On Thu, Mar 21, 2024 at 02:36:47PM -0700, Christoph Hellwig wrote: > On Wed, Mar 20, 2024 at 04:58:24PM +0100, David Sterba wrote: > > It is a bug in the test, it should have been xfs specific and never > > promoted to generic/ and not affect btrfs unless explained how > > in the first place. > > Well, the concept that reflinks are reasonably fast and are not live > locked by ongoing I/O seems pretty natural. But I guess we can't > just asusme quality of implementation everywhere, and do an opt-in > like _require_non_sucky_reflink. Either way we need to document > the assumptions and not add a magic exclude for a single fs. generic/733 runs just fine on bcachefs, sounds like btrfs folks just need to fix their filesystem