The commit is pushed to "branch-rh7-3.10.0-1127.vz7.150.x-ovz" and will appear
at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-1127.vz7.150.8
------>
commit e6b9d2fd9553518998e59e720798baeb56c80f0b
Author: Kirill Tkhai <[email protected]>
Date: Thu May 7 21:30:06 2020 +0300
mm: Move memcg_uncharge_kmem() to bottom of __memcg_uncharge_slab()
memcg_uncharge_kmem() potentially may put last css counter. After
that we can't touch memcg memory anymore.
Signed-off-by: Kirill Tkhai <[email protected]>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index b4484567ce82f..797cb8e6df6d7 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3574,7 +3574,6 @@ void __memcg_uncharge_slab(struct kmem_cache *s, unsigned
int nr_pages)
VM_BUG_ON(is_root_cache(s));
memcg = s->memcg_params.memcg;
- memcg_uncharge_kmem(memcg, nr_pages);
if (s->flags & SLAB_RECLAIM_ACCOUNT) {
page_counter_uncharge(&memcg->dcache, nr_pages);
idx = MEM_CGROUP_STAT_SLAB_RECLAIMABLE;
@@ -3583,6 +3582,7 @@ void __memcg_uncharge_slab(struct kmem_cache *s, unsigned
int nr_pages)
idx = MEM_CGROUP_STAT_SLAB_UNRECLAIMABLE;
this_cpu_sub(memcg->stat->count[idx], nr_pages);
}
+ memcg_uncharge_kmem(memcg, nr_pages);
}
/*
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