linux-kernel - Re: lowmemory android driver not needed?

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Date:	Fri, 16 Jan 2009 07:23:38 -0800
From:	Greg KH <greg@...ah.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Paul Mundt <lethal@...ux-sh.org>,
	Trilok Soni <soni.trilok@...il.com>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Machek <pavel@...e.cz>,
	Brian Swetland <swetland@...gle.com>, arve@...gle.com,
	San Mehat <san@...roid.com>, Robert Love <rlove@...gle.com>,
	linux-kernel@...r.kernel.org,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>,
	ext Juha Yrj?l? <juha.yrjola@...idboot.com>,
	viktor.rosendahl@...ia.com
Subject: Re: lowmemory android driver not needed?

On Fri, Jan 16, 2009 at 08:16:51PM +0900, KOSAKI Motohiro wrote:
> 
> As far as I know, embedded guys strong want to lowmem notification mecanism.

I think the big server guys also want the same thing :)

> At least, I and my mem_notify receive multiple contact from embedded
> and JavaVM developer.
>  (include sun javavm engineer)
> 
> In ideal, I think linux MM should care this requirement directly.

I agree.

> LSM and driver notifier is easy breakable because these component
> deeply depend on MM.

Agreed.

> (eg, I developed /dev/mem_notify patch last year. but this patch don't
> work on 2.6.28 because split-lru patch series totally changed MM
> reclaim processing.)
> 
> Unfortunately, we don't have any consensus of memory notification requirement.
> various people have various requirement. so, if I can discuss it and
> we get consensus, I'm glad.

Care to work on your mem_notify patch again and bring it up to date?
That would be a good place to start working from, right?

thanks,

greg k-h
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