linux-kernel - Re: [RFC][v8][PATCH 0/10] Implement clone3() system call

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Date:	Wed, 21 Oct 2009 14:11:49 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	Matt Helsley <matthltc@...ibm.com>,
	Oren Laadan <orenl@...rato.com>,
	Daniel Lezcano <daniel.lezcano@...e.fr>,
	randy.dunlap@...cle.com, arnd@...db.de, linux-api@...r.kernel.org,
	Containers <containers@...ts.linux-foundation.org>,
	Nathan Lynch <nathanl@...tin.ibm.com>,
	linux-kernel@...r.kernel.org, Louis.Rilling@...labs.com,
	kosaki.motohiro@...fujitsu.com, hpa@...or.com, mingo@...e.hu,
	torvalds@...ux-foundation.org,
	Alexey Dobriyan <adobriyan@...il.com>, roland@...hat.com,
	Pavel Emelyanov <xemul@...nvz.org>
Subject: Re: [RFC][v8][PATCH 0/10] Implement clone3() system call

Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> writes:

> Eric W. Biederman [ebiederm@...ssion.com] wrote:
> | Not what I was thinking.  The following untested patch is what I was
> | thinking.  It just exposes last, min, and max to the callers which pass
> | in different appropriate values.
>
>
> Minor comments are that the caller has to choose which function to call
> and passing in 'target-1' for the 'last' in set_pidmap() seems a bit
> unnatural. But I can't think of a better way and I think this will work.
> Will test it out.

Thanks.  My primary concern was that we don't unnecessarily duplicate all
of the weird allocating a bitmap page code etc.

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