Current code use ramfs instead of tmpfs for stub when root= defined. But for real use case with initramfs, usually there's like cmdline like root=UUID=$UUID the root dev is the real device. For that case we have no way to use initmpfs, thus this patch removes the limitation so tmpfs can benefit more people.
The logic become: if CONFIG_TMPFS && rootfstype is not ramfs use tmpfs else use ramfs Signed-off-by: Dave Young <dyo...@redhat.com> --- init/do_mounts.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/init/do_mounts.c b/init/do_mounts.c index 8e5addc..6fde471 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -622,8 +622,8 @@ int __init init_rootfs(void) if (err) return err; - if (IS_ENABLED(CONFIG_TMPFS) && !saved_root_name[0] && - (!root_fs_names || strstr(root_fs_names, "tmpfs"))) { + if (IS_ENABLED(CONFIG_TMPFS) && + (root_fs_names && !(strstr(root_fs_names, "ramfs")))) { err = shmem_init(); is_tmpfs = true; } else { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/