Messages in this thread | | | Date | Thu, 19 Jun 2008 11:30:58 +0900 | From | Daisuke Nishimura <> | Subject | Re: [PATCH] cgroup: support checking of subsystem dependencies |
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On Thu, 19 Jun 2008 08:40:24 +0800, Li Zefan <lizf@cn.fujitsu.com> wrote: > KAMEZAWA Hiroyuki wrote: > > On Wed, 18 Jun 2008 16:01:49 +0800 > > Li Zefan <lizf@cn.fujitsu.com> wrote: > > > >> This allows one subsystem to require that it only be mounted when some > >> other subsystems are also present in the proposed hierarchy. > >> > >> For example if subsystem foo depends on bar, the following will fail: > >> # mount -t cgroup -ofoo xxx /dev/cgroup > >> > >> You should mount with both subsystems: > >> # mount -t cgroup -ofoo,bar xxx /dev/cgroup > >> > > I'm just curious. May I ask "Is there such cgroup subsystem now ?" > > > > Currently no, but people who are developing or wants to develop new subsystems > may find this useful, for example Daisuke Nishimura-san's swap controller. > My current version is implemented as addon to memory controller, so it can be used by just mounting memory controller :)
But anyway, this feature might be used in future by some subsystems.
Thanks, Daisuke Nishimura.
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