From: "Serge E. Hallyn" <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: adityakali-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
lxc-devel-cunTk1MwBs9qMoObBWhMNEqPaTDuhLve2LY78lusg7I@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns
Date: Wed, 2 Dec 2015 11:02:39 -0600 [thread overview]
Message-ID: <20151202170239.GA21009@mail.hallyn.com> (raw)
In-Reply-To: <20151202165839.GD19878-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
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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WARNING: multiple messages have this Message-ID (diff)
From: "Serge E. Hallyn" <serge.hallyn@ubuntu.com>
To: Tejun Heo <tj@kernel.org>
Cc: "Serge E. Hallyn" <serge.hallyn@ubuntu.com>,
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: Wed, 2 Dec 2015 11:02:39 -0600 [thread overview]
Message-ID: <20151202170239.GA21009@mail.hallyn.com> (raw)
In-Reply-To: <20151202165839.GD19878@mtj.duckdns.org>
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
next prev parent reply other threads:[~2015-12-02 17:02 UTC|newest]
Thread overview: 146+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-16 19:51 CGroup Namespaces (v4) serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-1-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-16 19:51 ` [PATCH 1/8] kernfs: Add API to generate relative kernfs path serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-2-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 16:16 ` Tejun Heo
2015-11-24 16:16 ` Tejun Heo
2015-11-24 16:16 ` Tejun Heo
[not found] ` <20151124161630.GL17033-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-24 16:17 ` Tejun Heo
2015-11-24 16:17 ` Tejun Heo
[not found] ` <20151124161709.GM17033-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-24 17:43 ` Serge E. Hallyn
2015-11-24 17:43 ` Serge E. Hallyn
2015-11-24 17:43 ` Serge E. Hallyn
2015-11-24 16:17 ` Tejun Heo
2015-11-27 5:25 ` Serge E. Hallyn
2015-11-27 5:25 ` Serge E. Hallyn
2015-11-27 5:25 ` Serge E. Hallyn
[not found] ` <20151127052511.GA25490-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-30 15:11 ` Tejun Heo
2015-11-30 15:11 ` Tejun Heo
2015-11-30 15:11 ` Tejun Heo
[not found] ` <20151130151147.GG3535-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-30 18:37 ` Serge E. Hallyn
2015-11-30 18:37 ` Serge E. Hallyn
2015-11-30 22:53 ` Tejun Heo
[not found] ` <20151130225318.GD9039-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-01 2:08 ` Serge E. Hallyn
2015-12-01 2:08 ` Serge E. Hallyn
2015-12-01 2:08 ` Serge E. Hallyn
[not found] ` <20151130183758.GA25433-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-30 22:53 ` Tejun Heo
2015-11-30 18:37 ` Serge E. Hallyn
2015-11-16 19:51 ` [PATCH 2/8] sched: new clone flag CLONE_NEWCGROUP for cgroup namespace serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
2015-11-16 19:51 ` serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` [PATCH 3/8] cgroup: add function to get task's cgroup serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-4-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 16:27 ` Tejun Heo
2015-11-24 16:27 ` Tejun Heo
[not found] ` <20151124162728.GN17033-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-24 16:54 ` Tejun Heo
2015-11-24 16:54 ` 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-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-5-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 16:30 ` Tejun Heo
2015-11-24 16:30 ` Tejun Heo
[not found] ` <20151124163056.GO17033-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-24 22:35 ` Serge E. Hallyn
2015-11-24 22:35 ` Serge E. Hallyn
2015-11-24 22:35 ` Serge E. Hallyn
2015-11-16 19:51 ` serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` [PATCH 5/8] cgroup: introduce cgroup namespaces serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-6-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 16:49 ` Tejun Heo
2015-11-24 16:49 ` Tejun Heo
2015-11-24 16:49 ` Tejun Heo
2015-11-16 19:51 ` [PATCH 6/8] cgroup: cgroup namespace setns support serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-7-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 16:52 ` Tejun Heo
2015-11-24 16:52 ` Tejun Heo
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-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-8-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 17:16 ` Tejun Heo
2015-11-24 17:16 ` Tejun Heo
2015-11-24 17:16 ` Tejun Heo
2015-11-25 6:01 ` Serge E. Hallyn
[not found] ` <20151125060156.GA678-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-25 19:10 ` Tejun Heo
2015-11-25 19:10 ` Tejun Heo
[not found] ` <20151125191041.GB14240-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2015-11-25 19:55 ` Serge Hallyn
2015-11-25 19:55 ` Serge Hallyn
