linux-ext4 - Re: ext2/zram issue [was: Linux 5.19]

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Message-ID: <YvIluTU6oFDpwQwK@google.com>
Date:   Tue, 9 Aug 2022 18:15:37 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Lukas Czerner <lczerner@...hat.com>
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        minchan@...nel.org, ngupta@...are.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Jan Kara <jack@...e.com>, Ted Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: ext2/zram issue [was: Linux 5.19]

On (22/08/09 11:12), Lukas Czerner wrote:
> Hi Jiri,
> 
> I've tried a quick xfstests run on ext2 on zram and I can't see any
> issues like this so far. I will run a full test and report back in case
> there is anything obvious.

AFAICT this should be visible only when we are under memory pressure,
so that direct reclaim from zs_malloc handle allocation call makes a
difference.