LockD: manage grace list per network namespace

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

3 files changed, 13 insertions, 3 deletions

diff --git a/fs/lockd/grace.c b/fs/lockd/grace.c
index 183cc1f0af1c..8dbaff782098 100644
--- a/fs/lockd/grace.c
+++ b/fs/lockd/grace.c
@@ -4,8 +4,10 @@
 
 #include <linux/module.h>
 #include <linux/lockd/bind.h>
+#include <net/net_namespace.h>
+
+#include "netns.h"
 
-static LIST_HEAD(grace_list);
 static DEFINE_SPINLOCK(grace_lock);
 
 /**
@@ -21,8 +23,11 @@ static DEFINE_SPINLOCK(grace_lock);
  */
 void locks_start_grace(struct lock_manager *lm)
 {
+        struct net *net = &init_net;
+        struct lockd_net *ln = net_generic(net, lockd_net_id);
+
         spin_lock(&grace_lock);
-        list_add(&lm->list, &grace_list);
+        list_add(&lm->list, &ln->grace_list);
         spin_unlock(&grace_lock);
 }
 EXPORT_SYMBOL_GPL(locks_start_grace);
@@ -54,6 +59,9 @@ EXPORT_SYMBOL_GPL(locks_end_grace);
  */
 int locks_in_grace(void)
 {
-        return !list_empty(&grace_list);
+        struct net *net = &init_net;
+        struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+        return !list_empty(&ln->grace_list);
 }
 EXPORT_SYMBOL_GPL(locks_in_grace);
diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h
index e78650cb937c..4eee248ba96e 100644
--- a/fs/lockd/netns.h
+++ b/fs/lockd/netns.h
@@ -11,6 +11,7 @@ struct lockd_net {
 
         struct delayed_work grace_period_end;
         struct lock_manager lockd_manager;
+        struct list_head grace_list;
 };
 
 extern int lockd_net_id;
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index a9c436bc450c..834dfe2ed2e9 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -596,6 +596,7 @@ static int lockd_init_net(struct net *net)
         struct lockd_net *ln = net_generic(net, lockd_net_id);
 
         INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
+        INIT_LIST_HEAD(&ln->grace_list);
         return 0;
 }