Re: [PATCH 10/32] VFS: Implement a filesystem superblock creation/configuration context [ver #8]

[Al Viro]

On Tue, Jul 03, 2018 at 10:53:22PM +0100, David Howells wrote:
> -				if (s) {
> -					up_write(&s->s_umount);
> +				if (s)
>  					destroy_unused_super(s);

static void destroy_unused_super(struct super_block *s)
{
        if (!s)
                return;
	...
}

IOW, all of those should be unconditional.