linux-kernel - Re: [PATCH] staging: zsmalloc: Ensure handle is never 0 on success

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Date:	Thu, 7 Nov 2013 18:02:21 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Luigi Semenzato <semenzato@...gle.com>
Cc:	Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>, lliubbo@...il.com,
	jmarchan@...hat.com, Mel Gorman <mgorman@...e.de>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: zsmalloc: Ensure handle is never 0 on success

On Thu, Nov 07, 2013 at 09:06:26AM -0800, Luigi Semenzato wrote:
> If I may add my usual 2c (and some news):
> 
> zram is used by default on all Chrome OS devices.  I can't say how
> many devices, but it's not a small number, google it, and it's an
> important market, low-end laptops for education and the less affluent.
>  It has been available experimentally for well over a year.
> 
> Android 4.4 KitKat is also using zram, to better support devices with
> less than 1 MB RAM.  (That's the news.)
> 
> When comparing the relative advantages of the two subsystems (zram and
> zswap), let's not forget that considerable effort goes into in tuning
> and bug fixing for specific use cases---possibly even more than the
> initial development effort.  Zram has not just been sitting around in
> drivers/staging, it's in serious use.
> 
> If we were to judge systems based merely on theoretical technical
> merit, then we should consider switching en masse to FreeBSD.  (I said
> we should *consider* :).
> 
> I am very familiar with the limitations of zram, but it works well and
> I think it would be wise to keep supporting it.  Besides, it's small
> and AFAICT it interfaces cleanly with the rest of the system, so I
> don't see what the big deal is.

Then please help with getting it merged properly, and out of staging.

thanks,

greg k-h
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