Upstream changed the default rootfs to tmpfs when none has been passed to the kernel - this doesn't fit our purposes, so change it back. Signed-off-by: Imre Kaloz <kaloz@openwrt.org> --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -623,6 +623,7 @@ int __init init_rootfs(void) if (err) return err; +#if 0 if (IS_ENABLED(CONFIG_TMPFS) && !saved_root_name[0] && (!root_fs_names || strstr(root_fs_names, "tmpfs"))) { err = shmem_init(); @@ -630,6 +631,9 @@ int __init init_rootfs(void) } else { err = init_ramfs_fs(); } +#else + err = init_ramfs_fs(); +#endif if (err) unregister_filesystem(&rootfs_fs_type);