Hello Tejun, On 10 January 2018 at 15:02, Tejun Heo <tj@xxxxxxxxxx> wrote: > Hello, > > On Wed, Jan 10, 2018 at 04:44:14AM -0800, Roman Gushchin wrote: >> cgroup.threads is not listed because it's not delegatable (doesn't have >> CFTYPE_NS_DELEGATABLE flag set). I don't know if it was intended or just >> an accident (I believe the latter). > > So, thread mode isn't delegatble. Marking a cgroup as threaded turns > that subtree threaded and join the parent's domain, so we can't allow > delegation roots to be turned threaded - just like we can't mark the > root cgroup threaded, and I'm not really not sure what it means to > delegate a portion of threaded subtree. So, I am confused. According to Documentation/cgroup-v2.txt, cgoup.threads is delegated: [[ Model of Delegation ~~~~~~~~~~~~~~~~~~~ A cgroup can be delegated in two ways. First, to a less privileged user by granting write access of the directory and its "cgroup.procs", "cgroup.threads" and "cgroup.subtree_control" files to the user. Second, if the "nsdelegate" mount option is set, automatically to a cgroup namespace on namespace creation. ]] So, is that a mistake in that text file? Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
