[Devel] [PATCH v3 15/16] sunrpc: remove global init_rpc_pipefs

[Kirill A. Shutemov]

Replace remaining init_rpc_pipefs references with get_rpc_pipefs(NULL)
and make init_rpc_pipefs static.

Signed-off-by: Kirill A. Shutemov <kas at openvz.org>
---
 fs/nfsd/nfs4callback.c             |    5 ++++-
 fs/nfsd/nfssvc.c                   |   16 ++++++++++++++--
 include/linux/sunrpc/rpc_pipe_fs.h |    2 --
 net/sunrpc/rpc_pipe.c              |    1 -
 4 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 9bec643..61210b6 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -647,7 +647,6 @@ int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
 		.version	= 0,
 		.authflavor	= clp->cl_flavor,
 		.flags		= (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
-		.rpcmount	= init_rpc_pipefs,
 	};
 	struct rpc_clnt *client;
 
@@ -663,8 +662,12 @@ int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
 		args.prognumber = clp->cl_cb_session->se_cb_prog;
 		args.protocol = XPRT_TRANSPORT_BC_TCP;
 	}
+	args.rpcmount = get_rpc_pipefs(NULL);
+	if (IS_ERR(args.rpcmount))
+		return PTR_ERR(args.rpcmount);
 	/* Create RPC client */
 	client = rpc_create(&args);
+	mntput(args.rpcmount);
 	if (IS_ERR(client)) {
 		dprintk("NFSD: couldn't create callback client: %ld\n",
 			PTR_ERR(client));
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 17d78d3..7353420 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -206,6 +206,7 @@ static bool nfsd_up = false;
 static int nfsd_startup(unsigned short port, int nrservs)
 {
 	int ret;
+	struct vfsmount *rpcmount;
 
 	if (nfsd_up)
 		return 0;
@@ -220,7 +221,13 @@ static int nfsd_startup(unsigned short port, int nrservs)
 	ret = nfsd_init_socks(port);
 	if (ret)
 		goto out_racache;
-	ret = lockd_up(init_rpc_pipefs);
+	rpcmount = get_rpc_pipefs(NULL);
+	if (IS_ERR(rpcmount)) {
+		ret = PTR_ERR(rpcmount);
+		goto out_racache;
+	}
+	ret = lockd_up(rpcmount);
+	mntput(rpcmount);
 	if (ret)
 		goto out_racache;
 	ret = nfs4_state_start();
@@ -308,6 +315,7 @@ static void set_max_drc(void)
 int nfsd_create_serv(void)
 {
 	int err = 0;
+	struct vfsmount *rpcmount;
 
 	WARN_ON(!mutex_is_locked(&nfsd_mutex));
 	if (nfsd_serv) {
@@ -332,9 +340,13 @@ int nfsd_create_serv(void)
 	}
 	nfsd_reset_versions();
 
-	nfsd_serv = svc_create_pooled(&nfsd_program, init_rpc_pipefs,
+	rpcmount = get_rpc_pipefs(NULL);
+	if (IS_ERR(rpcmount))
+		return PTR_ERR(rpcmount);
+	nfsd_serv = svc_create_pooled(&nfsd_program, rpcmount,
 				      nfsd_max_blksize, nfsd_last_thread, nfsd,
 				      THIS_MODULE);
+	mntput(rpcmount);
 	if (nfsd_serv == NULL)
 		return -ENOMEM;
 
diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h
index 4a8830a..a0b9c46 100644
--- a/include/linux/sunrpc/rpc_pipe_fs.h
+++ b/include/linux/sunrpc/rpc_pipe_fs.h
@@ -44,8 +44,6 @@ RPC_I(struct inode *inode)
 	return container_of(inode, struct rpc_inode, vfs_inode);
 }
 
-extern struct vfsmount *init_rpc_pipefs;
-
 extern struct vfsmount *get_rpc_pipefs(const char *path);
 extern int rpc_pipefs_add_destroy_cb(struct super_block *sb,
 		void (*destroy_cb)(void *data), void *data);
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 02416f1..96973c0 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -33,7 +33,6 @@
 #include <linux/sunrpc/cache.h>
 
 struct vfsmount *init_rpc_pipefs __read_mostly;
-EXPORT_SYMBOL_GPL(init_rpc_pipefs);
 
 static struct file_system_type rpc_pipe_fs_type;
 
-- 
1.7.3.4

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