Messages in this thread | | | Date | Tue, 10 Nov 2020 10:57:23 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH v2] mm: memcg/slab: Fix root memcg vmstats |
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On Tue, 10 Nov 2020, Muchun Song wrote:
> If we reparent the slab objects to the root memcg, when we free > the slab object, we need to update the per-memcg vmstats to keep > it correct for the root memcg. Now this at least affects the vmstat > of NR_KERNEL_STACK_KB for !CONFIG_VMAP_STACK when the thread stack > size is smaller than the PAGE_SIZE. > > Fixes: ec9f02384f60 ("mm: workingset: fix vmstat counters for shadow nodes") > Signed-off-by: Muchun Song <songmuchun@bytedance.com> > Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: David Rientjes <rientjes@google.com>
I assume that without this fix that the root memcg's vmstat would always be inflated if we reparented? If that's accurate, perhaps this is deserving of a
Cc: stable@vger.kernel.org # 5.3+
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