From 388d308dbcef7f7580e11844098b8dc45d307bf0 Mon Sep 17 00:00:00 2001 From: Kalesh Singh Date: Tue, 14 Feb 2023 14:17:57 -0800 Subject: [PATCH] ANDROID: MGLRU: Don't skip anon reclaim if swap low MGLRU tries to avoid doing unnecessary anon reclaim work if swap is low by checking if the available swap is less than the MIN_BATCH_SIZE (256kB). This can lead to unintened consequences where PSI pressure is less and LMKD doesn't wake up in time to avoid file cache thrashing. Remove this check to preserve the old bahavior. This can be improved later on once we have a low swap notification event from the kernel. Bug: 268574308 Change-Id: Id381316931a9cf6e7ea8b1ea7800c77f176c9892 Signed-off-by: Kalesh Singh Signed-off-by: Santhosh --- mm/vmscan.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index a8dd6a9b46f9..0dfa185e3ab1 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2643,9 +2643,6 @@ static int get_swappiness(struct lruvec *lruvec, struct scan_control *sc) { struct mem_cgroup *memcg = lruvec_memcg(lruvec); - if (mem_cgroup_get_nr_swap_pages(memcg) < MIN_LRU_BATCH) - return 0; - return mem_cgroup_swappiness(memcg); }