diff --git a/mm/shmem.c b/mm/shmem.c
index 5c90d84c2b02..197ca5eccbae 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2766,6 +2766,7 @@ static struct file_system_type shmem_fs_type = {
 	.name		= "tmpfs",
 	.mount		= shmem_mount,
 	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_USERNS_MOUNT,
 };
 
 int __init shmem_init(void)
@@ -2823,6 +2824,7 @@ static struct file_system_type shmem_fs_type = {
 	.name		= "tmpfs",
 	.mount		= ramfs_mount,
 	.kill_sb	= kill_litter_super,
+	.fs_flags	= FS_USERNS_MOUNT,
 };
 
 int __init shmem_init(void)