Index: linux-stage/fs/ext4/super.c
===================================================================
--- linux-stage.orig/fs/ext4/super.c
+++ linux-stage/fs/ext4/super.c
@@ -4642,6 +4646,11 @@ static void __exit exit_ext4_fs(void)
 	exit_ext4_system_zone();
 }
 
+EXPORT_SYMBOL(ext4_bread);
+EXPORT_SYMBOL(ext4_journal_start_sb);
+EXPORT_SYMBOL(__ext4_journal_stop);
+EXPORT_SYMBOL(ext4_force_commit);
+
 MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
 MODULE_DESCRIPTION("Fourth Extended Filesystem");
 MODULE_LICENSE("GPL");
Index: linux-stage/fs/ext4/ext4.h
===================================================================
--- linux-stage.orig/fs/ext4/ext4.h
+++ linux-stage/fs/ext4/ext4.h
@@ -1643,6 +1643,8 @@ extern unsigned ext4_init_inode_bitmap(s
 				       struct buffer_head *bh,
 				       ext4_group_t group,
 				       struct ext4_group_desc *desc);
+extern struct buffer_head *ext4_read_inode_bitmap(struct super_block *sb,
+						  ext4_group_t block_group);
 extern void mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
 extern int ext4_init_inode_table(struct super_block *sb,
 				 ext4_group_t group, int barrier);
Index: linux-stage/fs/ext4/ialloc.c
===================================================================
--- linux-stage.orig/fs/ext4/ialloc.c
+++ linux-stage/fs/ext4/ialloc.c
@@ -97,7 +97,7 @@ unsigned ext4_init_inode_bitmap(struct s
  *
  * Return buffer_head of bitmap on success or NULL.
  */
-static struct buffer_head *
+struct buffer_head *
 ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
 {
 	struct ext4_group_desc *desc;
@@ -161,6 +161,7 @@ ext4_read_inode_bitmap(struct super_bloc
 	}
 	return bh;
 }
+EXPORT_SYMBOL(ext4_read_inode_bitmap);
 
 /*
  * NOTE! When we get the inode, we're the only people
Index: linux-stage/fs/ext4/balloc.c
===================================================================
--- linux-stage.orig/fs/ext4/balloc.c
+++ linux-stage/fs/ext4/balloc.c
@@ -229,6 +229,7 @@ struct ext4_group_desc * ext4_get_group_
 		*bh = sbi->s_group_desc[group_desc];
 	return desc;
 }
+EXPORT_SYMBOL(ext4_get_group_desc);
 
 static int ext4_valid_block_bitmap(struct super_block *sb,
 					struct ext4_group_desc *desc,
Index: linux-stage/fs/ext4/inode.c
===================================================================
--- linux-stage.orig/fs/ext4/inode.c
+++ linux-stage/fs/ext4/inode.c
@@ -5131,6 +5131,7 @@ out_stop:
 
 	ext4_journal_stop(handle);
 }
+EXPORT_SYMBOL(ext4_truncate);
 
 /*
  * ext4_get_inode_loc returns with an extra refcount against the inode's