[NETLINK]: Switch cb_lock spinlock to mutex and allow to override it

Switch cb_lock to mutex and allow netlink kernel users to override it
with a subsystem specific mutex for consistent locking in dump callbacks.
All netlink_dump_start users have been audited not to rely on any
side-effects of the previously used spinlock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 84272ed77f03..82fc1794b691 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -293,7 +293,7 @@ EXPORT_SYMBOL_GPL(add_uevent_var);
 static int __init kobject_uevent_init(void)
 {
         uevent_sock = netlink_kernel_create(NETLINK_KOBJECT_UEVENT, 1, NULL,
-                                            THIS_MODULE);
+                                            NULL, THIS_MODULE);
 
         if (!uevent_sock) {
                 printk(KERN_ERR