slub: make dead caches discard free slabs immediately
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v2 Latest3 patches 22 repliesIn review
- v13 patches 20 repliesSuperseded
Changes in v2 from the cover letter
- address Christoph's concerns regarding kmem_cache_shrink
- fix race between put_cpu_partial reading ->cpu_partial and kmem_cache_shrink updating it as proposed by Joonsoo
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | slub: never fail to shrink cachemm/ | +30 | 16 replies | |
| 2/3 | slub: fix kmem_cache_shrink return valuemm/ | +5 | 3 replies | |
| 3/3 | slub: make dead caches discard free slabs immediatelymm/ mm/ mm/ +2 more | +43 | 3 replies |
Reviews trailers per patch
2 of 3 patches have a Reviewed-by or Acked-by.
| Patch | Christoph Lameter | Pekka Enberg |
|---|---|---|
| 1/3 | A-b | A-b |
| 2/3 | A-b | |
| 3/3 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH -mm v2 0/3] slub: make dead caches discard free slabs immediately
Hi,
The kmem extension of the memory cgroup is almost usable now. There is, in fact, the only serious issue left: per memcg kmem caches may pin the owner cgroup for indefinitely long. This is, because a slab cache may keep empty slab pages in its private structures to optimize performance, while we take a css reference per each charged kmem page.
The issue is only relevant to SLUB, because SLAB periodically reaps empty slabs. This patch set fixes this issue for SLUB. For details, please see patch 3.
Changes in v2:
- address Christoph's concerns regarding kmem_cache_shrink
- fix race between put_cpu_partial reading ->cpu_partial and kmem_cache_shrink updating it as proposed by Joonsoo
v1: https://lkml.org/lkml/2015/1/26/317
Thanks,
Vladimir Davydov (3):
slub: never fail to shrink cache
slub: fix kmem_cache_shrink return value
slub: make dead caches discard free slabs immediately
mm/slab.c | 4 +-- mm/slab.h | 2 +- mm/slab_common.c | 15 +++++++-- mm/slob.c | 2 +- mm/slub.c | 94 +++++++++++++++++++++++++++++++++++------------------- 5 files changed, 78 insertions(+), 39 deletions(-)
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