[Devel] [PATCH rh7 0/4] Revive forgotten NETNS_REFCNT_DEBUG option

[Konstantin Khorenko]

Ok, it turned out that
* this code has been removed from mainstream, it's safely substituted by kmemleak
* not all code which appears to be under NETNS_REFCNT_DEBUG ifdef is from mainstream:
   net_access_allowed() function got there by chance during rebase pcs6 -> vz7

========================================================
Subject: net: Show all connections in init namespace
Date: Sat, 26 Nov 2011 14:17:32 +0400

Introduce a function that returns true when net namespaces are equal or
current current net namespace is init one and use it allover the socket
showing functions.

http://bugzilla.openvz.org/show_bug.cgi?id=2061
========================================================

So please move net_access_allowed() out of unused ifdef and check if netstat works fine on the Host,
i mean shows connections for all Containers.

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 11/24/2015 02:07 PM, Stanislav Kinsburskiy wrote:
> This explicit check on network namespace usage on free was forgottent for
> ages, or maybe it was never used.
> This patch set ressurects it.
> However:
> 1) There is no garantee, that corresponding code works as expected
> 2) This code was throwed away from upstream kernel in May 2015.
>
> ---
>
> Stanislav Kinsburskiy (4):
>        init/Kconfig: NETNS_REFCNT_DEBUG option added
>        net_namespace.h: set NETNS_REFCNT_DEBUG if CONFIG_NETNS_REFCNT_DEBUG
>        net_namespace: taint kernel on free, if users exist
>        configs: adjust to reflect CONFIG_NETNS_REFCNT_DEBUG option
>
>
>   configs/kernel-3.10.0-x86_64-debug.config |    1 +
>   configs/kernel-3.10.0-x86_64.config       |    1 +
>   include/net/net_namespace.h               |    3 +++
>   init/Kconfig                              |    7 +++++++
>   net/core/net_namespace.c                  |    1 +
>   5 files changed, 13 insertions(+)
>
> --
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