linux-kernel - Re: scheduling while atomic in z3fold

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Message-ID: <05121515e73891ceb9e5caf64b6111fc8ff43fab.camel@gmx.de>
Date:   Mon, 30 Nov 2020 16:01:11 +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 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.

	-Mike