v6:
- The memcg_test_low failure is indeed due to the memory_recursiveprot
mount option which is enabled by default in systemd cgroup v2 setting.
So adopt Michal's suggestion to adjust the low event checking
according to whether memory_recursiveprot is enabled or not.
v5:
- Use mem_cgroup_usage() in patch 1 as originally suggested by Johannes.
The test_memcontrol selftest consistently fails its test_memcg_low
sub-test (with memory_recursiveprot enabled) and sporadically fails
its test_memcg_min sub-test. This patchset fixes the test_memcg_min
and test_memcg_low failures by skipping the !usage case in
shrink_node_memcgs() and adjust the test_memcontrol selftest to fix
other causes of the test failures.
Waiman Long (2):
mm/vmscan: Skip memcg with !usage in shrink_node_memcgs()
selftests: memcg: Increase error tolerance of child memory.current
check in test_memcg_protection()
mm/internal.h | 9 +++++++++
mm/memcontrol-v1.h | 2 --
mm/vmscan.c | 4 ++++
.../selftests/cgroup/test_memcontrol.c | 20 ++++++++++++-------
4 files changed, 26 insertions(+), 9 deletions(-)
--
2.48.1
