Re: [PATCH v8 0/5] fs: multigrain timestamps for XFS's change_cookie

[NeilBrown]

On Sun, 24 Sep 2023, Christian Brauner wrote:
> > My initial goal was to implement multigrain timestamps on most major
> > filesystems, so we could present them to userland, and use them for
> > NFSv3, etc.
> 
> If there's no clear users and workloads depending on this other than for
> the sake of NFS then we shouldn't expose this to userspace. We've tried
> this and I'm not convinced we're getting anything other than regressions
> out of it. Keep it internal and confined to the filesystem that actually
> needs this.
> 

Some NFS servers run in userspace, and they would a "clear user" of this
functionality.

NeilBrown