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From: Oleg Nesterov <oleg@redhat.com>
To: Daniel Lezcano <daniel.lezcano@free.fr>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
	akpm@linux-foundation.org, ebiederm@xmission.com,
	containers@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, clg@fr.ibm.com
Subject: Re: [PATCH 4/4] pidns: Use task_active_pid_ns where appropriate
Date: Mon, 31 Jan 2011 16:36:53 +0100	[thread overview]
Message-ID: <20110131153653.GA32392@redhat.com> (raw)
In-Reply-To: <4D46CB9E.1090802@free.fr>

On 01/31, Daniel Lezcano wrote:
>
> On 01/31/2011 12:26 PM, Alexey Dobriyan wrote:
>>
>> This task_active_pid_ns() is misnamed(?) because it does matter only
>> for dead tasks?
>
> Actually this function is later used, for the unshare, to get the pid_ns
> of a specific task, not the current one.

Well, it is already used to get the pid_ns of !current task.

> http://kerneltrap.org/mailarchive/linux-kernel/2010/6/20/4585095

The actual need for this change is that you are going to complicate
the things so that current->proxy->pid_ns != task_active_pid_ns().
This makes me cry ;)

Please don't forget, this patch is buggy, iirc...

Oleg.


  reply	other threads:[~2011-01-31 15:44 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-31 10:25 Prepare for the unshare support of the pid namespace Daniel Lezcano
2011-01-31 10:25 ` [PATCH 1/4] pid: Remove the child_reaper special case in init/main.c Daniel Lezcano
2011-01-31 10:25 ` [PATCH 2/4] pidns: Call pid_ns_prepare_proc from create_pid_namespace Daniel Lezcano
2011-01-31 13:22   ` Oleg Nesterov
2011-01-31 13:33     ` Daniel Lezcano
2011-01-31 14:02       ` Oleg Nesterov
2011-01-31 14:21         ` Daniel Lezcano
2011-01-31 10:25 ` [PATCH 3/4] procfs: kill the global proc_mnt variable Daniel Lezcano
2011-01-31 10:25 ` [PATCH 4/4] pidns: Use task_active_pid_ns where appropriate Daniel Lezcano
2011-01-31 11:26   ` Alexey Dobriyan
2011-01-31 14:47     ` Daniel Lezcano
2011-01-31 15:36       ` Oleg Nesterov [this message]
2011-02-01 10:07         ` Daniel Lezcano

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