Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 8 Jul 2020 17:38:59 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     =?iso-8859-1?Q?Ren=E9?= Rebe <rene@exactcode.com>
Cc:     linux-kernel@vger.kernel.org, viro@zeniv.linux.org
Subject: Re: Vectored syscalls Was: [PATCH 0/3] readfile(2): a new syscall to
 make open/read/close faster
Message-ID: <20200708153859.GB715257@kroah.com>
References: <3ADE6606-6572-4D7D-BB8F-9286B368DF93@exactcode.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <3ADE6606-6572-4D7D-BB8F-9286B368DF93@exactcode.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, Jul 08, 2020 at 05:16:41PM +0200, Ren? Rebe wrote:
> Hey there,
> 
> maybe instead of this rather specific, niche readfile syscall, would it not be beneficial
> to allow issuing any group or bundle of several arbitrary system calls so this could also
> be used to speed up other, more demanding high performance applications that need
> a bit more than just readfile()?

Why not just use io_uring for that for I/O calls, that's what it is
designed for.

More "generic" syscall batching always ends up falling down in
complexity anytime anyone tries it.  Good luck!

greg k-h