The patch titled
Subject: mm: memcontrol: replace node summing with memcg_page_state()
has been added to the -mm tree. Its filename is
mm-memcontrol-replace-node-summing-with-memcg_page_state.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-replace-node-summing-with-memcg_page_state.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-replace-node-summing-with-memcg_page_state.patch
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------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memcontrol: replace node summing with memcg_page_state()
Instead of adding up the node counters, use memcg_page_state() to get the
memcg state directly. This is a bit cheaper and more stream-lined.
Link: http://lkml.kernel.org/r/20190228163020.24100-4-hannes@xxxxxxxxxxx
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Roman Gushchin <guro@xxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/mm/memcontrol.c~mm-memcontrol-replace-node-summing-with-memcg_page_state
+++ a/mm/memcontrol.c
@@ -746,10 +746,13 @@ static unsigned long mem_cgroup_nr_lru_p
unsigned int lru_mask)
{
unsigned long nr = 0;
- int nid;
+ enum lru_list lru;
- for_each_node_state(nid, N_MEMORY)
- nr += mem_cgroup_node_nr_lru_pages(memcg, nid, lru_mask);
+ for_each_lru(lru) {
+ if (!(BIT(lru) & lru_mask))
+ continue;
+ nr += memcg_page_state(memcg, NR_LRU_BASE + lru);
+ }
return nr;
}
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
mm-memcontrol-track-lru-counts-in-the-vmstats-array.patch
mm-memcontrol-replace-zone-summing-with-lruvec_page_state.patch
mm-memcontrol-replace-node-summing-with-memcg_page_state.patch
mm-memcontrol-push-down-mem_cgroup_node_nr_lru_pages.patch
mm-memcontrol-push-down-mem_cgroup_nr_lru_pages.patch
mm-memcontrol-quarantine-the-mem_cgroup_nr_lru_pages-api.patch
