From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Matt Helsley <matthltc@us.ibm.com>,
Linux Containers <containers@lists.linux-foundation.org>,
linux-nfs@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
Chuck Lever <chuck.lever@oracle.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Linux Containers <containers@lists.osdl.org>,
Cedric Le Goater <clg@fr.ibm.com>
Subject: Re: [RFC][PATCH 2/4] sunrpc: Use utsnamespaces
Date: Tue, 06 Jan 2009 17:42:12 -0500 [thread overview]
Message-ID: <1231281732.4173.6.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <20090106215831.GE18147@us.ibm.com>
On Tue, 2009-01-06 at 15:58 -0600, Serge E. Hallyn wrote:
> So should we use patch 2/4, plus (as someone - was it you? - suggested)
> using a DEFAULT instead of init_utsname()->nodename when
> current->utsname() == NULL?
No. I'm don't think that 2/4 is correct either. Basically, 2/4 is saying
that the container that first mounts the filesystem 'owns' it. However
at the same time we know that the lifetime of the filesystem is in no
way bounded by the lifetime of the container, and that's what gets you
into trouble with 'umount' in the first place.
IMO, the current code is the most correct approach, in that it assumes
that the filesystems are owned by the 'init' namespace.
Trond
next prev parent reply other threads:[~2009-01-06 22:42 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-06 1:13 [RFC][PATCH 0/4] utsns: RPC/NFS bug rework Matt Helsley
2009-01-06 1:13 ` [RFC][PATCH 1/4] Remove useless utsname.h includes Matt Helsley
2009-01-06 1:13 ` [RFC][PATCH 2/4] sunrpc: Use utsnamespaces Matt Helsley
2009-01-06 20:02 ` Serge E. Hallyn
2009-01-06 20:20 ` J. Bruce Fields
2009-01-06 21:53 ` Serge E. Hallyn
2009-01-06 23:35 ` Matt Helsley
2009-01-06 22:43 ` Matt Helsley
2009-01-06 20:44 ` Trond Myklebust
[not found] ` <1231274682.20316.65.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-06 21:58 ` Serge E. Hallyn
2009-01-06 22:42 ` Trond Myklebust [this message]
[not found] ` <1231281732.4173.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 0:08 ` Matt Helsley
2009-01-07 0:20 ` Trond Myklebust
[not found] ` <1231287619.11487.2.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 0:43 ` Matt Helsley
2009-01-07 1:10 ` Trond Myklebust
2009-01-07 0:20 ` J. Bruce Fields
2009-01-07 0:23 ` Trond Myklebust
[not found] ` <1231287791.11487.4.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 3:44 ` Matt Helsley
2009-01-06 23:04 ` Eric W. Biederman
[not found] ` <m1eizg11fy.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2009-01-06 23:15 ` Trond Myklebust
[not found] ` <1231283734.8041.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-06 23:32 ` J. Bruce Fields
2009-01-06 23:35 ` Trond Myklebust
[not found] ` <1231284943.8041.8.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-06 23:48 ` Matt Helsley
2009-01-06 23:51 ` Chuck Lever
2009-01-06 23:53 ` J. Bruce Fields
2009-01-07 0:07 ` Matt Helsley
2009-01-07 0:55 ` Eric W. Biederman
2009-01-07 0:20 ` Trond Myklebust
2009-01-07 0:20 ` Trond Myklebust
[not found] ` <1231287607.11487.0.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 0:26 ` J. Bruce Fields
2009-01-07 0:38 ` Trond Myklebust
[not found] ` <1231288706.11487.15.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 1:44 ` J. Bruce Fields
2009-01-07 1:50 ` Trond Myklebust
2009-01-07 2:37 ` Eric W. Biederman
2009-01-06 23:30 ` Matt Helsley
2009-01-06 23:18 ` Matt Helsley
2009-01-06 23:43 ` Trond Myklebust
[not found] ` <1231285417.8041.15.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-06 23:58 ` Matt Helsley
2009-01-06 22:29 ` Chuck Lever
2009-01-07 0:01 ` Serge E. Hallyn
2009-01-06 1:13 ` [RFC][PATCH 3/4] sunrpc: Improve UTS namespace workaround Matt Helsley
2009-01-06 16:02 ` Chuck Lever
2009-01-07 0:28 ` Matt Helsley
2009-01-07 3:02 ` Matt Helsley
2009-01-06 1:13 ` [RFC][PATCH 4/4] Represent RPC Callers Matt Helsley
2009-01-06 13:04 ` Trond Myklebust
[not found] ` <1231247062.7127.36.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-06 23:05 ` Matt Helsley
-- strict thread matches above, loose matches on Subject: below --
2009-01-07 0:39 [RFC][PATCH 2/4] sunrpc: Use utsnamespaces trond.myklebust
[not found] ` <ae2fa56f38f87da3a90ab6fe39954b2b.squirrel-2RFepEojUI3pn8CWWHJlTg@public.gmane.org>
2009-01-07 0:57 ` Matt Helsley
2009-01-07 1:02 ` Trond Myklebust
[not found] ` <1231290153.11487.34.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-01-07 1:22 ` Matt Helsley
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