From 74f834e9e273947bbba4af68f8ba39a656fff282 Mon Sep 17 00:00:00 2001
From: Anita Zhang <the.anitazha@gmail.com>
Date: Thu, 28 Jan 2021 15:47:26 -0800
Subject: [PATCH] oom: skip over cgroups with no memory usage

---
 src/oom/oomd-util.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/oom/oomd-util.c b/src/oom/oomd-util.c
index 8f138d64c6..fa8b8b70b1 100644
--- a/src/oom/oomd-util.c
+++ b/src/oom/oomd-util.c
@@ -219,7 +219,8 @@ int oomd_kill_by_pgscan(Hashmap *h, const char *prefix, bool dry_run) {
                 return r;
 
         for (int i = 0; i < r; i++) {
-                if (sorted[i]->pgscan == 0)
+                /* Skip cgroups with no reclaim and memory usage; it won't alleviate pressure */
+                if (sorted[i]->pgscan == 0 && sorted[i]->current_memory_usage == 0)
                         break;
 
                 r = oomd_cgroup_kill(sorted[i]->path, true, dry_run);