Re: shmget with SHM_HUGETLB flag: Operation not permitted

[Wim Coekaerts <wim.coekaerts@oracle.com>]

On Thu, Feb 26, 2004 at 04:06:16PM -0800, Chris Wright wrote:
> * Jochen Roemling (jochen@roemling.net) wrote:
> > Chris Wright wrote:
<snip> 
> >                  if (!capable(CAP_IPC_LOCK)) {
> >                          err = -EPERM;
> >                          goto out;
> >                  }
> > 
> > There is nothing around that says: "Allow this only without HUGETLB".
> > Are you sure that this capability is my problem?
> 
> Yes, take a look at fs/hugetlbfs/inode.c::hugetlb_zero_setup()

Rik had a patch in rhel3 for nonroot mlock() which made this all work,
I will post a patch for 2.6. from what I understand it's very useful for
the gpg folks to have, eg wide audience for this patch. just need to do
a bit more testing and having Rik review it then ll send it out (or
maybe he feels like getting shot and he will ;)

Wim