[GFS2] Remove one typedef

This removes one of the typedefs from the locking interface. It
is replaced by a forward declaration of the gfs2 superblock. The
other two are not so easy to solve since in their case, they
can refer to one of two possible structures.

Cc: David Teigland <teigland@redhat.com>
Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index c7b6e37..e6898d2 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -67,7 +67,7 @@
 	int			fsflags;
 	dlm_lockspace_t		*dlm_lockspace;
 	lm_callback_t		fscb;
-	lm_fsdata_t		*fsdata;
+	struct gfs2_sbd		*sdp;
 	int			recover_jid;
 	int			recover_jid_done;
 	int			recover_jid_status;
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index 82ac00a..8a1764f 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -14,7 +14,7 @@
 struct lm_lockops gdlm_ops;
 
 
-static struct gdlm_ls *init_gdlm(lm_callback_t cb, lm_fsdata_t *fsdata,
+static struct gdlm_ls *init_gdlm(lm_callback_t cb, struct gfs2_sbd *sdp,
 				 int flags, char *table_name)
 {
 	struct gdlm_ls *ls;
@@ -27,7 +27,7 @@
 	ls->drop_locks_count = gdlm_drop_count;
 	ls->drop_locks_period = gdlm_drop_period;
 	ls->fscb = cb;
-	ls->fsdata = fsdata;
+	ls->sdp = sdp;
 	ls->fsflags = flags;
 	spin_lock_init(&ls->async_lock);
 	INIT_LIST_HEAD(&ls->complete);
@@ -120,7 +120,7 @@
 }
 
 static int gdlm_mount(char *table_name, char *host_data,
-			lm_callback_t cb, lm_fsdata_t *fsdata,
+			lm_callback_t cb, struct gfs2_sbd *sdp,
 			unsigned int min_lvb_size, int flags,
 			struct lm_lockstruct *lockstruct,
 			struct kobject *fskobj)
@@ -131,7 +131,7 @@
 	if (min_lvb_size > GDLM_LVB_SIZE)
 		goto out;
 
-	ls = init_gdlm(cb, fsdata, flags, table_name);
+	ls = init_gdlm(cb, sdp, flags, table_name);
 	if (!ls)
 		goto out;
 
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index c1237a91..29ae06f 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -102,7 +102,7 @@
 static ssize_t recover_store(struct gdlm_ls *ls, const char *buf, size_t len)
 {
 	ls->recover_jid = simple_strtol(buf, NULL, 0);
-	ls->fscb(ls->fsdata, LM_CB_NEED_RECOVERY, &ls->recover_jid);
+	ls->fscb(ls->sdp, LM_CB_NEED_RECOVERY, &ls->recover_jid);
 	return len;
 }
 
diff --git a/fs/gfs2/locking/dlm/thread.c b/fs/gfs2/locking/dlm/thread.c
index d4895ec..554bf88 100644
--- a/fs/gfs2/locking/dlm/thread.c
+++ b/fs/gfs2/locking/dlm/thread.c
@@ -41,7 +41,7 @@
 		gdlm_assert(0, "unknown bast mode %u", lp->bast_mode);
 	}
 
-	ls->fscb(ls->fsdata, cb, &lp->lockname);
+	ls->fscb(ls->sdp, cb, &lp->lockname);
 }
 
 static void process_complete(struct gdlm_lock *lp)
@@ -232,7 +232,7 @@
 	    (lp->cur > DLM_LOCK_NL) && (prev_mode > DLM_LOCK_NL))
 		acb.lc_ret |= LM_OUT_CACHEABLE;
 
-	ls->fscb(ls->fsdata, LM_CB_ASYNC, &acb);
+	ls->fscb(ls->sdp, LM_CB_ASYNC, &acb);
 }
 
 static inline int no_work(struct gdlm_ls *ls, int blocking)
@@ -318,7 +318,7 @@
 			gdlm_do_lock(lp);
 
 		if (drop)
-			ls->fscb(ls->fsdata, LM_CB_DROPLOCKS, NULL);
+			ls->fscb(ls->sdp, LM_CB_DROPLOCKS, NULL);
 
 		schedule();
 	}
diff --git a/fs/gfs2/locking/nolock/main.c b/fs/gfs2/locking/nolock/main.c
index 95a2991..e326079 100644
--- a/fs/gfs2/locking/nolock/main.c
+++ b/fs/gfs2/locking/nolock/main.c
@@ -24,7 +24,7 @@
 static struct lm_lockops nolock_ops;
 
 static int nolock_mount(char *table_name, char *host_data,
-			lm_callback_t cb, lm_fsdata_t *fsdata,
+			lm_callback_t cb, struct gfs2_sbd *sdp,
 			unsigned int min_lvb_size, int flags,
 			struct lm_lockstruct *lockstruct,
 			struct kobject *fskobj)