The patch titled
Subject: mm/memcg: mem_cgroup_per_node is already set to 0 on allocation
has been added to the -mm tree. Its filename is
mm-memcg-mem_cgroup_per_node-is-already-set-to-0-on-allocation.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-memcg-mem_cgroup_per_node-is-already-set-to-0-on-allocation.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-memcg-mem_cgroup_per_node-is-already-set-to-0-on-allocation.patch
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------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: mm/memcg: mem_cgroup_per_node is already set to 0 on allocation
kzalloc_node() would set data to 0, so it's not necessary to set it
again.
Link: https://lkml.kernel.org/r/20220201004643.8391-1-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Roman Gushchin <guro@xxxxxx>
Reviewed-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/memcontrol.c~mm-memcg-mem_cgroup_per_node-is-already-set-to-0-on-allocation
+++ a/mm/memcontrol.c
@@ -5102,8 +5102,6 @@ static int alloc_mem_cgroup_per_node_inf
}
lruvec_init(&pn->lruvec);
- pn->usage_in_excess = 0;
- pn->on_tree = false;
pn->memcg = memcg;
memcg->nodeinfo[node] = pn;
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are
mm-memcg-mem_cgroup_per_node-is-already-set-to-0-on-allocation.patch
mm-memcg-retrieve-parent-memcg-from-cssparent.patch
mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order.patch
mm-page_alloc-add-penalty-to-local_node.patch
memcg-do-not-tweak-node-in-alloc_mem_cgroup_per_node_info.patch
