linux-kernel - Warnings about filesystem timestamp support until 2038

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Date:   Wed, 26 Aug 2020 12:35:28 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Deepa Dinamani <deepa.kernel@...il.com>
Cc:     linux-fsdevel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        it+linux-fsdevel@...gen.mpg.de
Subject: Warnings about filesystem timestamp support until 2038

Dear Deepa,

Commit v5.3-rc6-4-gf8b92ba67c5d3 (mount: Add mount warning for impending 
timestamp expiry) [1] results in a lot of warnings on our systems.

     xfs filesystem being mounted at /amd/salvadorthegunzerker/0 
supports timestamps until 2038 (0x7fffffff)

Unfortunately, I am missing the motivation for adding the warning in the 
commit message. Why is it warned about and what should users do about 
it? In our case, what should XFS and ext4 filesystem users do?

Kind regards,

Paul

[1]: 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f8b92ba67c5d3a9e9468320078a97d950a3e748b