[PATCH RFC 2/9] lockd: add a helper to shut down rpc_clnt in nlm_host

[Jeff Layton <jlayton@kernel.org>]

NFS reaching into struct nlm_host is at least a minor layering
violation. Make an exported helper function and have nfs call that
instead.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/lockd/host.c             | 7 +++++++
 fs/nfs/sysfs.c              | 2 +-
 include/linux/lockd/lockd.h | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 5e6877c37f7303e7141fbb96bc278a207c8e5ddc..ed88c102eca0f999a9c5351467d823b806c30962 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -692,3 +692,10 @@ nlm_gc_hosts(struct net *net)
 		ln->next_gc = jiffies + NLM_HOST_COLLECT;
 	}
 }
+
+void
+nlm_host_shutdown_rpc(struct nlm_host *host)
+{
+	rpc_clnt_shutdown(host->h_rpcclnt);
+}
+EXPORT_SYMBOL_GPL(nlm_host_shutdown_rpc);
diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c
index c29c5fd639554461bdcd9ff612726194910d85b5..c0bfe6df53b51c0fcc541c33ab7590813114d7ec 100644
--- a/fs/nfs/sysfs.c
+++ b/fs/nfs/sysfs.c
@@ -254,7 +254,7 @@ shutdown_store(struct kobject *kobj, struct kobj_attribute *attr,
 		rpc_clnt_shutdown(server->client_acl);
 
 	if (server->nlm_host)
-		rpc_clnt_shutdown(server->nlm_host->h_rpcclnt);
+		nlm_host_shutdown_rpc(server->nlm_host);
 out:
 	return count;
 }
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index c8f0f9458f2cc035fd9161f8f2486ba76084abf1..6b8c912f443c3b4130f49b8170070d0b794abb94 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -248,6 +248,7 @@ void		  nlm_shutdown_hosts(void);
 void		  nlm_shutdown_hosts_net(struct net *net);
 void		  nlm_host_rebooted(const struct net *net,
 					const struct nlm_reboot *);
+void		  nlm_host_shutdown_rpc(struct nlm_host *host);
 
 /*
  * Host monitoring

-- 
2.48.1