diff --git a/[refs] b/[refs]
index a274a88d1eae..c20264ccbbd0 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fa5e08156335d0687c85b4e724db9448fb166601
+refs/heads/master: 96200be3077c5ede16a90b33aca815b444e66043
diff --git a/trunk/fs/udf/super.c b/trunk/fs/udf/super.c
index abdb9b31da46..650f20fe9d62 100644
--- a/trunk/fs/udf/super.c
+++ b/trunk/fs/udf/super.c
@@ -1208,6 +1208,14 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
 	ret = udf_fill_partdesc_info(sb, p, i);
 	if (ret)
 		goto out_bh;
+	/*
+	 * Mark filesystem read-only if we have a partition with virtual map
+	 * since we don't handle writing to it (we overwrite blocks instead of
+	 * relocating them).
+	 */
+	sb->s_flags |= MS_RDONLY;
+	printk(KERN_NOTICE "UDF-fs: Filesystem marked read-only because "
+		"writing to pseudooverwrite partition is not implemented.\n");
 
 	ret = udf_load_vat(sb, i, type1_idx);
 out_bh: