On Tue, Jan 12, 2021 at 10:43 AM Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > The following semantics would make a ton more sense, since getting a > v2 would indicate that rootid is unknown: > > - if cap is v2 convert to v3 with zero rootid > - after this, check if rootid needs to be translated, if not return v3 > - if yes, try to translate to current ns, if succeeds return translated v3 > - if not mappable, return v2 > > Hmm? Actually, it would make even more sense to simply skip unconvertible caps and return -ENODATA. In fact that's what I thought would happen until I looked at the -EOPNOTSUPP fallback code in vfs_getxattr(). Serge, do you remember what was the reason for the unconverted fallback? Thanks, Miklos