On 2021/08/14 0:21, Tejun Heo wrote:
On Fri, Aug 13, 2021 at 05:25:12PM +0800, yukuai (C) wrote:We want to support that configuration in parent cgroup will work on child cgroup in cgroup v1. The feature was once supported and was reverted in commit 67e9c74b8a87 ("cgroup: replace __DEVEL__sane_behavior with cgroup2 fs type"). Switching to cgroup v2 can support that, however, the cost is too high because all of our products are using v1, and there's a big difference in usage between v1 and v2. My question is that why is the feature reverted in cgroup v1? Is it because there are some severe problems? If not, we'll try to backport the feature to cgroup v1 again.Because __DEVEL__sane_behavior, as the name clearly indicates, was a temporary development vehicle to gradually implement cgroup2 and not an official user-facing feature. I have a hard time imagining backporting and maintaining that being less painful than moving the users to cgroup2 but that's for you guys to decide.
Hi, Tejun Thanks for your response. Best regards Kuai
