diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index f6b8b00..91abdbe 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -14,7 +14,7 @@
 #include <linux/dcache.h>
 #include "incore.h"
 
-void gfs2_lm_unmount(struct gfs2_sbd *sdp);
+extern void gfs2_lm_unmount(struct gfs2_sbd *sdp);
 
 static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
 {
@@ -27,21 +27,23 @@
 
 void gfs2_jindex_free(struct gfs2_sbd *sdp);
 
-struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
-int gfs2_jdesc_check(struct gfs2_jdesc *jd);
+extern int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *data);
 
-int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
-			      struct gfs2_inode **ipp);
+extern struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
+extern int gfs2_jdesc_check(struct gfs2_jdesc *jd);
 
-int gfs2_make_fs_rw(struct gfs2_sbd *sdp);
+extern int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
+				     struct gfs2_inode **ipp);
 
-int gfs2_statfs_init(struct gfs2_sbd *sdp);
-void gfs2_statfs_change(struct gfs2_sbd *sdp,
-			s64 total, s64 free, s64 dinodes);
-int gfs2_statfs_sync(struct gfs2_sbd *sdp);
+extern int gfs2_make_fs_rw(struct gfs2_sbd *sdp);
 
-int gfs2_freeze_fs(struct gfs2_sbd *sdp);
-void gfs2_unfreeze_fs(struct gfs2_sbd *sdp);
+extern int gfs2_statfs_init(struct gfs2_sbd *sdp);
+extern void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
+			       s64 dinodes);
+extern int gfs2_statfs_sync(struct gfs2_sbd *sdp);
+
+extern int gfs2_freeze_fs(struct gfs2_sbd *sdp);
+extern void gfs2_unfreeze_fs(struct gfs2_sbd *sdp);
 
 extern struct file_system_type gfs2_fs_type;
 extern struct file_system_type gfs2meta_fs_type;