linux-kernel - Re: [patch 5/5] elf: Add support for loading ET

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Message-ID: <20111021184239.GI31508@moon>
Date:	Fri, 21 Oct 2011 22:42:39 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Pavel Emelyanov <xemul@...allels.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrey Vagin <avagin@...allels.com>,
	James Bottomley <jbottomley@...allels.com>,
	Glauber Costa <glommer@...allels.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [patch 5/5] elf: Add support for loading ET_CKPT files

On Fri, Oct 21, 2011 at 10:36:28PM +0400, Cyrill Gorcunov wrote:
...
> 
> > I think this comes back to why one-stop-solution-in-kernel is a bad
> > idea for CR.  My impression is that when people say "that would
> > require too many small API updatesa", it usually means that they
> > haven't really thought about each necessary piece enough and just

Don't claim such things, Tejun. Yes, I'm missing a number of things
(the same applies to you as well), but this patch was not 'just a
fast way to achieve what we need'. It's rather an attempt to gather
all things I've missed and provide more robust/solid version at the
next iteration (regargless which form this patch appeared, complete
user-space solution, some kernel api extension of whatever).

> > hacked something up lumpy and fuzzy on the edges.  The thing is that
> > no matter how you lump them, those problems don't go away and
> > attacking things in small understandable API pieces not only ensures
> > the update itself makes sense and may be useful for others too but
> > also forces people to actually think about each problem.
> > 
> 

	Cyrill
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