1 files changed, 6 insertions, 1 deletions

diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index c24f1e10b946..8f7fe323e049 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -247,7 +247,12 @@ struct dentry *ramfs_mount(struct file_system_type *fs_type,
 static struct dentry *rootfs_mount(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data)
 {
-        return mount_nodev(fs_type, flags|MS_NOUSER, data, ramfs_fill_super);
+        static unsigned long once;
+
+        if (test_and_set_bit(1, &once))
+                return ERR_PTR(-ENODEV);
+
+        return mount_nodev(fs_type, flags, data, ramfs_fill_super);
 }
 
 static void ramfs_kill_sb(struct super_block *sb)