On Tue, Oct 11, 2022 at 07:04:32AM -1000, Tejun Heo <tj@xxxxxxxxxx> wrote: > Wouldn't it make sense to fix the test? With recursive_prot on, the cgroup > actually is under low protection and it seems like the correct behavior is > to report the low events accordingly. It depends whether the there is a residual protection that the memory.low=0 sibling can use (with memory_recursiveprot). In the discussed LTP test, there should be no residual protection that would justify the apparently misreported memory.low events. I.e. the test is correct, the failure points to a subtle issue with distributing residual protection among siblings. Been there, (haven't) done that: 1) https://bugzilla.suse.com/show_bug.cgi?id=1196298 2) https://lore.kernel.org/r/20220325103118.GC2828@xxxxxxxxxxxxxxxxx/ HTH, Michal
