Re: [PATCH] vfs: add fchmodat2 syscall

[Al Viro]

On Thu, Sep 10, 2020 at 10:23:37AM -0400, Rich Felker wrote:

> It was determined (see glibc issue #14578 and commit a492b1e5ef) that,
> on some filesystems, performing chmod on the link itself produces a
> change in the inode's access mode, but returns an EOPNOTSUPP error.

Which filesystem types are those?