[v4,0/2] mm, memcg: memory.{low,min} reclaim fix & cleanup

Message

Chris Down July 13, 2020, 11:04 a.m. UTC

This series contains a fix for a edge case in my earlier protection
calculation patches, and a patch to make the area overall a little more
robust to hopefully help avoid this in future.

Changes in v4:

- Fix premature OOM when checking protection on root memcg. Thanks
  Naresh and Michal for helping debug.

Chris Down (1):
  mm, memcg: Decouple e{low,min} state mutations from protection checks

Yafang Shao (1):
  mm, memcg: Avoid stale protection values when cgroup is above
    protection

 include/linux/memcontrol.h | 95 ++++++++++++++++++++++++++++++++------
 mm/memcontrol.c            | 36 ++++++---------
 mm/vmscan.c                | 20 +++-----
 3 files changed, 103 insertions(+), 48 deletions(-)