Re: [RFC PATCH v3 09/11] xfs: Implement RWF_NOSERIAL to parallelize RWF_WRITETHROUGH writes

>  	}
>  
> +	/*
> +	 * Writethrough implies non-serial writes ie writes can go
> +	 * parallelly.
> +	 */
> +	if (flags & RWF_WRITETHROUGH)
> +		kiocb_flags |= IOCB_NOSERIAL;
> +

From a user perspective, shouldn't this be an explicit user flag instead
of implicitly enabling for all RWF_WRITETHROUGH?

Power users who would want performance over POSIX compliance can enable
this but it should not be the other way around IMO.

--
Pankaj