On Tue, Mar 21, 2017 at 01:37:04PM -0400, J. Bruce Fields wrote:
> On Tue, Mar 21, 2017 at 01:23:24PM -0400, Jeff Layton wrote:
> > On Tue, 2017-03-21 at 12:30 -0400, J. Bruce Fields wrote:
> > > - NFS doesn't actually require that it increases, but I think it
> > > should. I assume 64 bits means we don't need a discussion of
> > > wraparound.
> >
> > I thought NFS spec required that you be able to recognize old change
> > attributes so that they can be discarded. I could be wrong here though.
> > I'd have to go back and look through the spec to be sure.
>
> https://tools.ietf.org/html/rfc7862#section-10
So, I'm suggesting we implement this one:
NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: The change attribute value
MUST monotonically increase for every atomic change to the file
attributes, data, or directory contents.
It may be a slight lie--after your patches we wouldn't actually increase
"for every atomic change". I think that's OK.
--b.
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