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Subject: Re: Choosing z3fold allocator in zswap gives WARNING: CPU: 0 PID:
 5140 at mm/zswap.c:503 __zswap_pool_current+0x56/0x60
References: <2f8a65db-e5a8-75f0-8c08-daa41e1cd3ba@mejor.pl>
 <CAM4kBBLsK99PXaCa8Po3huOyGx+qHTrq3Vgsh+FoqqRaMLv-vQ@mail.gmail.com>
From: =?UTF-8?Q?Marcin_Miros=c5=82aw?= <marcin@mejor.pl>
Message-ID: <15aabbf1-4036-cd15-a593-3ebfe429e948@mejor.pl>
Date: Mon, 1 Aug 2016 11:21:11 +0200
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Sender: owner-linux-mm@kvack.org
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To: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Linux-MM <linux-mm@kvack.org>

W dniu 01.08.2016 o 11:08, Vitaly Wool pisze:
> Hi Marcin,
> 
> Den 1 aug. 2016 11:04 fm skrev "Marcin MirosA?aw" <marcin@mejor.pl
> <mailto:marcin@mejor.pl>>:
>>
>> Hi!
>> I'm testing kernel-git
>> (git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> <http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git> , at
>> 07f00f06ba9a5533d6650d46d3e938f6cbeee97e ) because I noticed strange OOM
>> behavior in kernel 4.7.0. As for now I can't reproduce problems with
>> OOM, probably it's fixed now.
>> But now I wanted to try z3fold with zswap. When I did `echo z3fold >
>> /sys/module/zswap/parameters/zpool` I got trace from dmesg:
> 
> Could you please give more info on how to reproduce this?

Nothing special. Just rebooted server (vm on kvm), started services and
issued `echo z3fold > ...`

Marcin

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