Re: [PATCH v4 1/2] hugetlb: use f_mode & FMODE_HUGETLBFS to identify hugetlbfs files

[Matthew Wilcox]

On Sat, Jun 13, 2020 at 09:53:24AM +0300, Amir Goldstein wrote:
> Currently, the only in-tree stacking fs are overlayfs and ecryptfs, but there
> are some out of tree implementations as well (shiftfs).
> So you may only take that option if you do not care about the combination
> of hugetlbfs with any of the above.

I could see shiftfs being interesting, maybe.  I don't really see
the usecase for layering overlayfs or ecryptfs on top of a ram-based
filesystem.