From patchwork Wed Dec 14 09:19:18 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Kinsbursky X-Patchwork-Id: 131321 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 119571007D5 for ; Wed, 14 Dec 2011 19:20:08 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755004Ab1LNITs (ORCPT ); Wed, 14 Dec 2011 03:19:48 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:14532 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754578Ab1LNITl (ORCPT ); Wed, 14 Dec 2011 03:19:41 -0500 Received: from localhost6.localdomain6 ([10.30.20.35]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id pBE8JIYa001390; Wed, 14 Dec 2011 11:19:19 +0300 (MSK) Subject: [PATCH] SUNRPC: make SUNPRC clients list per network namespace context To: Trond.Myklebust@netapp.com From: Stanislav Kinsbursky Cc: linux-nfs@vger.kernel.org, xemul@parallels.com, neilb@suse.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, jbottomley@parallels.com, bfields@fieldses.org, davem@davemloft.net, devel@openvz.org Date: Wed, 14 Dec 2011 12:19:18 +0300 Message-ID: <20111214081918.2804.59143.stgit@localhost6.localdomain6> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch moves static SUNRPC clients list and it's lock to sunrpc_net structure. Currently this list is used only for debug purposes. But later it will be used also for selecting clients by networks namespace on PipeFS mount/umount events. Per-network namespace lists will make this faster and simplier. Note: client list is taken from "init_net" network namespace context in rpc_show_tasks(). This will be changed with making SUNRPC sysctl's per network namespace context. Signed-off-by: Stanislav Kinsbursky --- include/linux/sunrpc/sched.h | 3 ++- net/sunrpc/clnt.c | 26 +++++++++++++++----------- net/sunrpc/netns.h | 3 +++ net/sunrpc/sunrpc_syms.c | 3 +++ net/sunrpc/sysctl.c | 4 +++- 5 files changed, 26 insertions(+), 13 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index e775689..b16243a 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -244,7 +244,8 @@ int rpciod_up(void); void rpciod_down(void); int __rpc_wait_for_completion_task(struct rpc_task *task, int (*)(void *)); #ifdef RPC_DEBUG -void rpc_show_tasks(void); +struct net; +void rpc_show_tasks(struct net *); #endif int rpc_init_mempool(void); void rpc_destroy_mempool(void); diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index f0268ea..c5f04aa 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -38,6 +38,7 @@ #include #include "sunrpc.h" +#include "netns.h" #ifdef RPC_DEBUG # define RPCDBG_FACILITY RPCDBG_CALL @@ -50,8 +51,6 @@ /* * All RPC clients are linked into this list */ -static LIST_HEAD(all_clients); -static DEFINE_SPINLOCK(rpc_client_lock); static DECLARE_WAIT_QUEUE_HEAD(destroy_wait); @@ -81,16 +80,20 @@ static int rpc_ping(struct rpc_clnt *clnt); static void rpc_register_client(struct rpc_clnt *clnt) { - spin_lock(&rpc_client_lock); - list_add(&clnt->cl_clients, &all_clients); - spin_unlock(&rpc_client_lock); + struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + + spin_lock(&sn->rpc_client_lock); + list_add(&clnt->cl_clients, &sn->all_clients); + spin_unlock(&sn->rpc_client_lock); } static void rpc_unregister_client(struct rpc_clnt *clnt) { - spin_lock(&rpc_client_lock); + struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + + spin_lock(&sn->rpc_client_lock); list_del(&clnt->cl_clients); - spin_unlock(&rpc_client_lock); + spin_unlock(&sn->rpc_client_lock); } static int @@ -1852,14 +1855,15 @@ static void rpc_show_task(const struct rpc_clnt *clnt, task->tk_action, rpc_waitq); } -void rpc_show_tasks(void) +void rpc_show_tasks(struct net *net) { struct rpc_clnt *clnt; struct rpc_task *task; int header = 0; + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - spin_lock(&rpc_client_lock); - list_for_each_entry(clnt, &all_clients, cl_clients) { + spin_lock(&sn->rpc_client_lock); + list_for_each_entry(clnt, &sn->all_clients, cl_clients) { spin_lock(&clnt->cl_lock); list_for_each_entry(task, &clnt->cl_tasks, tk_task) { if (!header) { @@ -1870,6 +1874,6 @@ void rpc_show_tasks(void) } spin_unlock(&clnt->cl_lock); } - spin_unlock(&rpc_client_lock); + spin_unlock(&sn->rpc_client_lock); } #endif diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h index d013bf2..6010c46 100644 --- a/net/sunrpc/netns.h +++ b/net/sunrpc/netns.h @@ -9,6 +9,9 @@ struct cache_detail; struct sunrpc_net { struct proc_dir_entry *proc_net_rpc; struct cache_detail *ip_map_cache; + + struct list_head all_clients; + spinlock_t rpc_client_lock; }; extern int sunrpc_net_id; diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c index 8ec9778..e57aa10 100644 --- a/net/sunrpc/sunrpc_syms.c +++ b/net/sunrpc/sunrpc_syms.c @@ -29,6 +29,7 @@ int sunrpc_net_id; static __net_init int sunrpc_init_net(struct net *net) { int err; + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); err = rpc_proc_init(net); if (err) @@ -38,6 +39,8 @@ static __net_init int sunrpc_init_net(struct net *net) if (err) goto err_ipmap; + INIT_LIST_HEAD(&sn->all_clients); + spin_lock_init(&sn->rpc_client_lock); return 0; err_ipmap: diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c index e65dcc6..af7d339 100644 --- a/net/sunrpc/sysctl.c +++ b/net/sunrpc/sysctl.c @@ -20,6 +20,8 @@ #include #include +#include "netns.h" + /* * Declare the debug flags here */ @@ -110,7 +112,7 @@ proc_dodebug(ctl_table *table, int write, *(unsigned int *) table->data = value; /* Display the RPC tasks on writing to rpc_debug */ if (strcmp(table->procname, "rpc_debug") == 0) - rpc_show_tasks(); + rpc_show_tasks(&init_net); } else { if (!access_ok(VERIFY_WRITE, buffer, left)) return -EFAULT;