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

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Message-ID: <54eddd07-9fe5-0a83-0d2f-556726f64516@contabo.de>
Date:   Fri, 27 Jul 2018 14:13:57 +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 07/27/2018 02:05 PM, Minchan Kim wrote:
> And bad page is always with writeback enable?
> 
> writeback enable means "echo "some dev" > /sys/block/zram0/backing_dev,
> not just enable CONFIG_ZRAM_WRITEBACK.

Yes, the bug only appears when backing_dev is set.

-- 
Kind regards,

Tino Lehnig