linux-kernel - Re: scheduling while atomic in z3fold

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Message-ID: <a2490e30dd149f1b987333797526b79614503f30.camel@gmx.de>
Date:   Mon, 30 Nov 2020 16:03:53 +0100
From:   Mike Galbraith <efault@....de>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Oleksandr Natalenko <oleksandr@...alenko.name>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-rt-users@...r.kernel.org
Subject: Re: scheduling while atomic in z3fold

On Mon, 2020-11-30 at 16:01 +0100, Mike Galbraith wrote:
> On Mon, 2020-11-30 at 15:52 +0100, Sebastian Andrzej Siewior wrote:
> > How do you test this? I triggered a few oom-killer and I have here git
> > gc running for a few hours now… Everything is fine.
>
> In an LTP install, ./runltp -f mm.  Shortly after box starts swapping
> insanely, it explodes quite reliably here with either z3fold or
> zsmalloc.. but not with zbud.

My config attached in case it's relevant.

Download attachment "config.gz" of type "application/gzip" (50792 bytes)