From: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Subject: mm/vmscan.c: fix recent_rotated history Johannes pointed that after 886cf1901db9 we lost all zone_reclaim_stat::recent_rotated history. This commit fixes that. Link: http://lkml.kernel.org/r/155905972210.26456.11178359431724024112.stgit@localhost.localdomain Fixes: 886cf1901db9 ("mm: move recent_rotated pages calculation to shrink_inactive_list()") Signed-off-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Reported-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/vmscan.c~mm-fix-recent_rotated-history +++ a/mm/vmscan.c @@ -1953,8 +1953,8 @@ shrink_inactive_list(unsigned long nr_to if (global_reclaim(sc)) __count_vm_events(item, nr_reclaimed); __count_memcg_events(lruvec_memcg(lruvec), item, nr_reclaimed); - reclaim_stat->recent_rotated[0] = stat.nr_activate[0]; - reclaim_stat->recent_rotated[1] = stat.nr_activate[1]; + reclaim_stat->recent_rotated[0] += stat.nr_activate[0]; + reclaim_stat->recent_rotated[1] += stat.nr_activate[1]; move_pages_to_lru(lruvec, &page_list); _
