From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
zone->lock isn't hold. Let's just skip this optimization.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
diff --git a/mm/compaction.c b/mm/compaction.c
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -262,10 +262,8 @@ static unsigned long isolate_migratepage
/* Get the page and skip if free */
page = pfn_to_page(low_pfn);
- if (PageBuddy(page)) {
- low_pfn += (1 << page_order(page)) - 1;
+ if (PageBuddy(page))
continue;
- }
/* Try isolate the page */
if (__isolate_lru_page(page, ISOLATE_BOTH, 0) != 0)
--
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