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(-) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
