Re: [PATCH] fs: support filename refcount without atomics

[Jens Axboe]

> +static inline void makeatomicname(struct filename *name)
> +{
> +	VFS_BUG_ON(IS_ERR_OR_NULL(name));
> +	/*
> +	 * The name can legitimately already be atomic if it was cached by audit.
> +	 * If switching the refcount to atomic, we need not to know we are the
> +	 * only non-atomic user.
> +	 */
> +	VFS_BUG_ON(name->owner != current && !name->is_atomic);
> +	/*
> +	 * Don't bother branching, this is a store to an already dirtied cacheline.
> +	 */
> +	name->is_atomic = true;
> +}

Should this not depend on audit being enabled? io_uring without audit is
fine.

-- 
Jens Axboe