[PATCHv2] nvmet: lift blocksize restriction to 64k

[Christoph Hellwig]

On Fri, Feb 20, 2026 at 04:12:59PM +0100, Hannes Reinecke wrote:
> With commit 47dd67532303 ("block/bdev: lift block size restrictions to 64k")
> we can now support up to 64k block sizes, so lift the restriction on 4k for
> file-backed namespaces.

Still not sure this is a great idea by default.  Yes, modern Linux supports
64k sector sizes, but even then just for a few file systems.  And this
changes existing setups, which will now break when upgrading the kernel.

This needs an opt-in.