dlm: Send lockspace name with uevents

Although it is possible to get this information from the path,
its much easier to provide the lockspace as a seperate env
variable.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index c010ecfc0d2..26a8bd40400 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -191,6 +191,18 @@ static int do_uevent(struct dlm_ls *ls, int in)
         return error;
 }
 
+static int dlm_uevent(struct kset *kset, struct kobject *kobj,
+                      struct kobj_uevent_env *env)
+{
+        struct dlm_ls *ls = container_of(kobj, struct dlm_ls, ls_kobj);
+
+        add_uevent_var(env, "LOCKSPACE=%s", ls->ls_name);
+        return 0;
+}
+
+static struct kset_uevent_ops dlm_uevent_ops = {
+        .uevent = dlm_uevent,
+};
 
 int __init dlm_lockspace_init(void)
 {
@@ -199,7 +211,7 @@ int __init dlm_lockspace_init(void)
         INIT_LIST_HEAD(&lslist);
         spin_lock_init(&lslist_lock);
 
-        dlm_kset = kset_create_and_add("dlm", NULL, kernel_kobj);
+        dlm_kset = kset_create_and_add("dlm", &dlm_uevent_ops, kernel_kobj);
         if (!dlm_kset) {
                 printk(KERN_WARNING "%s: can not create kset\n", __func__);
                 return -ENOMEM;