nfs client: exit_net cleanup check added

Be sure that nfs_client_list and nfs_volume_list lists initialized
in net_init hook were return to initial state in net_exit hook.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 52a60e399a2d..e5fcc1f095ae 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -2084,8 +2084,12 @@ static int nfs_net_init(struct net *net)
 
 static void nfs_net_exit(struct net *net)
 {
+        struct nfs_net *nn = net_generic(net, nfs_net_id);
+
         nfs_fs_proc_net_exit(net);
         nfs_cleanup_cb_ident_idr(net);
+        WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));
+        WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));
 }
 
 static struct pernet_operations nfs_net_ops = {