linux-kernel - Re: cgroups(7): documenting /sys/kernel/cgroup files

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 10 Jan 2018 06:32:21 -0800
From:   Roman Gushchin <guro@...com>
To:     Tejun Heo <tj@...nel.org>
CC:     "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        linux-man <linux-man@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>
Subject: Re: cgroups(7): documenting /sys/kernel/cgroup files

On Wed, Jan 10, 2018 at 06:02:39AM -0800, Tejun Heo 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.

Thank you for the clarification!

Roman