[0/2] mm, slab: Extend vm/drop_caches to shrink kmem slabs

Message

Waiman Long June 24, 2019, 5:42 p.m. UTC

The purpose of this patchset is to allow system administrators to have
the ability to shrink all the kmem slabs in order to free up memory
and get a more accurate picture of how many slab objects are actually
being used.

Patch 1 adds a new memcg_iterate_all() that is used by the patch 2 to
iterate on all the memory cgroups.

Waiman Long (2):
  mm, memcontrol: Add memcg_iterate_all()
  mm, slab: Extend vm/drop_caches to shrink kmem slabs

 Documentation/sysctl/vm.txt | 11 ++++++++--
 fs/drop_caches.c            |  4 ++++
 include/linux/memcontrol.h  |  3 +++
 include/linux/slab.h        |  1 +
 kernel/sysctl.c             |  4 ++--
 mm/memcontrol.c             | 13 +++++++++++
 mm/slab_common.c            | 44 +++++++++++++++++++++++++++++++++++++
 7 files changed, 76 insertions(+), 4 deletions(-)