2015-11-25 19:57 ` Tejun Heo
2015-11-25 19:57 ` Tejun Heo
2015-11-25 19:57 ` Tejun Heo
2015-11-25 19:55 ` Serge Hallyn
2015-11-25 19:10 ` Tejun Heo
[not found] ` <20151124171610.GS17033-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-25 6:01 ` Serge E. Hallyn
2015-11-27 5:17 ` Serge E. Hallyn
2015-11-27 5:17 ` Serge E. Hallyn
[not found] ` <20151127051745.GA24521-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-30 15:09 ` Tejun Heo
2015-11-30 15:09 ` Tejun Heo
[not found] ` <20151130150938.GF3535-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-01 4:07 ` Serge E. Hallyn
2015-12-01 4:07 ` Serge E. Hallyn
[not found] ` <20151201040704.GA31067-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-12-01 16:46 ` Tejun Heo
2015-12-01 16:46 ` Tejun Heo
[not found] ` <20151201164649.GD12922-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-01 21:58 ` Serge E. Hallyn
2015-12-01 21:58 ` Serge E. Hallyn
2015-12-01 21:58 ` Serge E. Hallyn
[not found] ` <20151201215853.GA9153-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-12-02 16:53 ` Tejun Heo
2015-12-02 16:53 ` Tejun Heo
2015-12-02 16:53 ` Tejun Heo
[not found] ` <20151202165312.GB19878-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-02 16:56 ` Serge E. Hallyn
2015-12-02 16:56 ` Serge E. Hallyn
2015-12-02 16:56 ` Serge E. Hallyn
[not found] ` <20151202165637.GA20840-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-12-02 16:58 ` Tejun Heo
2015-12-02 16:58 ` Tejun Heo
2015-12-02 16:58 ` Tejun Heo
[not found] ` <20151202165839.GD19878-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-02 17:02 ` Serge E. Hallyn [this message]
2015-12-02 17:02 ` Serge E. Hallyn
[not found] ` <20151202170239.GA21009-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-12-02 17:05 ` Tejun Heo
2015-12-02 17:05 ` Tejun Heo
[not found] ` <20151202170551.GE19878-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-03 22:47 ` Serge E. Hallyn
2015-12-03 22:47 ` Serge E. Hallyn
2015-12-03 22:47 ` Serge E. Hallyn
[not found] ` <20151203224706.GA19971-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-12-07 15:39 ` Tejun Heo
2015-12-07 15:39 ` Tejun Heo
[not found] ` <20151207153911.GF9175-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-12-07 15:53 ` Serge Hallyn
2015-12-07 15:53 ` Serge Hallyn
2015-12-07 15:39 ` Tejun Heo
2015-12-02 17:02 ` Serge E. Hallyn
2015-12-01 16:46 ` Tejun Heo
2015-12-01 4:07 ` Serge E. Hallyn
2015-11-30 15:09 ` Tejun Heo
2015-11-27 5:17 ` Serge E. Hallyn
2015-11-16 19:51 ` [PATCH 8/8] cgroup: Add documentation for cgroup namespaces serge-A9i7LUbDfNHQT0dZR+AlfA
2015-11-16 19:51 ` serge
[not found] ` <1447703505-29672-9-git-send-email-serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
2015-11-24 17:16 ` Tejun Heo
2015-11-24 17:16 ` Tejun Heo
2015-11-24 17:16 ` Tejun Heo
2015-11-16 20:41 ` CGroup Namespaces (v4) Richard Weinberger
2015-11-16 20:41 ` Richard Weinberger
[not found] ` <CAFLxGvzVmbZHrpaTmXUAK03hsnVPwEs3SJGNFNXfthh3NL8EDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-16 20:46 ` Serge E. Hallyn
2015-11-16 20:46 ` Serge E. Hallyn
2015-11-16 20:46 ` Serge E. Hallyn
[not found] ` <20151116204606.GA30681-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-16 20:50 ` Richard Weinberger
2015-11-16 20:50 ` Richard Weinberger
2015-11-16 20:50 ` Richard Weinberger
[not found] ` <564A41AF.4040208-/L3Ra7n9ekc@public.gmane.org>
2015-11-16 20:54 ` Serge E. Hallyn
2015-11-16 20:54 ` Serge E. Hallyn
2015-11-16 20:54 ` Serge E. Hallyn
[not found] ` <20151116205452.GA30975-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-16 22:24 ` Eric W. Biederman
2015-11-16 22:24 ` Eric W. Biederman
[not found] ` <87y4dxh9b8.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-11-16 22:37 ` Tejun Heo
2015-11-16 22:37 ` Tejun Heo
2015-11-16 22:37 ` Tejun Heo
2015-11-17 1:13 ` Serge E. Hallyn
2015-11-17 1:13 ` Serge E. Hallyn
2015-11-17 1:13 ` Serge E. Hallyn
[not found] ` <20151117011349.GA1958-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-17 1:40 ` Serge E. Hallyn
2015-11-17 1:40 ` Serge E. Hallyn
2015-11-17 1:40 ` Serge E. Hallyn
[not found] ` <20151117014026.GA2331-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-17 3:54 ` Serge E. Hallyn
2015-11-17 3:54 ` Serge E. Hallyn
2015-11-17 3:54 ` Serge E. Hallyn
2015-11-18 2:30 ` Serge E. Hallyn
2015-11-18 2:30 ` Serge E. Hallyn
[not found] ` <20151118023022.GA17501-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-11-18 9:18 ` Eric W. Biederman
2015-11-18 9:18 ` Eric W. Biederman
[not found] ` <87r3jnfyx7.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-11-18 15:43 ` Serge E. Hallyn
2015-11-18 15:43 ` Serge E. Hallyn
2015-11-16 22:24 ` Eric W. Biederman
2015-11-16 20:41 ` Richard Weinberger
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