NFS: Cleanup - add nfs_clients_exit to mirror nfs_clients_init

Add a helper to clean up the struct nfs_net when it is being destroyed.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index d7e4f0848e28..0acb104f7b00 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -192,7 +192,7 @@ error_0:
 EXPORT_SYMBOL_GPL(nfs_alloc_client);
 
 #if IS_ENABLED(CONFIG_NFS_V4)
-void nfs_cleanup_cb_ident_idr(struct net *net)
+static void nfs_cleanup_cb_ident_idr(struct net *net)
 {
         struct nfs_net *nn = net_generic(net, nfs_net_id);
 
@@ -214,7 +214,7 @@ static void pnfs_init_server(struct nfs_server *server)
 }
 
 #else
-void nfs_cleanup_cb_ident_idr(struct net *net)
+static void nfs_cleanup_cb_ident_idr(struct net *net)
 {
 }
 
@@ -1074,6 +1074,15 @@ void nfs_clients_init(struct net *net)
         nn->boot_time = ktime_get_real();
 }
 
+void nfs_clients_exit(struct net *net)
+{
+        struct nfs_net *nn = net_generic(net, nfs_net_id);
+
+        nfs_cleanup_cb_ident_idr(net);
+        WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));
+        WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));
+}
+
 #ifdef CONFIG_PROC_FS
 static void *nfs_server_list_start(struct seq_file *p, loff_t *pos);
 static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos);