diff options
Diffstat (limited to 'mm/compaction.c')
| -rw-r--r-- | mm/compaction.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index e0ab02d70f13..b48c5259ea33 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -523,7 +523,10 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc, if (!isolation_suitable(cc, page)) goto next_pageblock; - /* Skip if free */ + /* + * Skip if free. page_order cannot be used without zone->lock + * as nothing prevents parallel allocations or buddy merging. + */ if (PageBuddy(page)) continue; |