linux-kernel - Re: Zram writeback feature unstable with heavy swap utilization

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Message-ID: <ae04a49d-7d28-2717-daaf-369668ffe0cc@contabo.de>
Date:   Thu, 26 Jul 2018 08:34:36 +0200
From:   Tino Lehnig <tino.lehnig@...tabo.de>
To:     Minchan Kim <minchan@...nel.org>
Cc:     ngupta@...are.org, linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Zram writeback feature unstable with heavy swap utilization -
 BUG: Bad page state in process...

On 07/26/2018 08:21 AM, Minchan Kim wrote:
> That means you could reproduce it without writeback feature?
> If so, it would be more reasoanble to check [0bcac06f27d75, skip swapcache for swapin of synchronous device]

No, the bug only occurs with a backing device. The writeback feature is 
enabled in the default Ubuntu kernel configuration.

-- 
Kind regards,

Tino Lehnig