netdev - [PATCH v3 07/21] nfs4blocklayout: exit

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Message-ID: <87a33322-18a9-a451-e69a-505eddb99333@virtuozzo.com>
Date:   Mon, 6 Nov 2017 16:24:14 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     netdev@...r.kernel.org
Cc:     "J. Bruce Fields" <bfields@...ldses.org>,
        Jeff Layton <jlayton@...chiereds.net>,
        linux-nfs@...r.kernel.org,
        Trond Myklebust <trond.myklebust@...marydata.com>,
        Anna Schumaker <anna.schumaker@...app.com>
Subject: [PATCH v3 07/21] nfs4blocklayout: exit_net cleanup check added

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

Signed-off-by: Vasily Averin <vvs@...tuozzo.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