diff -r -u linux-stage.orig/fs/ext4/super.c linux-stage/fs/ext4/super.c
--- linux-stage.orig/fs/ext4/super.c	2012-12-31 12:55:18.000000000 -0500
+++ linux-stage/fs/ext4/super.c	2012-12-31 12:56:14.000000000 -0500
@@ -59,6 +59,8 @@
 static struct mutex ext4_li_mtx;
 static struct ext4_features *ext4_feat;

+static int force_over_128tb;
+
 static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
 			     unsigned long journal_devnum);
 static int ext4_commit_super(struct super_block *sb, int sync);
@@ -1298,7 +1300,7 @@
 	Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
 	Opt_inode_readahead_blks, Opt_journal_ioprio,
 	Opt_dioread_nolock, Opt_dioread_lock,
-	Opt_mballoc, Opt_bigendian_extents,
+	Opt_mballoc, Opt_bigendian_extents, Opt_force_over_128tb,
 	Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
 };

@@ -1374,6 +1376,7 @@
 	{Opt_dioread_nolock, "dioread_nolock"},
 	{Opt_dioread_lock, "dioread_lock"},
 	{Opt_bigendian_extents, "bigendian_extents"},
+	{Opt_force_over_128tb, "force_over_128tb"},
 	{Opt_mballoc, "mballoc"},
 	{Opt_discard, "discard"},
 	{Opt_nodiscard, "nodiscard"},
@@ -1879,6 +1882,9 @@
 			break;
 		case Opt_mballoc:
 			break;
+		case Opt_force_over_128tb:
+			force_over_128tb = 1;
+			break;
 		default:
 			ext4_msg(sb, KERN_ERR,
 			       "Unrecognized mount option \"%s\" "
@@ -3394,6 +3400,16 @@
 		goto failed_mount;
 	}

+	if (ext4_blocks_count(es) > (8ULL << 32)) {
+		if (force_over_128tb == 0) {
+			printk(KERN_ERR "EXT4-fs does not support filesystems "
+			       "greater than 128TB and can cause data corruption."
+			       "Use \"force_over_128tb\" mount option to override."
+			       "\n");
+			goto failed_mount;
+		}
+	}
+
 	if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
 		goto cantfind_ext4;