linux-kernel - Re: [RFC c/r 2/4] [RFC] syscalls, x86: Add __NR

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Message-ID: <20120127184519.GJ11086@moon>
Date:	Fri, 27 Jan 2012 22:45:19 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Emelyanov <xemul@...nvz.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	Andrey Vagin <avagin@...nvz.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Glauber Costa <glommer@...allels.com>,
	Andi Kleen <andi@...stfloor.org>, Tejun Heo <tj@...nel.org>,
	Matt Helsley <matthltc@...ibm.com>,
	Pekka Enberg <penberg@...nel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Vasiliy Kulikov <segoon@...nwall.com>,
	Alexey Dobriyan <adobriyan@...il.com>, Valdis.Kletnieks@...edu
Subject: Re: [RFC c/r 2/4] [RFC] syscalls, x86: Add __NR_kcmp syscall v7

On Fri, Jan 27, 2012 at 10:40:54AM -0800, Eric W. Biederman wrote:
> Can you make the prototype:
> static int kcmp_ptr(void *v1, void *v2, enum kcmp_type type)
> 
> So the caller does not need to have casts?

Sure.

> I believe I commented on this earlier but it looks like it got lost in
> the noise.
> 
> file == NULL != file == NULL.
> 
> When you can't lookup the file kcmp should return -EBADF.
> 

Yes, Eric, I somehow missed it in replies flowing. I'll update.
Thanks!

	Cyrill
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