Hi, This is the 14th iteration of Glauber Costa's patch-set implementing slab shrinking on memcg pressure. The main idea is to make the list_lru structure used by most FS shrinkers per-memcg. When adding or removing an element from a list_lru, we use the page information to figure out which memcg it belongs to and relay it to the appropriate list. This allows scanning kmem objects accounted to different memcgs independently. Please note that this patch-set implements slab shrinking only when we hit the user memory limit so that kmem allocations will still fail if we are below the user memory limit, but close to the kmem limit. I am going to fix this in a separate patch-set, but currently it is only worthwhile setting the kmem limit to be greater than the user mem limit just to enable per-memcg slab accounting and reclaim. The patch-set is based on top of Linux-3.13-rc4 and organized as follows: - patches 1-11 prepare vmscan, memcontrol, list_lru to kmemcg reclaim; - patches 12, 13 implement the kmemcg reclaim core; - patch 14 makes the list_lru struct per-memcg and patch 15 marks the super_block shrinker as memcg-aware; - patches 16-18 slightly improve memcontrol behavior regarding mem reclaim. Changes in v14: - do not change list_lru interface, introduce new shrink functions instead; - remove NUMA awareness from per-memcg LRUs; - improve synchronization between list_lru creation and kmemcg activation; - various small fixes/improvements and code cleanup. Previous iterations of this patch-set can be found here: - https://lkml.org/lkml/2013/12/9/103 (v13) - https://lkml.org/lkml/2013/12/2/141 (v12) - https://lkml.org/lkml/2013/11/25/214 (v11) Thanks. Glauber Costa (7): memcg: make cache index determination more robust memcg: consolidate callers of memcg_cache_id memcg: move initialization to memcg creation vmscan: take at least one pass with shrinkers vmpressure: in-kernel notifications memcg: reap dead memcgs upon global memory pressure memcg: flush memcg items upon memcg destruction Vladimir Davydov (11): memcg: make for_each_mem_cgroup macros public memcg: remove KMEM_ACCOUNTED_ACTIVATED flag memcg: rework memcg_update_kmem_limit synchronization list_lru, shrinkers: introduce list_lru_shrink_{count,walk} fs: consolidate {nr,free}_cached_objects args in shrink_control vmscan: move call to shrink_slab() to shrink_zones() vmscan: remove shrink_control arg from do_try_to_free_pages() vmscan: call NUMA-unaware shrinkers irrespective of nodemask vmscan: shrink slab on memcg pressure list_lru: add per-memcg lists fs: make shrinker memcg aware fs/dcache.c | 14 +- fs/gfs2/quota.c | 6 +- fs/inode.c | 7 +- fs/internal.h | 7 +- fs/super.c | 34 ++- fs/xfs/xfs_buf.c | 7 +- fs/xfs/xfs_qm.c | 7 +- fs/xfs/xfs_super.c | 7 +- include/linux/fs.h | 6 +- include/linux/list_lru.h | 112 +++++++-- include/linux/memcontrol.h | 50 ++++ include/linux/shrinker.h | 10 +- include/linux/vmpressure.h | 5 + mm/list_lru.c | 257 +++++++++++++++++-- mm/memcontrol.c | 584 ++++++++++++++++++++++++++++++++------------ mm/vmpressure.c | 53 +++- mm/vmscan.c | 170 ++++++++----- 17 files changed, 1017 insertions(+), 319 deletions(-) -- 1.7.10.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>