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Date:   Fri, 19 Jun 2020 06:17:13 -0700
From:   Christoph Hellwig <>
To:     Dave Chinner <>
Cc:     Masayoshi Mizuma <>,
        "J. Bruce Fields" <>,
        Eric Sandeen <>,
        "Darrick J. Wong" <>,
        Christoph Hellwig <>,
        Theodore Ts'o <>,
        Andreas Dilger <>,
        Alexander Viro <>,
        Masayoshi Mizuma <>,,,
        linux-xfs <>
Subject: Re: [PATCH] fs: i_version mntopt gets visible through /proc/mounts

On Fri, Jun 19, 2020 at 08:39:48AM +1000, Dave Chinner wrote:
> This will prevent SB_I_VERSION from being turned off at all. That
> will break existing filesystems that allow SB_I_VERSION to be turned
> off on remount, such as ext4.
> The manipulations here need to be in the filesystem specific code;
> we screwed this one up so badly there is no "one size fits all"
> behaviour that we can implement in the generic code...

Yes.  SB_I_VERSION should never be set by common code.

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