[CRIU] [PATCH] cgroups: don't take into account a leading / for the "/" parent

[Pavel Emelyanov]

On 08/25/2014 06:05 PM, Andrew Vagin wrote:
> Without this patch, we dump somethin like this:
> {
> 	cnames: "hugetlb"
> 	dirs: 	{
> 		dir_name: ""
> 		children: 		{
> 			dir_name: "ewroot"
> 			children: <empty>
> 			properties: <empty>
> 		}
> 
> 		properties: <empty>
> 	}
> 
> }
> 
> It's obvious, that dir_name should be newroot.
> 
> The problem is reproduced, if a task leaves in "/" and has a subgroup.
> This issue was caught by a chance. The cgroup02 test doesn't clean up
> controllers and leaves the "newroot" there. So when we executed a cgroup
> test after cgroup02, we could find many directories like "ewroot",
> "wroot", etc. This patch fixes this issue.
> 
> Signed-off-by: Andrew Vagin <avagin at openvz.org>

Applied