summaryrefslogtreecommitdiffstats
path: root/mm/compaction.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/compaction.c')
-rw-r--r--mm/compaction.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 0eb9f99196c..6878c005bc8 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -526,8 +526,25 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
/* If isolation recently failed, do not retry */
pageblock_nr = low_pfn >> pageblock_order;
- if (!isolation_suitable(cc, page))
- goto next_pageblock;
+ if (last_pageblock_nr != pageblock_nr) {
+ int mt;
+
+ last_pageblock_nr = pageblock_nr;
+ if (!isolation_suitable(cc, page))
+ goto next_pageblock;
+
+ /*
+ * For async migration, also only scan in MOVABLE
+ * blocks. Async migration is optimistic to see if
+ * the minimum amount of work satisfies the allocation
+ */
+ mt = get_pageblock_migratetype(page);
+ if (!cc->sync && !migrate_async_suitable(mt)) {
+ cc->finished_update_migrate = true;
+ skipped_async_unsuitable = true;
+ goto next_pageblock;
+ }
+ }
/*
* Skip if free. page_order cannot be used without zone->lock
@@ -537,18 +554,6 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
continue;
/*
- * For async migration, also only scan in MOVABLE blocks. Async
- * migration is optimistic to see if the minimum amount of work
- * satisfies the allocation
- */
- if (!cc->sync && last_pageblock_nr != pageblock_nr &&
- !migrate_async_suitable(get_pageblock_migratetype(page))) {
- cc->finished_update_migrate = true;
- skipped_async_unsuitable = true;
- goto next_pageblock;
- }
-
- /*
* Check may be lockless but that's ok as we recheck later.
* It's possible to migrate LRU pages and balloon pages
* Skip any other type of page
@@ -639,7 +644,6 @@ check_compact_cluster:
next_pageblock:
low_pfn = ALIGN(low_pfn + 1, pageblock_nr_pages) - 1;
- last_pageblock_nr = pageblock_nr;
}
acct_isolated(zone, locked, cc);