netdev - Re: [PATCH net-next nfs 1/6] net: Convert rpcsec_gss_net

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Date:   Fri, 23 Mar 2018 14:55:55 -0400
From:   Anna Schumaker <Anna.Schumaker@...app.com>
To:     Kirill Tkhai <ktkhai@...tuozzo.com>, <davem@...emloft.net>,
        <trond.myklebust@...marydata.com>, <bfields@...ldses.org>,
        <jlayton@...nel.org>, <dhowells@...hat.com>,
        <keescook@...omium.org>, <dwindsor@...il.com>,
        <ishkamiel@...il.com>, <elena.reshetova@...el.com>,
        <linux-nfs@...r.kernel.org>, <linux-afs@...ts.infradead.org>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next nfs 1/6] net: Convert rpcsec_gss_net_ops



On 03/13/2018 06:49 AM, Kirill Tkhai wrote:
> These pernet_operations initialize and destroy sunrpc_net_id
> refered per-net items. Only used global list is cache_list,
> and accesses already serialized.
> 
> sunrpc_destroy_cache_detail() check for list_empty() without
> cache_list_lock, but when it's called from unregister_pernet_subsys(),
> there can't be callers in parallel, so we won't miss list_empty()
> in this case.
> 
> Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>

It might make sense to take these and the other NFS patches through the net tree, since the pernet_operations don't yet have the async field in my tree (and I therefore can't compile once these are applied).

Acked-by: Anna Schumaker <Anna.Schumaker@...app.com>

> ---
>  net/sunrpc/auth_gss/auth_gss.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
> index 9463af4b32e8..44f939cb6bc8 100644
> --- a/net/sunrpc/auth_gss/auth_gss.c
> +++ b/net/sunrpc/auth_gss/auth_gss.c
> @@ -2063,6 +2063,7 @@ static __net_exit void rpcsec_gss_exit_net(struct net *net)
>  static struct pernet_operations rpcsec_gss_net_ops = {
>  	.init = rpcsec_gss_init_net,
>  	.exit = rpcsec_gss_exit_net,
> +	.async = true,
>  };
>  
>  /*
>