[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/fs/ecryptfs/netlink.c b/fs/ecryptfs/netlink.c
index 8405d216a5fc..fe9186312d7c 100644
--- a/fs/ecryptfs/netlink.c
+++ b/fs/ecryptfs/netlink.c
@@ -229,7 +229,7 @@ int ecryptfs_init_netlink(void)
 
         ecryptfs_nl_sock = netlink_kernel_create(NETLINK_ECRYPTFS, 0,
                                                  ecryptfs_receive_nl_message,
-                                                 THIS_MODULE);
+                                                 NULL, THIS_MODULE);
         if (!ecryptfs_nl_sock) {
                 rc = -EIO;
                 ecryptfs_printk(KERN_ERR, "Failed to create netlink socket\n");