Hi!

We would like to ensure that a process inherits memory limits from the parent if the parent cgroup has limits set.
This would involve writing 1 to memory.use_hierarchy in the parent cgroup, and we plan to submit a PR to runc which does this if a boolean property is set on the spec.
We suggest adding the following property to the LinuxMemory type in specs-go/config.go.

// LinuxMemory for Linux cgroup 'memory' resource management
type LinuxMemory struct {
  // Memory limit (in bytes).
  Limit *int64 `json:"limit,omitempty"`
  ...
  // Use Hierarchy for children to inherit parent memory limits
  UseHierarchy bool `json:"useHierarchy,omitempty"`
}

Interested to hear your thoughts! Thanks :)

cc @ostenbom