linux-kernel - Re: [PATCH v2 0/6] tmpfs: add the option to disable swap

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Date:   Sun, 19 Mar 2023 13:32:26 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     haoxin <xhao@...ux.alibaba.com>
Cc:     hughd@...gle.com, akpm@...ux-foundation.org, willy@...radead.org,
        brauner@...nel.org, linux-mm@...ck.org, p.raghav@...sung.com,
        da.gomez@...sung.com, a.manzanares@...sung.com, dave@...olabs.net,
        yosryahmed@...gle.com, keescook@...omium.org,
        patches@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] tmpfs: add the option to disable swap

On Tue, Mar 14, 2023 at 10:46:28AM +0800, haoxin wrote:
> All these series looks good to me and i do some test on my virtual machine
> it works well.
> 
> so please add Tested-by: Xin Hao <xhao@...ux.alibaba.com> .
> 
> just one question, if tmpfs pagecache occupies a large amount of memory, how
> can we ensure successful memory reclamation in case of memory shortage?

If you're disabling swap then you know the only thing you can do is
unmount if you want to help the VM, otherwise the pressure is just
greater for the VM.

  Luis