[git pull] vfs.git part 1

[Al Viro <viro@ZenIV.linux.org.uk>]

Assorted cleanups and fixes.  Probably the most interesting part long-term
is ->d_init() - that will have a bunch of followups in (at least) ceph
and lustre, but we'll need to sort the barrier-related rules before it
can get used for really non-trivial stuff.  Another fun thing is the merge
of ->d_iput() callers (dentry_iput() and dentry_unlink_inode()) and
a bunch of ->d_compare() ones (all except the one in __d_lookup_lru()).

The only conflict is in fs/nfs/dir.c; I can push a merge candidate, but
the conflict is really trivial...

The following changes since commit e06b933e6ded42384164d28a2060b7f89243b895:

  namespace: update event counter when umounting a deleted dentry (2016-06-30 23:28:30 -0400)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.misc

for you to fetch changes up to 47be61845c775643f1aa4d2a54343549f943c94c:

  fs/dcache.c: avoid soft-lockup in dput() (2016-07-24 16:37:16 -0400)

----------------------------------------------------------------
Al Viro (21):
      undo "fs: allow d_instantiate to be called with negative parent dentry"
      drbd: ->d_parent is never NULL or negative
      securityfs: ->d_parent is never NULL or negative
      tracefs: ->d_parent is never NULL or negative...
      orangefs: don't open-code %pd2
      nfs_lookup(): remove debris left over from old sillyunlink exclusion
      debugfs: ->d_parent is never NULL or negative
      9p: new helper - v9fs_parent_fid()
      trim fsnotify hooks a bit
      file_inode(f)->i_mapping is f->f_mapping
      missed comment updates from ->direct_IO() prototype change
      orangefs: constify inode_operations
      ufs: get rid of redundant checks
      drop redundant ->owner initializations
      binfmt_misc: ->s_root is not going anywhere
      unify dentry_iput() and dentry_unlink_inode()
      Merge branch 'for-linus' into work.misc
      new helper: d_same_name()
      Merge branch 'd_real' of git://git.kernel.org/.../mszeredi/vfs into work.misc
      bdev: get rid of ->bd_inodes
      Merge branch 'test.d_iput' into work.misc

He Kuang (1):
      dentry_cmp(): use lockless_dereference() instead of smp_read_barrier_depends()

Matthew Wilcox (1):
      Remove last traces of ->sync_page

Miklos Szeredi (4):
      vfs: merge .d_select_inode() into .d_real()
      vfs: document ->d_real()
      vfs: clean up documentation
      vfs: new d_init method

Oleg Drokin (1):
      vfs: Update lookup_dcache() comment

Wei Fang (1):
      fs/dcache.c: avoid soft-lockup in dput()

 Documentation/block/biodoc.txt        |   3 +-
 Documentation/filesystems/Locking     |  18 ++-
 Documentation/filesystems/vfs.txt     |  51 +++++----
 drivers/block/drbd/drbd_debugfs.c     |   4 -
 drivers/gpu/drm/armada/armada_gem.c   |   4 +-
 drivers/gpu/drm/drm_gem.c             |   2 +-
 drivers/gpu/drm/etnaviv/etnaviv_gem.c |   2 +-
 drivers/gpu/drm/i915/i915_gem.c       |  10 +-
 drivers/gpu/drm/omapdrm/omap_gem.c    |   2 +-
 drivers/gpu/drm/ttm/ttm_tt.c          |   4 +-
 fs/9p/fid.h                           |   4 +
 fs/9p/vfs_addr.c                      |   1 -
 fs/9p/vfs_inode.c                     |  10 +-
 fs/9p/vfs_inode_dotl.c                |  16 +--
 fs/binfmt_misc.c                      |  12 +-
 fs/block_dev.c                        |  16 +--
 fs/cachefiles/proc.c                  |   1 -
 fs/cifs/cifs_debug.c                  |   7 --
 fs/coda/pioctl.c                      |   1 -
 fs/dcache.c                           | 208 +++++++++++-----------------------
 fs/debugfs/inode.c                    |   7 --
 fs/ext4/mballoc.c                     |   1 -
 fs/ext4/sysfs.c                       |   1 -
 fs/f2fs/super.c                       |   1 -
 fs/fscache/histogram.c                |   1 -
 fs/fscache/object-list.c              |   1 -
 fs/fscache/stats.c                    |   1 -
 fs/hfs/inode.c                        |   2 +-
 fs/hfsplus/inode.c                    |   2 +-
 fs/isofs/compress.c                   |   1 -
 fs/jfs/jfs_debug.c                    |   1 -
 fs/jfs/jfs_logmgr.c                   |   1 -
 fs/jfs/jfs_metapage.c                 |   1 -
 fs/jfs/jfs_txnmgr.c                   |   2 -
 fs/jfs/jfs_xtree.c                    |   1 -
 fs/lockd/procfs.c                     |   1 -
 fs/namei.c                            |   7 +-
 fs/nfs/client.c                       |   2 -
 fs/nfs/dir.c                          |  11 +-
 fs/nfs/direct.c                       |   4 +-
 fs/nfsd/nfsctl.c                      |   3 -
 fs/nfsd/stats.c                       |   1 -
 fs/ntfs/inode.c                       |   2 +-
 fs/ocfs2/aops.c                       |   2 +-
 fs/open.c                             |   8 +-
 fs/orangefs/inode.c                   |   2 +-
 fs/orangefs/namei.c                   |  10 +-
 fs/orangefs/orangefs-kernel.h         |   6 +-
 fs/orangefs/symlink.c                 |   2 +-
 fs/overlayfs/inode.c                  |  31 ++---
 fs/overlayfs/overlayfs.h              |   2 +-
 fs/overlayfs/super.c                  |  20 +++-
 fs/tracefs/inode.c                    |   7 --
 fs/ufs/dir.c                          |  17 +--
 fs/xfs/xfs_stats.c                    |   1 -
 include/linux/dcache.h                |  41 +++----
 include/linux/fs.h                    |   8 +-
 include/linux/fsnotify.h              |  12 --
 include/linux/fsnotify_backend.h      |  20 +---
 mm/hugetlb.c                          |   2 +-
 security/inode.c                      |  15 +--
 61 files changed, 224 insertions(+), 413 deletions(-)