> Memory controller had begun to print warning messages when using some > attributes that do no have a counterpart in its cgroup v2 > implementation. This is informative to users who run (unwittingly) on v1 > or to distros that run v1 (they can learn about such users or prepare > for disabling v1 configs). > > I consider the deprecated files in three categories: > - RE) replacement exists, > - DN) dropped as non-ideal concept (e.g. non-hierarchical resources), > - NE) not evaluated (yet). > > For RE, I added the replacement into the warning message, DN have only a > plain deprecation message and I marked the commits with NE as RFC. > Also I'd be happy if you would point out some forgotten knobs that'd > deserve similar warnings. > > The level of messages is info to avoid too much noise (may be increased > in future when there are fewer users). Some knobs from DN have warn > level. > > The net_cls and net_prio controllers that only exist on v1 hierarchies > have no straightforward action for users (replacement would rely on net > NS or eBPF), so messages for their usage are omitted, although it'd be > good to eventually retire that code in favor of aforementioned. > > At the end are some cleanup patches I encountered en route. For the block related parts, as I'm assuming Tejun will pick this up: Acked-by: Jens Axboe <axboe@xxxxxxxxx> -- Jens Axboe
