[PATCHSET cgroup/for-3.12] cgroup: factor out css creation into create_css()

[Li Zefan]

On 2013/8/29 5:03, Tejun Heo wrote:
> Hello,
> 
> For unified hierarchy, a css's (cgroup_subsys_state) lifetime will be
> different from that of the associated cgroup.  css's may be created
> and destroyed dynamically over the lifetime of a single cgroup.  The
> previous changes decoupled css destruction from cgroup's.  This
> patchset decouples css creation from cgroup's.
> 
> This patchset contains the following nine patches.
> 
>  0001-cgroup-fix-css-leaks-on-online_css-failure.patch
>  0002-cgroup-css-iterations-and-css_from_dir-are-safe-unde.patch
>  0003-cgroup-make-for_each_subsys-useable-under-cgroup_roo.patch
>  0004-cgroup-move-css_id-commit-from-cgroup_populate_dir-t.patch
>  0005-cgroup-reorder-operations-in-cgroup_create.patch
>  0006-cgroup-combine-css-handling-loops-in-cgroup_create.patch
>  0007-cgroup-factor-out-cgroup_subsys_state-creation-into-.patch
>  0008-cgroup-implement-for_each_css.patch
>  0009-cgroup-remove-for_each_root_subsys.patch
> 

Acked-by: Li Zefan <lizefan at huawei.com>