linux-kernel - Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns

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Message-ID: <20151202170239.GA21009@mail.hallyn.com>
Date:	Wed, 2 Dec 2015 11:02:39 -0600
From:	"Serge E. Hallyn" <serge.hallyn@...ntu.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	"Serge E. Hallyn" <serge.hallyn@...ntu.com>, serge@...lyn.com,
	linux-kernel@...r.kernel.org, adityakali@...gle.com,
	linux-api@...r.kernel.org, containers@...ts.linux-foundation.org,
	cgroups@...r.kernel.org, lxc-devel@...ts.linuxcontainers.org,
	akpm@...ux-foundation.org, ebiederm@...ssion.com
Subject: Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init
 cgroupns

On Wed, Dec 02, 2015 at 11:58:39AM -0500, Tejun Heo wrote:
> On Wed, Dec 02, 2015 at 10:56:37AM -0600, Serge E. Hallyn wrote:
> > Can it be flushed when we know that the cgroup is being pinned by
> > a css_set?  (There's either a task or a cgroup_namespace pinning it
> > or we wouldn't get here)
> 
> Yeap, it can be flushed.  There's no ref coming out of cgroup to the
> vfs objects.

Ok, thanks.  Still seems to me to be more work to actually walk the
path ourselves, but I'll go that route and see what it looks like :)

thanks
-serge
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