Re: [PATCH] mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers

[Andrew Morton]

On Thu,  3 Mar 2016 11:02:51 +0100 Jan Stancek <jstancek@xxxxxxxxxx> wrote:

> Replace ENOTSUPP with EOPNOTSUPP. If hugepages are not supported,
> this value is propagated to userspace. EOPNOTSUPP is part of uapi
> and is widely supported by libc libraries.

hm, what is the actual user-visible effect of this change?  Does it fix
some misbehaviour?