Message-ID: <5272E8EB.5030900@codeaurora.org>
Date: Thu, 31 Oct 2013 16:34:03 -0700
From: Olav Haugan <ohaugan@codeaurora.org>
Organization: Qualcomm Innovation Center, Inc.
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To: Luigi Semenzato <semenzato@google.com>
CC: Bob Liu <bob.liu@oracle.com>, Minchan Kim <minchan@kernel.org>,
        Seth Jennings <sjenning@linux.vnet.ibm.com>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: zram/zsmalloc issues in very low memory conditions
References: <526844E6.1080307@codeaurora.org> <52686FF4.5000303@oracle.com> <5269BCCC.6090509@codeaurora.org> <CAA25o9R_jAZyGFU3xYVjsxCCiBwiEC4gRw+JX6WG9X7G-E3LNw@mail.gmail.com>
In-Reply-To: <CAA25o9R_jAZyGFU3xYVjsxCCiBwiEC4gRw+JX6WG9X7G-E3LNw@mail.gmail.com>
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Hi Luigi,

On 10/24/2013 6:12 PM, Luigi Semenzato wrote:
> On Thu, Oct 24, 2013 at 5:35 PM, Olav Haugan <ohaugan@codeaurora.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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