From: "Serge E. Hallyn" <serue@us.ibm.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>,
linux-kernel@vger.kernel.org, Kirill Korotaev <dev@sw.ru>,
herbert@13thfloor.at, devel@openvz.org, sam@vilain.net,
xemul@sw.ru, James Morris <jmorris@namei.org>
Subject: Re: [RFC][PATCH 0/5] uts namespaces: Introduction
Date: Fri, 7 Apr 2006 14:28:00 -0500 [thread overview]
Message-ID: <20060407192800.GE28729@sergelap.austin.ibm.com> (raw)
In-Reply-To: <m1wte1mcim.fsf@ebiederm.dsl.xmission.com>
Quoting Eric W. Biederman (ebiederm@xmission.com):
> "Serge E. Hallyn" <serue@us.ibm.com> writes:
>
> > Introduce utsname namespaces. Instead of a single system_utsname
> > containing hostname domainname etc, a process can request it's
> > copy of the uts info to be cloned. The data will be copied from
> > it's original, but any further changes will not be seen by processes
> > which are not it's children, and vice versa.
> >
> > This is useful, for instance, for vserver/openvz, which can now clone
> > a new uts namespace for each new virtual server.
> >
> > This patchset is based on Kirill Korotaev's Mar 24 submission, taking
> > comments (in particular from James Morris and Eric Biederman) into
> > account.
> >
> > Some performance results are attached. I was mainly curious whether
> > it would be worth putting the task_struct->uts_ns pointer inside
> > a #ifdef CONFIG_UTS_NS. The result show that leaving it in when
> > CONFIG_UTS_NS=n has negligable performance impact, so that is the
> > approach this patch takes.
>
> Ok. This looks like the best version so far.
>
> I like the utsname() function thing to shorten the
> idiom of current->uts_ns->name.
>
> We probably want to introduce utsname() and an init_utsname()
> before any of the other changes, and then perform the substitutions,
This is the same as what Sam is saying, right? Just making sure I
understand.
> before we actually change the code so the patchset can make it
> through a git-bisect. This will also allows for something
Ok, I've finally got the rest of git doing my bidding, I'll go read
up on git-bisect.
thanks for the comments,
-serge
next prev parent reply other threads:[~2006-04-07 19:28 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-07 18:36 [RFC][PATCH 0/5] uts namespaces: Introduction Serge E. Hallyn
2006-04-07 18:36 ` [RFC][PATCH 5/5] uts namespaces: Enable UTS namespaces debugging Serge E. Hallyn
2006-04-07 18:36 ` [RFC][PATCH 2/5] uts namespaces: Switch to using uts namespaces Serge E. Hallyn
2006-04-07 19:17 ` Sam Ravnborg
2006-04-07 19:25 ` Serge E. Hallyn
2006-04-11 12:26 ` Kirill Korotaev
2006-04-11 21:04 ` Sam Vilain
2006-04-12 5:01 ` Serge E. Hallyn
2006-04-12 6:00 ` Eric W. Biederman
2006-04-19 15:00 ` Serge E. Hallyn
2006-04-07 18:36 ` [RFC][PATCH 3/5] uts namespaces: Use init uts_namespace when appropriate Serge E. Hallyn
2006-04-07 18:36 ` [RFC][PATCH 4/5] utsname namespaces: sysctl hack Serge E. Hallyn
2006-04-19 15:17 ` Kirill Korotaev
2006-04-19 15:21 ` Serge E. Hallyn
2006-04-19 15:50 ` Kirill Korotaev
2006-04-19 16:54 ` Cedric Le Goater
2006-04-19 17:10 ` Eric W. Biederman
2006-04-19 17:10 ` Serge E. Hallyn
2006-04-19 15:52 ` Eric W. Biederman
2006-04-19 16:23 ` Dave Hansen
2006-04-19 16:52 ` Eric W. Biederman
2006-04-19 17:19 ` Dave Hansen
2006-04-19 17:37 ` Eric W. Biederman
2006-04-19 17:48 ` Eric W. Biederman
2006-04-19 15:29 ` Eric W. Biederman
2006-04-19 17:51 ` Serge E. Hallyn
2006-04-19 18:27 ` Eric W. Biederman
2006-04-19 20:24 ` Serge E. Hallyn
2006-04-19 21:44 ` Sam Vilain
2006-04-20 17:05 ` Serge E. Hallyn
2006-04-25 22:00 ` Serge E. Hallyn
2006-04-26 4:09 ` Sam Vilain
2006-04-26 10:28 ` Christoph Hellwig
2006-04-27 12:32 ` Eric W. Biederman
2006-04-07 18:36 ` [RFC][PATCH 1/5] uts namespaces: Implement utsname namespaces Serge E. Hallyn
2006-04-07 19:13 ` Sam Ravnborg
2006-04-07 19:20 ` Serge E. Hallyn
2006-04-07 19:39 ` Serge E. Hallyn
2006-04-07 20:47 ` James Morris
2006-04-07 22:13 ` Serge E. Hallyn
2006-04-08 13:44 ` Andi Kleen
2006-04-08 13:45 ` Andi Kleen
2006-04-08 20:28 ` Serge E. Hallyn
2006-04-09 6:00 ` Andi Kleen
2006-04-09 19:08 ` Eric W. Biederman
2006-04-07 19:06 ` [RFC][PATCH 0/5] uts namespaces: Introduction Eric W. Biederman
2006-04-07 19:28 ` Serge E. Hallyn [this message]
2006-04-07 19:39 ` Eric W. Biederman
2006-04-11 12:32 ` Kirill Korotaev
2006-04-11 14:01 ` Serge E. Hallyn
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