ocfs2: Create the lock status block union.

Wrap the lock status block (lksb) in a union.  Later we will add a union
element for the fs/dlm lksb.  Create accessors for the status and lvb
fields.

Other than a debugging function, dlmglue.c does not directly reference
the o2dlm locking path anymore.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 8ebcfba62c7..3c91e241892 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -40,18 +40,25 @@ struct ocfs2_locking_protocol {
         void (*lp_unlock_ast)(void *astarg, int error);
 };
 
+union ocfs2_dlm_lksb {
+        struct dlm_lockstatus lksb_o2dlm;
+};
+
 int ocfs2_dlm_lock(struct dlm_ctxt *dlm,
                    int mode,
-                   struct dlm_lockstatus *lksb,
+                   union ocfs2_dlm_lksb *lksb,
                    u32 flags,
                    void *name,
                    unsigned int namelen,
                    void *astarg);
 int ocfs2_dlm_unlock(struct dlm_ctxt *dlm,
-                     struct dlm_lockstatus *lksb,
+                     union ocfs2_dlm_lksb *lksb,
                      u32 flags,
                      void *astarg);
 
+int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb);
+void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb);
+
 void o2cb_get_stack(struct ocfs2_locking_protocol *proto);
 void o2cb_put_stack(void);