Re: [GIT PULL] cgroup changes for v3.15-rc1

[Linus Torvalds]

On Thu, Apr 3, 2014 at 12:43 PM, Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> Ah, I remembered the other way around.  We could leak cgroup_root
> reference, not the other way around.  cgroup_mount() can be called
> multiple times for the same sb and we inc cgroup_root's ref each time
> but cgroup_kill_sb() only happens when the sb is released, so if we do
> the following,

Oh, Christ, I see what you are talking about.

That interface is all kinds of crazy.

> The cgroup_root should be destroyed but it isn't, I think.  We'd need
> to bump cgroup_root's refcnt only when a new sb is created.  It's
> kinda ugly.  Hmmm...

Ok, so I guess we can use that "new_sb_created" thing, and I'll redo
my merge resolution to reflect that. I do find this incredibly ugly.

              Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/