netdev - [PATCH v3 02/21] lockd: added cleanup checks in exit

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Date:   Mon, 6 Nov 2017 16:23:24 +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" <linux-nfs@...r.kernel.org>
Subject: [PATCH v3 02/21] lockd: added cleanup checks in exit_net hook

Signed-off-by: Vasily Averin <vvs@...tuozzo.com>
---
 fs/lockd/svc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 809cbcc..2a48558 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -690,6 +690,17 @@ static int lockd_init_net(struct net *net)
 
 static void lockd_exit_net(struct net *net)
 {
+	struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+	WARN_ONCE(!list_empty(&ln->lockd_manager.list),
+		  "net %x %s: lockd_manager.list is not empty\n",
+		  net->ns.inum, __func__);
+	WARN_ONCE(!list_empty(&ln->nsm_handles),
+		  "net %x %s: nsm_handles list is not empty\n",
+		  net->ns.inum, __func__);
+	WARN_ONCE(delayed_work_pending(&ln->grace_period_end),
+		  "net %x %s: grace_period_end was not cancelled\n",
+		  net->ns.inum, __func__);
 }
 
 static struct pernet_operations lockd_net_ops = {
-- 
2.7.4