Do we need an opt-in for file systems use of hw atomic writes?

[Christoph Hellwig]

On Mon, Jul 14, 2025 at 09:04:00AM -0700, Darrick J. Wong wrote:
> Do you want to handle it the same way as we do discard-zeroes-data and
> have a quirks list of devices we trust?  Though I can hardly talk,
> knowing the severe limitations of allowlists vs. product managers trying
> to win benchmarks with custom firmware. :(

I don't think whitelists are a good idea.  I'd expect the admin to
opt into it.