[PATCH v2 07/15] LockD: manage grace period per network namespace

[Stanislav Kinsbursky]

Signed-off-by: Stanislav Kinsbursky <skinsbur...@parallels.com>
---
 fs/lockd/netns.h |    2 ++
 fs/lockd/svc.c   |   17 +++++++++++------
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h
index 44c8f0b..94653ae 100644
--- a/fs/lockd/netns.h
+++ b/fs/lockd/netns.h
@@ -7,6 +7,8 @@ struct lockd_net {
        unsigned int nlmsvc_users;
        unsigned long next_gc;
        unsigned long nrhosts;
+
+       struct delayed_work grace_period_end;
 };
 
 extern int lockd_net_id;
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 80938fd..70c4177 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -95,21 +95,22 @@ static void grace_ender(struct work_struct *not_used)
        locks_end_grace(&lockd_manager);
 }
 
-static DECLARE_DELAYED_WORK(grace_period_end, grace_ender);
-
 static void set_grace_period(void)
 {
        unsigned long grace_period = get_lockd_grace_period();
+       struct lockd_net *ln = net_generic(&init_net, lockd_net_id);
 
        locks_start_grace(&lockd_manager);
-       cancel_delayed_work_sync(&grace_period_end);
-       schedule_delayed_work(&grace_period_end, grace_period);
+       cancel_delayed_work_sync(&ln->grace_period_end);
+       schedule_delayed_work(&ln->grace_period_end, grace_period);
 }
 
 static void restart_grace(void)
 {
        if (nlmsvc_ops) {
-               cancel_delayed_work_sync(&grace_period_end);
+               struct lockd_net *ln = net_generic(&init_net, lockd_net_id);
+
+               cancel_delayed_work_sync(&ln->grace_period_end);
                locks_end_grace(&lockd_manager);
                nlmsvc_invalidate_all();
                set_grace_period();
@@ -124,6 +125,7 @@ lockd(void *vrqstp)
 {
        int             err = 0, preverr = 0;
        struct svc_rqst *rqstp = vrqstp;
+       struct lockd_net *ln = net_generic(&init_net, lockd_net_id);
 
        /* try_to_freeze() is called from svc_recv() */
        set_freezable();
@@ -184,7 +186,7 @@ lockd(void *vrqstp)
                svc_process(rqstp);
        }
        flush_signals(current);
-       cancel_delayed_work_sync(&grace_period_end);
+       cancel_delayed_work_sync(&ln->grace_period_end);
        locks_end_grace(&lockd_manager);
        if (nlmsvc_ops)
                nlmsvc_invalidate_all();
@@ -589,6 +591,9 @@ module_param(nlm_max_connections, uint, 0644);
 
 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);
        return 0;
 }
 

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