linux-kernel - Re: [PATCH 0/3] zram: generic RAM based compressed R/W block devices

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Date:	Thu, 17 Jun 2010 07:09:01 +0530
From:	Nitin Gupta <ngupta@...are.org>
To:	Greg KH <greg@...ah.com>
CC:	Pekka Enberg <penberg@...helsinki.fi>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Cyp <cyp561@...il.com>, driverdev <devel@...verdev.osuosl.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] zram: generic RAM based compressed R/W block devices

On 06/17/2010 12:13 AM, Greg KH wrote:
> On Wed, Jun 16, 2010 at 07:44:20AM +0530, Nitin Gupta wrote:
>> Hi Greg,
>>
>> On 05/28/2010 09:56 PM, Greg KH wrote:
>>> On Fri, May 28, 2010 at 09:38:53PM +0530, Nitin Gupta wrote:
>>>>
>>>> On 05/24/2010 07:48 PM, Nitin Gupta wrote:
>>>>> Creates RAM based block devices: /dev/zramX (X = 0, 1, ...).
>>>>> Pages written to these disks are compressed and stored in memory
>>>>> itself. These disks allow very fast I/O and compression provides
>>>>> good amounts of memory savings.
>>>>>
>>>>> This is enhancement over existing ramzswap driver which creates
>>>>> virtual block devices (/dev/ramzswapX) which could be used only
>>>>> as swap disks.
>>>>>
>>>>> Now, with the ability to handle any kind of I/O request, zram
>>>>> devices have lot more use cases:
>>>>>  - /tmp storage
>>>>>  - various caches under /var
>>>>>  - swap disks
>>>>>  - maybe even more! :)
>>>>>
>>>>> Performance numbers can be found at:
>>>>> http://code.google.com/p/compcache/wiki/zramperf
>>>>>
>>>>
>>>> Any reviews/comments, please?
>>>
>>> We are all busy with the .35-rc1 merge work at the moment, sorry.
>>>
>>
>> Can you please apply these patches to linux-next?
> 
> Yes, I'm working on it, I should get to it by the end of this week.
> 
>> or maybe for .35-rc3/rc4 too?
> 
> No, this is not a bugfix, why would it be acceptable for the .35 kernel
> release?
> 

Since its a staging driver, I thought any kind of changes can be pulled in
mainline too. Maybe I still don't understand how -staging works :)

Anyways, thanks for taking it in linux-next.

Nitin
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