[PATCH v3 07/21] nfs4blocklayout: exit_net cleanup check added

[Vasily Averin]

Be sure that bl_wq wait queue initialized in net_init hook
is not used anymore.

Signed-off-by: Vasily Averin <v...@virtuozzo.com>
---
 fs/nfs/blocklayout/rpc_pipefs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/nfs/blocklayout/rpc_pipefs.c b/fs/nfs/blocklayout/rpc_pipefs.c
index 9fb067a6..8c3941b 100644
--- a/fs/nfs/blocklayout/rpc_pipefs.c
+++ b/fs/nfs/blocklayout/rpc_pipefs.c
@@ -256,6 +256,9 @@ static void nfs4blocklayout_net_exit(struct net *net)
        nfs4blocklayout_unregister_net(net, nn->bl_device_pipe);
        rpc_destroy_pipe_data(nn->bl_device_pipe);
        nn->bl_device_pipe = NULL;
+       WARN_ONCE(!list_empty(&nn->bl_wq.head),
+                 "net %x %s: bl_wq head is not empty\n",
+                 net->ns.inum, __func__);
 }
 
 static struct pernet_operations nfs4blocklayout_net_ops = {
-- 
2.7.4