[GIT PULL] pidfd fixes

[Christian Brauner <christian@brauner.io>]

Hi Linus,

This makes setting the exit_state in exit_notify() consistent after fixing
the pidfd polling race pre-rc1. Related to the race fix, this adds a
WARN_ON() to do_notify_pidfd() to catch any future exit_state races.
Last, this removes an obsolete comment from the pidfd tests.

The following changes since commit 609488bc979f99f805f34e9a32c1e3b71179d10b:

  Linux 5.3-rc2 (2019-07-28 12:47:02 -0700)

are available in the Git repository at:

  git@gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux tags/for-linus-20190730

for you to fetch changes up to 30b692d3b390c6fe78a5064be0c4bbd44a41be59:

  exit: make setting exit_state consistent (2019-07-30 19:57:14 +0200)

Please consider pulling from the signed for-linus-20190730 tag.

Thanks!
Christian

----------------------------------------------------------------
for-linus-20190730

----------------------------------------------------------------
Christian Brauner (2):
      pidfd: remove obsolete comments from test
      exit: make setting exit_state consistent

Joel Fernandes (Google) (1):
      pidfd: Add warning if exit_state is 0 during notification

 kernel/exit.c                              | 5 +++--
 kernel/signal.c                            | 1 +
 tools/testing/selftests/pidfd/pidfd_test.c | 6 +-----
 3 files changed, 5 insertions(+), 7 deletions(-)