Tomoyo build warnings

[Tetsuo Handa]

On 2019/05/09 7:54, James Morris wrote:
> I'm seeing these during a kernel build in my tree:

Well, it seems that clang-4 and gcc-9 got this new warning, and
Linus Torvalds recently silenced this warning...

  commit 6f303d60534c46aa1a239f29c321f95c83dda748
  Author: Linus Torvalds <torvalds at linux-foundation.org>
  Date:   Wed May 1 11:05:41 2019 -0700

      gcc-9: silence 'address-of-packed-member' warning

      We already did this for clang, but now gcc has that warning too.  Yes,
      yes, the address may be unaligned.  And that's kind of the point.

      Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>

Since "struct list_head" consists of aligned two pointers, I wonder
how a member next to "struct list_head" can fail to be aligned...

  struct tomoyo_shared_acl_head {
      struct list_head list;
      atomic_t users;
  } __packed;

But since this structure is not visible from userspace, I can accept
dropping __packed and wasting a few bytes if that commit doesn't go upstream.