linux-kernel - Re: [PATCH 1/3] zram: force disksize setting before using zram

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Date:	Thu, 17 Jan 2013 16:42:19 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Minchan Kim <minchan@...nel.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Nitin Gupta <ngupta@...are.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Konrad Rzeszutek Wilk <konrad@...nok.org>,
	Jerome Marchand <jmarchan@...hat.com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 1/3] zram: force disksize setting before using zram

On Thu, Jan 17, 2013 at 11:12:47AM +0900, Minchan Kim wrote:
> Now zram document syas "set disksize is optional"
> but partly it's wrong. When you try to use zram firstly after
> booting, you must set disksize, otherwise zram can't work because
> zram gendisk's size is 0. But once you do it, you can use zram freely
> after reset because reset doesn't reset to zero paradoxically.
> So in this time, disksize setting is optional.:(
> It's inconsitent for user behavior and not straightforward.
> 
> This patch forces always setting disksize firstly before using zram.
> Yes. It changes current behavior so someone could complain when
> he upgrades zram. Apparently it could be a problem if zram is mainline
> but it still lives in staging so behavior could be changed for right
> way to go. Let them excuse.

I don't know about changing this behavior.  I need some acks from some
of the other zram developers before I can take this, or any of the other
patches in this series.

thanks,

greg k-h
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