From: Tejun Heo <tj@kernel.org>
To: "Serge E. Hallyn" <serge.hallyn@ubuntu.com>
Cc: serge@hallyn.com, linux-kernel@vger.kernel.org,
adityakali@google.com, linux-api@vger.kernel.org,
containers@lists.linux-foundation.org, cgroups@vger.kernel.org,
lxc-devel@lists.linuxcontainers.org, akpm@linux-foundation.org,
ebiederm@xmission.com
Subject: Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns
Date: Mon, 30 Nov 2015 10:09:38 -0500 [thread overview]
Message-ID: <20151130150938.GF3535@mtj.duckdns.org> (raw)
In-Reply-To: <20151127051745.GA24521@mail.hallyn.com>
Hello, Serge.
On Thu, Nov 26, 2015 at 11:17:45PM -0600, Serge E. Hallyn wrote:
> > Wouldn't it be simpler to walk dentry from kernfs root than
> > duplicating dentry instantiation?
>
> Sorry I don't think I'm following. Are you suggesting walking the
> kn->parent chain backward and doing d_lookup() at each point starting
> with sb->s_root?
Yeah, something like that. I wonder whether there are already code
paths doing that. What we need is a straight path walk. I could be
wrong but it shouldn't be that complex and if it works out we can
avoid introducing another instantiation / lookup path.
Thanks.
--
tejun
next prev parent reply other threads:[~2015-11-30 15:09 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-16 19:51 CGroup Namespaces (v4) serge
2015-11-16 19:51 ` [PATCH 1/8] kernfs: Add API to generate relative kernfs path serge
2015-11-24 16:16 ` Tejun Heo
2015-11-24 16:17 ` Tejun Heo
2015-11-24 17:43 ` Serge E. Hallyn
2015-11-27 5:25 ` Serge E. Hallyn
2015-11-30 15:11 ` Tejun Heo
2015-11-30 18:37 ` Serge E. Hallyn
2015-11-30 22:53 ` Tejun Heo
2015-12-01 2:08 ` Serge E. Hallyn
2015-11-16 19:51 ` [PATCH 2/8] sched: new clone flag CLONE_NEWCGROUP for cgroup namespace serge
2015-11-16 19:51 ` [PATCH 3/8] cgroup: add function to get task's cgroup serge
2015-11-24 16:27 ` Tejun Heo
2015-11-24 16:54 ` Tejun Heo
2015-11-16 19:51 ` [PATCH 4/8] cgroup: export cgroup_get() and cgroup_put() serge
2015-11-24 16:30 ` Tejun Heo
2015-11-24 22:35 ` Serge E. Hallyn
2015-11-16 19:51 ` [PATCH 5/8] cgroup: introduce cgroup namespaces serge
2015-11-24 16:49 ` Tejun Heo
2015-11-16 19:51 ` [PATCH 6/8] cgroup: cgroup namespace setns support serge
2015-11-24 16:52 ` Tejun Heo
2015-11-16 19:51 ` [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns serge
2015-11-24 17:16 ` Tejun Heo
2015-11-25 6:01 ` Serge E. Hallyn
2015-11-25 19:10 ` Tejun Heo
2015-11-25 19:55 ` Serge Hallyn
2015-11-25 19:57 ` Tejun Heo
2015-11-27 5:17 ` Serge E. Hallyn
2015-11-30 15:09 ` Tejun Heo [this message]
2015-12-01 4:07 ` Serge E. Hallyn
2015-12-01 16:46 ` Tejun Heo
2015-12-01 21:58 ` Serge E. Hallyn
2015-12-02 16:53 ` Tejun Heo
2015-12-02 16:56 ` Serge E. Hallyn
2015-12-02 16:58 ` Tejun Heo
2015-12-02 17:02 ` Serge E. Hallyn
2015-12-02 17:05 ` Tejun Heo
2015-12-03 22:47 ` Serge E. Hallyn
2015-12-07 15:39 ` Tejun Heo
2015-12-07 15:53 ` Serge Hallyn
2015-11-16 19:51 ` [PATCH 8/8] cgroup: Add documentation for cgroup namespaces serge
2015-11-24 17:16 ` Tejun Heo
2015-11-16 20:41 ` CGroup Namespaces (v4) Richard Weinberger
2015-11-16 20:46 ` Serge E. Hallyn
2015-11-16 20:50 ` Richard Weinberger
2015-11-16 20:54 ` Serge E. Hallyn
2015-11-16 22:24 ` Eric W. Biederman
2015-11-16 22:37 ` Tejun Heo
2015-11-17 1:13 ` Serge E. Hallyn
2015-11-17 1:40 ` Serge E. Hallyn
2015-11-17 3:54 ` Serge E. Hallyn
2015-11-18 2:30 ` Serge E. Hallyn
2015-11-18 9:18 ` Eric W. Biederman
2015-11-18 15:43 ` Serge E. Hallyn
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