Re: [PATCH v2 3/5] generic/746: skip on zoned btrfs

On Wed, Aug 19, 2026 at 03:16:03PM +0200, Johannes Thumshirn wrote:
> The test relies on loop device discards punching holes in the backing
> image file (holes are then detected via fiemap on the backing file).
> Zoned btrfs does not support fallocate/punch hole, so fstrim on the
> loop device cannot free space in the backing file and the test cannot
> work.
> 
> Skip the test on filesystems that do not support "fpunch"

Shouldn't _require_fstrim return false for zoned btrfs given that
trimming makes zero sense?  Otherwise once zoned btrfs at some point
supports fpunch (which it really should), this starts breaking again.