[PATCH] utsns: Restore proper namespace handling.

[Serge E. Hallyn]

Quoting Eric W. Biederman (ebiederm at xmission.com):
> 
> When CONFIG_UTS_NS was removed it seems that we also deleted
> the code for handling sysctls in the other then the initial
> uts namespace.   This patch restores that code.
> 
> Signed-off-by: Eric W. Biederman <ebiederm at xmission.com>

Thanks, Eric.

Acked-by: Serge Hallyn <serue at us.ibm.com>

> ---
>  kernel/utsname_sysctl.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
> index c76c064..71f58c3 100644
> --- a/kernel/utsname_sysctl.c
> +++ b/kernel/utsname_sysctl.c
> @@ -18,6 +18,8 @@
>  static void *get_uts(ctl_table *table, int write)
>  {
>  	char *which = table->data;
> +	struct uts_namespace *uts_ns = current->nsproxy->uts_ns;
> +	which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
> 
>  	if (!write)
>  		down_read(&uts_sem);
> -- 
> 1.5.3.rc6.17.g1911
> 
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