linux-kernel - Re: [PATCH 0/4] promote zcache from staging

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Message-ID: <20120807004405.GA19515@bbox>
Date:	Tue, 7 Aug 2012 09:44:05 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Dan Magenheimer <dan.magenheimer@...cle.com>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Konrad Wilk <konrad.wilk@...cle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Konrad Rzeszutek Wilk <konrad@...nok.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>,
	Nitin Gupta <ngupta@...are.org>
Subject: Re: [PATCH 0/4] promote zcache from staging

Hi Dan,

On Mon, Aug 06, 2012 at 09:21:22AM -0700, Dan Magenheimer wrote:
> > From: Pekka Enberg [mailto:penberg@...nel.org]
> > Subject: Re: [PATCH 0/4] promote zcache from staging
> > 
> > On Mon, Aug 6, 2012 at 6:24 PM, Dan Magenheimer
> > <dan.magenheimer@...cle.com> wrote:
> > > IMHO, the fastest way to get the best zcache into the kernel and
> > > to distros and users is to throw away the "demo" version, move forward
> > > to a new solid well-designed zcache code base, and work together to
> > > build on it.  There's still a lot to do so I hope we can work together.
> > 
> > I'm not convinced it's the _fastest way_.
> 
> <grin> I guess I meant "optimal", combining "fast" and "best".
> 
> > You're effectively
> > invalidating all the work done under drivers/staging so you might end up
> > in review limbo with your shiny new code...
> 
> Fixing the fundamental design flaws will sooner or later invalidate
> most (or all) of the previous testing/work anyway, won't it?  Since
> any kernel built with staging is "tainted" already, I feel like now
> is a better time to make a major design transition.
> 
> I suppose:
> 
>  (E) replace "demo" zcache with new code base and keep it
>      in staging for another cycle

I go for (E). Please send your refactoring code as formal patch.
Thanks.

-- 
Kind regards,
Minchan Kim
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