MAX)) {
932 page = pfn_to_page(low_pfn);
940 if (!valid_page && (pageblock_aligned(low_pfn) ||
941 low_pfn == cc->zone->zone_start_pfn)) {
943 low_pfn = end_pfn;
966 low_pfn += compound_nr(page) - 1;
977 low_pfn += folio_nr_pages(folio) - 1;
1001 * valid order range to prevent low_pfn overflow.
1004 low_pfn += (1UL << freepage_order) - 1;
1022 low_pfn += (1UL << order) - 1;
1144 low_pfn = end_pfn;
1154 low_pfn += folio_nr_pages(folio) - 1;
1163 low_pfn += folio_nr_pages(folio) - 1;
1186 ++low_pfn;
1219 if (low_pfn < next_skip_pfn) {
1220 low_pfn = next_skip_pfn - 1;
1236 if (unlikely(low_pfn > end_pfn))
1237 low_pfn = end_pfn;
1257 if (low_pfn == end_pfn && (!nr_isolated || cc->finish_pageblock)) {
1260 update_cached_migrate(cc, low_pfn);
1263 trace_mm_compaction_isolate_migratepages(start_pfn, low_pfn,
1271 cc->migrate_pfn = low_pfn;
1472 unsigned long low_pfn, min_pfn, highest = 0;
1497 low_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 2));
1500 if (WARN_ON_ONCE(min_pfn > low_pfn))
1501 low_pfn = min_pfn;
1535 if (pfn >= low_pfn) {
1630 low_pfn = page_to_pfn(page);
1631 fast_isolate_around(cc, low_pfn);
1645 unsigned long low_pfn; /* lowest pfn scanner is able to scan */
1669 low_pfn = pageblock_end_pfn(cc->migrate_pfn);
1677 for (; block_start_pfn >= low_pfn;
1697 block_start_pfn = max(next_pfn, low_pfn);
1750 * and the loop terminated due to isolate_start_pfn < low_pfn
1971 unsigned long low_pfn;
1983 low_pfn = fast_find_migrateblock(cc);
1984 block_start_pfn = pageblock_start_pfn(low_pfn);
1993 fast_find_block = low_pfn != cc->migrate_pfn && !cc->fast_search_fail;
1996 block_end_pfn = pageblock_end_pfn(low_pfn);
2004 cc->migrate_pfn = low_pfn = block_end_pfn,
2013 if (!(low_pfn % (COMPACT_CLUSTER_MAX * pageblock_nr_pages)))
2034 if ((pageblock_aligned(low_pfn) ||
2035 low_pfn == cc->zone->zone_start_pfn) &&
2053 if (isolate_migratepages_block(cc, low_pfn, block_end_pfn,