As pointed out by Hugh Dickins, "mm: migrate: Check page_count of THP
before migrating" can leave nr_isolated_anon elevated, correct it. This
is a fix to mm-migrate-check-page_count-of-thp-before-migrating.patch
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
---
mm/migrate.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index f466827..c387786 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1689,8 +1689,11 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
if (!isolated || page_count(page) != 2) {
count_vm_events(PGMIGRATE_FAIL, HPAGE_PMD_NR);
put_page(new_page);
- if (isolated)
+ if (isolated) {
putback_lru_page(page);
+ isolated = 0;
+ goto out;
+ }
goto out_keep_locked;
}
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>