From: ebiederm@xmission.com (Eric W. Biederman)
To: David Howells <dhowells@redhat.com>
Cc: trondmy@primarydata.com, mszeredi@redhat.com,
linux-nfs@vger.kernel.org, jlayton@redhat.com,
linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk,
linux-fsdevel@vger.kernel.org, cgroups@vger.kernel.org
Subject: Re: [RFC][PATCH 0/9] Make containers kernel objects
Date: Tue, 23 May 2017 10:33:01 -0500 [thread overview]
Message-ID: <87mva3k2qa.fsf@xmission.com> (raw)
In-Reply-To: <149547014649.10599.12025037906646164347.stgit@warthog.procyon.org.uk> (David Howells's message of "Mon, 22 May 2017 17:22:26 +0100")
David Howells <dhowells@redhat.com> writes:
> Here are a set of patches to define a container object for the kernel and
> to provide some methods to create and manipulate them.
Just so this discussion has some clarity.
Nacked-by: "Eric W. Biederman" <ebiederm@xmission.com>
As a user visible entity I see nothing this container data structure
helps solve it only muddies the waters and makes things more brittle.
Embracing the complexity of namespaces head on tends to mean all of the
goofy scary semantic corner cases are visible from the first version of
the design, and so developers can't take short cuts that result in
buggy kernel code that persists for decades. I am rather tired of
finding and fixing those.
Eric
WARNING: multiple messages have this Message-ID (diff)
From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
To: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: trondmy-7I+n7zu2hftEKMMhf/gKZA@public.gmane.org,
mszeredi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [RFC][PATCH 0/9] Make containers kernel objects
Date: Tue, 23 May 2017 10:33:01 -0500 [thread overview]
Message-ID: <87mva3k2qa.fsf@xmission.com> (raw)
In-Reply-To: <149547014649.10599.12025037906646164347.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> (David Howells's message of "Mon, 22 May 2017 17:22:26 +0100")
David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> writes:
> Here are a set of patches to define a container object for the kernel and
> to provide some methods to create and manipulate them.
Just so this discussion has some clarity.
Nacked-by: "Eric W. Biederman" <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
As a user visible entity I see nothing this container data structure
helps solve it only muddies the waters and makes things more brittle.
Embracing the complexity of namespaces head on tends to mean all of the
goofy scary semantic corner cases are visible from the first version of
the design, and so developers can't take short cuts that result in
buggy kernel code that persists for decades. I am rather tired of
finding and fixing those.
Eric
next prev parent reply other threads:[~2017-05-23 15:39 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-22 16:22 [RFC][PATCH 0/9] Make containers kernel objects David Howells
2017-05-22 16:22 ` David Howells
2017-05-22 16:22 ` [PATCH 1/9] containers: Rename linux/container.h to linux/container_dev.h David Howells
2017-05-22 16:22 ` [PATCH 2/9] Implement containers as kernel objects David Howells
2017-08-14 5:47 ` Richard Guy Briggs
2017-08-14 5:47 ` Richard Guy Briggs
[not found] ` <20170814054711.GB29957-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2017-08-16 22:21 ` Paul Moore
2017-08-16 22:21 ` Paul Moore
2017-08-16 22:21 ` Paul Moore
2017-08-16 22:21 ` Paul Moore
[not found] ` <CAHC9VhRgPRa7KeMt8G700aeFvqVYc0gMx__82K31TYY6oQQqTw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-18 8:03 ` Richard Guy Briggs
2017-08-18 8:03 ` Richard Guy Briggs
2017-08-18 8:03 ` Richard Guy Briggs
2017-09-06 14:03 ` Serge E. Hallyn
2017-09-06 14:03 ` Serge E. Hallyn
[not found] ` <20170906140341.GA8729-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-09-14 5:47 ` Richard Guy Briggs
2017-09-14 5:47 ` Richard Guy Briggs
2017-09-14 5:47 ` Richard Guy Briggs
[not found] ` <20170818080300.GQ7187-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2017-09-06 14:03 ` Serge E. Hallyn
2017-09-08 20:02 ` Paul Moore
2017-09-08 20:02 ` Paul Moore
[not found] ` <149547016213.10599.1969443294414531853.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-08-14 5:47 ` Richard Guy Briggs
2017-05-22 16:22 ` [PATCH 3/9] Provide /proc/containers David Howells
2017-05-22 16:22 ` David Howells
2017-05-22 16:22 ` [PATCH 4/9] Allow processes to be forked and upcalled into a container David Howells
2017-05-22 16:22 ` David Howells
