[PATCH 4.9 0/6] Convert isec->lock into a spinlock fixing deadlock on GFS2

[Alexander Grund <theflamefire89@gmail.com>]

This patchset backports basically upstream commit 9287aed2
(selinux: Convert isec->lock into a spinlock). This
"fixes a deadlock between selinux and GFS2 when GFS2 invalidates a security label",
see the original discussion at
https://lore.kernel.org/all/1478812710-17190-2-git-send-email-agruenba@redhat.com/T/
It also contains the follow-up fixes to make this correct.

The first 3 commits (by Andreas) are valuable on their own too as
they fix a documentation bug, avoid partially initialized structs
and (slightly) improve performance while making the code cleaner.

Andreas Gruenbacher (4):
  selinux: Minor cleanups
  proc: Pass file mode to proc_pid_make_inode
  selinux: Clean up initialization of isec->sclass
  selinux: Convert isec->lock into a spinlock

Paul Moore (1):
  selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling

Tianyue Ren (1):
  selinux: fix error initialization in inode_doinit_with_dentry()

 fs/proc/base.c                    |  23 +++---
 fs/proc/fd.c                      |   6 +-
 fs/proc/internal.h                |   2 +-
 fs/proc/namespaces.c              |   3 +-
 security/selinux/hooks.c          | 123 +++++++++++++++++++-----------
 security/selinux/include/objsec.h |   5 +-
 security/selinux/selinuxfs.c      |   4 +-
 7 files changed, 96 insertions(+), 70 deletions(-)

-- 
2.25.1