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List:       linux-fsdevel
Subject:    Re: [PATCH 2/2] ntfs3: remove warning
From:       Linus Torvalds <torvalds () linux-foundation ! org>
Date:       2024-04-15 15:23:46
Message-ID: CAHk-=whPTEYv3F9tgvJf-OakOxyGw2jzRVD0BMkXmC5ANPj0YA () mail ! gmail ! com
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On Mon, 15 Apr 2024 at 07:16, Christian Brauner <brauner@kernel.org> wrote:
>
> (1) Since the ntfs3 driver is supposed to serve as a drop-in replacement
>     for the legacy ntfs driver we should to it the same way we did it
>     for ext3 and ext4 where ext4 registers itself also for the ext3
>     driver. In other words, we would register ntfs3 as ntfs3 filesystem
>     type and as legacy ntfs filesystem type.

I think that if just registering it under the same name solves the
immediate issue, that's the one we should just go for.

>     To make it fully compatible
>     we also need to make sure it's persistently mounted read-only.

My reaction to that is "only if it turns out we really need to".

It sounds unlikely that somebody has an old ntfs setup and then tries
to mount things rw which didn't use to work and things go sideways if
that then suddenly works.

But "unlikely" isn't "impossible", of course - it's just that I'd
suggest we actually wait for that report to happen and ask what the
heck they were doing and why they were doing that...

              Linus

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