2017-05-22 16:23 ` [PATCH 5/9] Open a socket inside " David Howells
2017-05-22 16:23 ` [PATCH 6/9] Allow fs syscall dfd arguments to take a container fd David Howells
2017-05-22 16:23 ` [PATCH 7/9] Make fsopen() able to initiate mounting into a container David Howells
2017-05-22 16:23 ` [PATCH 8/9] Honour CONTAINER_NEW_EMPTY_FS_NS David Howells
2017-05-22 16:23 ` David Howells
2017-05-22 16:23 ` [PATCH 9/9] Sample program for driving container objects David Howells
[not found] ` <149547014649.10599.12025037906646164347.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-22 16:53 ` [RFC][PATCH 0/9] Make containers kernel objects James Bottomley
2017-05-22 16:53 ` James Bottomley
2017-05-22 17:14 ` Aleksa Sarai
2017-05-22 17:14 ` Aleksa Sarai
2017-05-22 17:27 ` Jessica Frazelle
2017-05-22 17:27 ` Jessica Frazelle
2017-05-22 18:34 ` Jeff Layton
2017-05-22 18:34 ` Jeff Layton
[not found] ` <1495478092.2816.17.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-05-22 19:21 ` James Bottomley
2017-05-22 19:21 ` James Bottomley
2017-05-22 19:21 ` James Bottomley
2017-05-22 22:14 ` Jeff Layton
[not found] ` <1495480860.9050.18.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-05-22 22:14 ` Jeff Layton
2017-05-23 10:35 ` Ian Kent
2017-05-23 10:35 ` Ian Kent
2017-05-23 10:35 ` Ian Kent
2017-05-23 9:38 ` Ian Kent
2017-05-23 9:38 ` Ian Kent
2017-05-23 9:38 ` Ian Kent
[not found] ` <1495472039.2757.19.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-05-22 17:14 ` Aleksa Sarai
2017-05-22 17:27 ` Jessica Frazelle
2017-05-22 18:34 ` Jeff Layton
2017-05-23 9:38 ` Ian Kent
2017-05-23 13:52 ` David Howells
[not found] ` <f167feeb-e653-12e3-eec8-24162f7f7c07-l3A5Bk7waGM@public.gmane.org>
2017-05-23 14:53 ` David Howells
2017-05-23 14:53 ` David Howells
2017-05-23 14:56 ` Eric W. Biederman
2017-05-23 14:56 ` Eric W. Biederman
[not found] ` <2446.1495551216-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-23 14:56 ` Eric W. Biederman
2017-05-23 15:14 ` David Howells
2017-05-23 15:14 ` David Howells
[not found] ` <2961.1495552481-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-23 15:17 ` Eric W. Biederman
2017-05-23 15:17 ` Eric W. Biederman
[not found] ` <87bmqjmwl5.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-05-23 15:44 ` James Bottomley
2017-05-23 15:44 ` James Bottomley
2017-05-23 15:44 ` James Bottomley
[not found] ` <1495554267.27369.9.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-05-23 16:36 ` David Howells
2017-05-23 16:36 ` David Howells
[not found] ` <3860.1495557363-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-24 8:26 ` Eric W. Biederman
2017-05-24 8:26 ` Eric W. Biederman
2017-05-24 9:16 ` Ian Kent
2017-05-24 9:16 ` Ian Kent
[not found] ` <87k256ek3e.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-05-24 9:16 ` Ian Kent
[not found] ` <87zie3mxkc.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-05-23 15:14 ` David Howells
2017-05-22 17:11 ` Jessica Frazelle
2017-05-22 17:11 ` Jessica Frazelle
2017-05-22 19:04 ` Eric W. Biederman
2017-05-22 19:04 ` Eric W. Biederman
2017-05-22 22:22 ` Jeff Layton
2017-05-22 22:22 ` Jeff Layton
2017-05-23 12:54 ` Eric W. Biederman
2017-05-23 12:54 ` Eric W. Biederman
2017-05-23 14:27 ` Jeff Layton
2017-05-23 14:27 ` Jeff Layton
2017-05-23 14:30 ` Djalal Harouni
2017-05-23 14:30 ` Djalal Harouni
2017-05-23 14:54 ` Colin Walters
2017-05-23 14:54 ` Colin Walters
2017-05-23 15:31 ` Jeff Layton
2017-05-23 15:31 ` Jeff Layton
2017-05-23 15:35 ` Colin Walters
2017-05-23 15:35 ` Colin Walters
2017-05-23 15:30 ` David Howells
2017-05-23 14:23 ` Djalal Harouni
2017-05-23 14:23 ` Djalal Harouni
2017-05-27 17:45 ` Trond Myklebust
2017-05-27 17:45 ` Trond Myklebust
2017-05-27 19:10 ` James Bottomley
2017-05-27 19:10 ` James Bottomley
2017-05-30 1:03 ` Ian Kent
2017-05-30 1:03 ` Ian Kent
2017-05-23 10:09 ` Ian Kent
2017-05-23 10:09 ` Ian Kent
2017-05-23 13:52 ` David Howells
2017-05-23 13:52 ` David Howells
2017-05-23 15:02 ` James Bottomley
2017-05-23 15:02 ` James Bottomley
[not found] ` <32556.1495547529-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-23 15:02 ` James Bottomley
2017-05-23 15:23 ` Eric W. Biederman
2017-05-23 15:23 ` Eric W. Biederman
2017-05-23 15:12 ` David Howells
2017-05-23 15:12 ` David Howells
2017-05-23 15:33 ` Eric W. Biederman [this message]
2017-05-23 15:33 ` Eric W. Biederman
2017-05-23 16:13 ` David Howells
2017-05-23 16:13 ` David Howells
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