linux-kernel - Re: zram/zsmalloc issues in very low memory conditions

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Date:	Thu, 31 Oct 2013 16:34:03 -0700
From:	Olav Haugan <ohaugan@...eaurora.org>
To:	Luigi Semenzato <semenzato@...gle.com>
CC:	Bob Liu <bob.liu@...cle.com>, Minchan Kim <minchan@...nel.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: zram/zsmalloc issues in very low memory conditions

Hi Luigi,

On 10/24/2013 6:12 PM, Luigi Semenzato wrote:
> On Thu, Oct 24, 2013 at 5:35 PM, Olav Haugan <ohaugan@...eaurora.org> wrote:
>> Hi Bob, Luigi,
>>
>> On 10/23/2013 5:55 PM, Bob Liu wrote:
>>>
>>> On 10/24/2013 05:51 AM, Olav Haugan wrote:
>>
>>> By the way, could you take a try with zswap? Which can write pages to
>>> real swap device if compressed pool is full.
>>
>> zswap might not be feasible in all cases if you only have flash as
>> backing storage.
> 
> Zswap can be configured to run without a backing storage.
> 

I was under the impression that zswap requires a backing storage. Can
you elaborate on how to configure zswap to not need a backing storage?


Olav Haugan

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