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-rw-r--r--net/sunrpc/rpc_pipe.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 80f5dd23417d..e659def77742 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -1152,14 +1152,19 @@ static void rpc_kill_sb(struct super_block *sb)
struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
mutex_lock(&sn->pipefs_sb_lock);
+ if (sn->pipefs_sb != sb) {
+ mutex_unlock(&sn->pipefs_sb_lock);
+ goto out;
+ }
sn->pipefs_sb = NULL;
mutex_unlock(&sn->pipefs_sb_lock);
- put_net(net);
dprintk("RPC: sending pipefs UMOUNT notification for net %p%s\n",
net, NET_NAME(net));
blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
RPC_PIPEFS_UMOUNT,
sb);
+ put_net(net);
+out:
kill_litter_super(sb);
}