ocfs2: Hang the locking proto on the cluster conn and use it in asts.

With the ocfs2_cluster_connection hanging off of the ocfs2_dlm_lksb, we
have access to it in the ast and bast wrapper functions.  Attach the
ocfs2_locking_protocol to the conn.

Now, instead of refering to a static variable for ast/bast pointers, the
wrappers can look at the connection.  This means different connections
can have different ast/bast pointers, and it reduces the need for the
static pointer.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 3 insertions, 7 deletions

diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 31276bac78f5..b4cf616ef423 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -668,8 +668,6 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
         struct ocfs2_dlm_lksb *lksb = astarg;
         int status = lksb->lksb_fsdlm.sb_status;
 
-        BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
-
         /*
          * For now we're punting on the issue of other non-standard errors
          * where we can't tell if the unlock_ast or lock_ast should be called.
@@ -681,18 +679,16 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
          */
 
         if (status == -DLM_EUNLOCK || status == -DLM_ECANCEL)
-                ocfs2_user_plugin.sp_proto->lp_unlock_ast(lksb, 0);
+                lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, 0);
         else
-                ocfs2_user_plugin.sp_proto->lp_lock_ast(lksb);
+                lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
 }
 
 static void fsdlm_blocking_ast_wrapper(void *astarg, int level)
 {
         struct ocfs2_dlm_lksb *lksb = astarg;
 
-        BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
-
-        ocfs2_user_plugin.sp_proto->lp_blocking_ast(lksb, level);
+        lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
 }
 
 static int user_dlm_lock(struct ocfs2_cluster_connection *conn,