On 3/5/25 5:17 AM, Michal Koutný wrote:
On Tue, Mar 04, 2025 at 06:55:02AM -1000, Tejun Heo <tj@xxxxxxxxxx> wrote:
I'm hoping that we could deprecate /proc/cgroups entirely. Maybe we can just
warn whenever the file is accessed?
I added the guard with legacy systems (i.e. make this backportable) in
mind which start with no cgroupfs mounted at all and until they decide
to continue either v1 or v2 way, looking at /proc/cgroups is fine.
It should warn users that look at /proc/cgroups in cases when it bears
no valid information.
I like the idea of warning users about using /etc/cgroups if no v1
filesystem is mounted. It makes sense to make it backportable to older
kernel. We can always add a follow-up patch later to always warn about it.
Acked-by: Waiman Long <longman@xxxxxxxxxx>
