On Tue, Jun 25, 2019 at 13:16:21 +0200, Pavel Hrdina wrote:
This affects only cgroups v2 where enabled controllers are not based on available mount points but on the list provided in cgroup.controllers file. However, moving it will fill in placement as well, so it needs to be freed together with mount point if we don't need that controller.
Before this patch we were assuming that all controllers available in root cgroup where available in all other sub-cgroups which was wrong.
In order to fix it we need to move the cgroup controllers detection after cgroup placement was prepared in order to build correct path for cgroup.controllers file.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> ---
Notes: Changes in v3: - Moving the detection after placement means we need to free it together with mount point if that controller is not required.
ACK