linux-kernel - Re: [RFC][PATCH 1/4] checkpoint-restart: general infrastructure

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Date:	Mon, 11 Aug 2008 10:11:45 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	"Serge E. Hallyn" <serue@...ibm.com>,
	containers@...ts.linux-foundation.org,
	Theodore Tso <tytso@....edu>, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 1/4] checkpoint-restart: general infrastructure

On Mon, 2008-08-11 at 18:53 +0200, Arnd Bergmann wrote:
> The best way I can think of for this would be to use existing syscalls
> (e.g. sched_setscheduler, setfsuid, ...) from user space whereever
> possible and do only the bare minimum for the restart part in the
> kernel.

Well, the current direction is about as far away from that as you can
get, unless we basically call those system calls from inside our new
sys_restart() one.  As of now, we're as much work in the kernel as
possible, and doing the bare minimum in userspace.  That's what both
Oren and our OpenVZ colleagues have advocated.

-- Dave

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