netdev - Re: [PATCH 1/1] IPVS: seq_release

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Date:	Sat, 14 May 2011 09:50:26 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Hans Schillstrom <hans.schillstrom@...csson.com>
Cc:	ja@....bg, lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, hans@...illstrom.com
Subject: Re: [PATCH 1/1] IPVS: seq_release_net should be used.

On Fri, May 13, 2011 at 08:03:20AM +0200, Hans Schillstrom wrote:
> Without this patch every access to ip_vs in procfs will increase
> the netns count i.e. an unbalanced get_net()/put_net().
> (ipvsadm commands also use procfs.)
> The result is you can't exit a netns if reading ip_vs_* procfs entries.

Hi Hans,

we should try and get this into 2.6.39, right?

> 
> Signed-off-by: Hans Schillstrom <hans.schillstrom@...csson.com>
> ---
>  net/netfilter/ipvs/ip_vs_app.c  |    2 +-
>  net/netfilter/ipvs/ip_vs_conn.c |    4 ++--
>  net/netfilter/ipvs/ip_vs_ctl.c  |    6 +++---
>  3 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/net/netfilter/ipvs/ip_vs_app.c b/net/netfilter/ipvs/ip_vs_app.c
> index 51f3af7..059af31 100644
> --- a/net/netfilter/ipvs/ip_vs_app.c
> +++ b/net/netfilter/ipvs/ip_vs_app.c
> @@ -572,7 +572,7 @@ static const struct file_operations ip_vs_app_fops = {
>  	.open	 = ip_vs_app_open,
>  	.read	 = seq_read,
>  	.llseek  = seq_lseek,
> -	.release = seq_release,
> +	.release = seq_release_net,
>  };
>  #endif
>  
> diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
> index d3fd91b..bf28ac2 100644
> --- a/net/netfilter/ipvs/ip_vs_conn.c
> +++ b/net/netfilter/ipvs/ip_vs_conn.c
> @@ -1046,7 +1046,7 @@ static const struct file_operations ip_vs_conn_fops = {
>  	.open    = ip_vs_conn_open,
>  	.read    = seq_read,
>  	.llseek  = seq_lseek,
> -	.release = seq_release,
> +	.release = seq_release_net,
>  };
>  
>  static const char *ip_vs_origin_name(unsigned flags)
> @@ -1114,7 +1114,7 @@ static const struct file_operations ip_vs_conn_sync_fops = {
>  	.open    = ip_vs_conn_sync_open,
>  	.read    = seq_read,
>  	.llseek  = seq_lseek,
> -	.release = seq_release,
> +	.release = seq_release_net,
>  };
>  
>  #endif
> diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
> index 89842f0..699c79a 100644
> --- a/net/netfilter/ipvs/ip_vs_ctl.c
> +++ b/net/netfilter/ipvs/ip_vs_ctl.c
> @@ -2066,7 +2066,7 @@ static const struct file_operations ip_vs_info_fops = {
>  	.open    = ip_vs_info_open,
>  	.read    = seq_read,
>  	.llseek  = seq_lseek,
> -	.release = seq_release_private,
> +	.release = seq_release_net,
>  };
>  
>  static int ip_vs_stats_show(struct seq_file *seq, void *v)
> @@ -2106,7 +2106,7 @@ static const struct file_operations ip_vs_stats_fops = {
>  	.open = ip_vs_stats_seq_open,
>  	.read = seq_read,
>  	.llseek = seq_lseek,
> -	.release = single_release,
> +	.release = single_release_net,
>  };
>  
>  static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v)
> @@ -2175,7 +2175,7 @@ static const struct file_operations ip_vs_stats_percpu_fops = {
>  	.open = ip_vs_stats_percpu_seq_open,
>  	.read = seq_read,
>  	.llseek = seq_lseek,
> -	.release = single_release,
> +	.release = single_release_net,
>  };
>  #endif
>  
> -- 
> 1.7.2.3
> 
> --
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