nfs client: exit_net cleanup check added

vaverin · amschuma-ntap · commit b0b5352d9a50 · 2017-11-17T16:43:50.000-05:00
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 &lt;vvs@virtuozzo.com&gt;
Signed-off-by: Anna Schumaker &lt;Anna.Schumaker@Netapp.com&gt;
diff --git 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 = {

Original file line number	Diff line number	Diff line change
`@@ -2084,8 +2084,12 @@ static int nfs_net_init(struct net *net)`
`2084`	`2084`
`2085`	`2085`	`static void nfs_net_exit(struct net *net)`
`2086`	`2086`	`{`
	`2087`	`+ struct nfs_net *nn = net_generic(net, nfs_net_id);`
	`2088`	`+`
`2087`	`2089`	`nfs_fs_proc_net_exit(net);`
`2088`	`2090`	`nfs_cleanup_cb_ident_idr(net);`
	`2091`	`+ WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));`
	`2092`	`+ WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));`
`2089`	`2093`	`}`
`2090`	`2094`
`2091`	`2095`	`static struct pernet_operations nfs_net_ops = {`