cgroup: add cgroup_favordynmods= command-line option
We have a need of using favordynmods with cgroup v1, which doesn't support changing mount flags during remount. Enabling CONFIG_CGROUP_FAVOR_DYNMODS at build-time is not an option because we want to be able to selectively enable it for certain systems. This commit addresses this by introducing the cgroup_favordynmods= command-line option. This option works for both cgroup v1 and v2 and also allows for disabling favorynmods when the kernel built with CONFIG_CGROUP_FAVOR_DYNMODS=y. Also, note that when cgroup_favordynmods=true favordynmods is never disabled in cgroup_destroy_root(). Signed-off-by:Luiz Capitulino <luizcap@amazon.com> Reviewed-by:
Michal Koutný <mkoutny@suse.com> Signed-off-by:
Tejun Heo <tj@kernel.org>
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