On Wed, 13 Dec 2023, Dave Chinner wrote: > > What you are suggesting is that we now duplicate filehandle encoding > into every filesystem's statx() implementation. That's a bad > trade-off from a maintenance, testing and consistency POV because > now we end up with lots of individual, filehandle encoding > implementations in addition to the generic filehandle > infrastructure that we all have to test and validate. Not correct. We are suggesting an interface, not an implementation. Here you are proposing a suboptimal implementation, pointing out its weakness, and suggesting the has consequences for the interface proposal. Is that the strawman fallacy? vfs_getattr_nosec could, after calling i_op->getattr, check if STATX_HANDLE is set in request_mask but not in ->result_mask. If so it could call exportfs_encode_fh() and handle the result. No filesystem need to be changed. NeilBrown
