Lockd: pass network namespace to creation and destruction routines

v2: dereference of most probably already released nlm_host removed in
nlmclnt_done() and reclaimer().

These routines are called from locks reclaimer() kernel thread. This thread
works in "init_net" network context and currently relays on persence on lockd
thread and it's per-net resources. Thus lockd_up() and lockd_down() can't relay
on current network context. So let's pass corrent one into them.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index f49b9afc4436..1ead0750cdbb 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -295,11 +295,10 @@ static void lockd_down_net(struct net *net)
 /*
  * Bring up the lockd process if it's not already up.
  */
-int lockd_up(void)
+int lockd_up(struct net *net)
 {
         struct svc_serv *serv;
         int             error = 0;
-        struct net *net = current->nsproxy->net_ns;
 
         mutex_lock(&nlmsvc_mutex);
         /*
@@ -378,12 +377,12 @@ EXPORT_SYMBOL_GPL(lockd_up);
  * Decrement the user count and bring down lockd if we're the last.
  */
 void
-lockd_down(void)
+lockd_down(struct net *net)
 {
         mutex_lock(&nlmsvc_mutex);
         if (nlmsvc_users) {
                 if (--nlmsvc_users) {
-                        lockd_down_net(current->nsproxy->net_ns);
+                        lockd_down_net(net);
                         goto out;
                 }
         } else {