The kernel updates the per-node NR_FILE_DIRTY stats on page migration
but not the memcg numa stats. That was not an issue until recently the
commit 5f9a4f4a7096 ("mm: memcontrol: add the missing numa_stat interface
for cgroup v2") exposed numa stats for the memcg. So fixing the
file_dirty per-memcg numa stat.
Fixes: 5f9a4f4a7096 ("mm: memcontrol: add the missing numa_stat interface for cgroup v2")
Signed-off-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Acked-by: Yang Shi <shy828301@xxxxxxxxx>
Reviewed-by: Roman Gushchin <guro@xxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
---
Changes since v1:
- none
mm/migrate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index ee5e612b4cd8..613794f6a433 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -500,9 +500,9 @@ int migrate_page_move_mapping(struct address_space *mapping,
__inc_lruvec_state(new_lruvec, NR_SHMEM);
}
if (dirty && mapping_can_writeback(mapping)) {
- __dec_node_state(oldzone->zone_pgdat, NR_FILE_DIRTY);
+ __dec_lruvec_state(old_lruvec, NR_FILE_DIRTY);
__dec_zone_state(oldzone, NR_ZONE_WRITE_PENDING);
- __inc_node_state(newzone->zone_pgdat, NR_FILE_DIRTY);
+ __inc_lruvec_state(new_lruvec, NR_FILE_DIRTY);
__inc_zone_state(newzone, NR_ZONE_WRITE_PENDING);
}
}
--
2.29.2.729.g45daf8777d-goog
