Re: [PATCH net-next v2 2/4] cgroup: bpf: Add BPF_MAP_TYPE_CGROUP_ARRAY

Hello,

On Thu, Jun 23, 2016 at 11:42:31AM +0200, Daniel Borkmann wrote:

I presume it's a valid use case to pin a cgroup map, put fds into it and
remove the pinned file expecting to continue to match on it, right? So
lifetime is really until last prog using a cgroup map somewhere gets removed
(even if not accessible from user space anymore, meaning no prog has fd and
pinned file was removed).

Yeap, from what I can see, the cgroup will stay around (even if it
gets deleted) as long as the bpf rule using it is around and that's
completely fine from cgroup side.

Thanks.

-- 
tejun