The patch titled
Subject: mm: memcg: fix memcg file_dirty numa stat
has been added to the -mm tree. Its filename is
mm-memcg-fix-memcg-file_dirty-numa-stat.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-memcg-fix-memcg-file_dirty-numa-stat.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-memcg-fix-memcg-file_dirty-numa-stat.patch
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------------------------------------------------------
From: Shakeel Butt <shakeelb@xxxxxxxxxx>
Subject: mm: memcg: fix memcg file_dirty numa stat
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 fix the file_dirty
per-memcg numa stat.
Link: https://lkml.kernel.org/r/20210108155813.2914586-1-shakeelb@xxxxxxxxxx
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: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/migrate.c~mm-memcg-fix-memcg-file_dirty-numa-stat
+++ a/mm/migrate.c
@@ -500,9 +500,9 @@ int migrate_page_move_mapping(struct add
__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);
}
}
_
Patches currently in -mm which might be from shakeelb@xxxxxxxxxx are
mm-memcg-fix-memcg-file_dirty-numa-stat.patch
mm-fix-numa-stats-for-thp-migration.patch
mm-memcg-add-swapcache-stat-for-memcg-v2.patch
