On Wed 24-07-13 17:59:55, Li Zefan wrote: > As cgroup id has been used in netprio cgroup and will be used in memcg, > it's important to make it clear how a cgroup id is allocated. > > For example, in netprio cgroup, the id is used as index of an array. > > Signed-off-by: Li Zefan <[email protected]>
Reviewed-by: Michal Hocko <[email protected]> > --- > include/linux/cgroup.h | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h > index 2bd052d..8c107e9 100644 > --- a/include/linux/cgroup.h > +++ b/include/linux/cgroup.h > @@ -161,7 +161,13 @@ struct cgroup_name { > struct cgroup { > unsigned long flags; /* "unsigned long" so bitops work */ > > - int id; /* idr allocated in-hierarchy ID */ > + /* > + * idr allocated in-hierarchy ID. > + * > + * The ID of the root cgroup is always 0, and a new cgroup > + * will be assigned with a smallest available ID. > + */ > + int id; > > /* > * We link our 'sibling' struct into our parent's 'children'. > -- > 1.8.0.2 > > -- > To unsubscribe from this list: send the line "unsubscribe cgroups" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
