The patch titled
memcg: fix thresholds with use_hierarchy == 1
has been added to the -mm tree. Its filename is
memcg-fix-thresholds-with-use_hierarchy-==-1.patch
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------------------------------------------------------
Subject: memcg: fix thresholds with use_hierarchy == 1
From: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
We need to check parent's thresholds if parent has use_hierarchy == 1 to
be sure that parent's threshold events will be triggered even if parent
itself is not active (no MEM_CGROUP_EVENTS).
Signed-off-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
Reviewed-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff -puN mm/memcontrol.c~memcg-fix-thresholds-with-use_hierarchy-==-1 mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-fix-thresholds-with-use_hierarchy-==-1
+++ a/mm/memcontrol.c
@@ -3587,9 +3587,13 @@ unlock:
static void mem_cgroup_threshold(struct mem_cgroup *memcg)
{
- __mem_cgroup_threshold(memcg, false);
- if (do_swap_account)
- __mem_cgroup_threshold(memcg, true);
+ while (memcg) {
+ __mem_cgroup_threshold(memcg, false);
+ if (do_swap_account)
+ __mem_cgroup_threshold(memcg, true);
+
+ memcg = parent_mem_cgroup(memcg);
+ }
}
static int compare_thresholds(const void *a, const void *b)
_
Patches currently in -mm which might be from kirill@xxxxxxxxxxxxx are
memcg-fix-thresholds-with-use_hierarchy-==-1.patch
linux-next.patch
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