diff --git a/fs/namespace.c b/fs/namespace.c
index 24488a4..af36e11 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -482,6 +482,7 @@
 
 static void free_vfsmnt(struct mount *mnt)
 {
+	kfree(mnt->mnt.data);
 	kfree(mnt->mnt_devname);
 	mnt_free_id(mnt);
 #ifdef CONFIG_SMP
@@ -698,11 +699,21 @@
 	if (!mnt)
 		return ERR_PTR(-ENOMEM);
 
+	mnt->mnt.data = NULL;
+	if (type->alloc_mnt_data) {
+		mnt->mnt.data = type->alloc_mnt_data();
+		if (!mnt->mnt.data) {
+			mnt_free_id(mnt);
+			free_vfsmnt(mnt);
+			return ERR_PTR(-ENOMEM);
+		}
+	}
 	if (flags & MS_KERNMOUNT)
 		mnt->mnt.mnt_flags = MNT_INTERNAL;
 
 	root = mount_fs(type, flags, name, data);
 	if (IS_ERR(root)) {
+		kfree(mnt->mnt.data);
 		free_vfsmnt(mnt);
 		return ERR_CAST(root);
 	}
@@ -729,6 +740,13 @@
 	if (!mnt)
 		return ERR_PTR(-ENOMEM);
 
+	if (sb->s_op->clone_mnt_data) {
+		mnt->mnt.data = sb->s_op->clone_mnt_data(old->mnt.data);
+		if (!mnt->mnt.data) {
+			goto out_free;
+		}
+	}
+
 	if (flag & (CL_SLAVE | CL_PRIVATE))
 		mnt->mnt_group_id = 0; /* not a peer of original */
 	else
@@ -774,6 +792,7 @@
 	return mnt;
 
  out_free:
+	kfree(mnt->mnt.data);
 	free_vfsmnt(mnt);
 	return ERR_PTR(err);
 }
@@ -1711,8 +1730,12 @@
 	down_write(&sb->s_umount);
 	if (flags & MS_BIND)
 		err = change_mount_flags(path->mnt, flags);
-	else
+	else {
 		err = do_remount_sb(sb, flags, data, 0);
+		br_write_lock(&vfsmount_lock);
+		propagate_remount(mnt);
+		br_write_unlock(&vfsmount_lock);
+	}
 	if (!err) {
 		br_write_lock(&vfsmount_lock);
 		mnt_flags |= mnt->mnt.mnt_flags & ~MNT_USER_SETTABLE_MASK;
diff --git a/fs/pnode.c b/fs/pnode.c
index 61f3d51..c1148ba 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -356,3 +356,17 @@
 		__propagate_umount(mnt);
 	return 0;
 }
+
+int propagate_remount(struct mount *mnt) {
+	struct mount *m;
+	struct super_block *sb = mnt->mnt.mnt_sb;
+	int ret = 0;
+
+	if (sb->s_op->copy_mnt_data) {
+		for (m = first_slave(mnt); m->mnt_slave.next != &mnt->mnt_slave_list; m = next_slave(m)) {
+			sb->s_op->copy_mnt_data(m->mnt.data, mnt->mnt.data);
+		}
+	}
+
+	return ret;
+}
diff --git a/fs/pnode.h b/fs/pnode.h
index 3471ddf..7bcd512 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -35,6 +35,7 @@
 		struct list_head *);
 int propagate_umount(struct list_head *);
 int propagate_mount_busy(struct mount *, int);
+int propagate_remount(struct mount *);
 void mnt_release_group_id(struct mount *);
 int get_dominating_id(struct mount *mnt, const struct path *root);
 unsigned int mnt_get_count(struct mount *mnt);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0ce3614..3f76490 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1729,6 +1729,8 @@
 	int (*unfreeze_fs) (struct super_block *);
 	int (*statfs) (struct dentry *, struct kstatfs *);
 	int (*remount_fs) (struct super_block *, int *, char *);
+	void *(*clone_mnt_data) (void *);
+	void (*copy_mnt_data) (void *, void *);
 	void (*umount_begin) (struct super_block *);
 
 	int (*show_options)(struct seq_file *, struct dentry *);
@@ -1884,6 +1886,7 @@
 #define FS_RENAME_DOES_D_MOVE  32768   /* FS will handle d_move() during rename() internally. */
 	struct dentry *(*mount) (struct file_system_type *, int,
 		       const char *, void *);
+	void *(*alloc_mnt_data) (void);
 	void (*kill_sb) (struct super_block *);
 	struct module *owner;
 	struct file_system_type * next;
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 2044aac..0e3e46e 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -53,6 +53,7 @@
 	struct dentry *mnt_root;	/* root of the mounted tree */
 	struct super_block *mnt_sb;	/* pointer to superblock */
 	int mnt_flags;
+	void *data;
 };
 
 struct file; /* forward dec */