memcg: release memcg_cache_id on css offline
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- v1 Latest6 patches 1 replyIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/6 | slub: remove kmemcg id from create_unique_idmm/ | +0 | 0 replies | |
| 2/6 | slab: use mem_cgroup_id for per memcg cache naminginclude/ mm/ mm/ | +15 | 0 replies | |
| 3/6 | memcg: make memcg_cache_id staticinclude/ mm/ | +10 | 0 replies | |
| 4/6 | memcg: add pointer to owner cache to memcg_cache_paramsinclude/ mm/ | +6 | 0 replies | |
| 5/6 | memcg: keep all children of each root cache on a listinclude/ include/ mm/ +3 more | +79 | 0 replies | |
| 6/6 | memcg: release memcg_cache_id on css offlinemm/ | +36 | 0 replies |
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Cover letter [PATCH -mm 0/6] memcg: release memcg_cache_id on css offline
Hi,
Currently memcg_cache_id (mem_cgroup->kmemcg_id), which is used for indexing memcg_caches arrays, is released only on css free. As a result, offline css, whose number is actually limited only by amount of free RAM, will occupy slots in these arrays making them grow larger and larger even if there's only a few kmem active memory cgroups out there.
This patch set makes memcg release memcg_cache_id on css offline. This way the memcg_caches arrays size will be limited by the number of alive kmem-active memory cgroups, which is much better.
The work is actually done in patch 6 while patches 1-5 only prepare memcg and slab subsystems to this change.
Thanks,
Vladimir Davydov (6):
slub: remove kmemcg id from create_unique_id
slab: use mem_cgroup_id for per memcg cache naming
memcg: make memcg_cache_id static
memcg: add pointer to owner cache to memcg_cache_params
memcg: keep all children of each root cache on a list
memcg: release memcg_cache_id on css offline
include/linux/memcontrol.h | 9 +--- include/linux/slab.h | 7 ++- mm/memcontrol.c | 112 +++++++++++++++++++++++++++----------------- mm/slab.c | 40 +++++++++------- mm/slab_common.c | 44 ++++++++--------- mm/slub.c | 45 +++++++++--------- 6 files changed, 140 insertions(+), 117 deletions(-)
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