[git pull] vfs.git fixes

[Al Viro]

	Tmpfs readdir throughput regression fix (this cycle) + some -stable
fodder all over the place.  One missing bit is Miklos' tonight locks.c fix -
NFS folks had already grabbed that one by the time I woke up ;-)

The following changes since commit e7d6ef9790bc281f5c29d0132b68031248523fe8:

  fix idiotic braino in d_alloc_parallel() (2016-06-20 10:07:42 -0400)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-linus

for you to fetch changes up to e06b933e6ded42384164d28a2060b7f89243b895:

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

----------------------------------------------------------------
Al Viro (4):
      dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock
      libfs.c: new helper - next_positive()
      lockless next_positive()
      ceph: fix d_obtain_alias() misuses

Andrey Ulanov (1):
      namespace: update event counter when umounting a deleted dentry

Miklos Szeredi (1):
      9p: use file_dentry()

 fs/9p/vfs_file.c |   6 +--
 fs/ceph/export.c |  10 ++---
 fs/libfs.c       | 109 ++++++++++++++++++++++++++++++++++++-------------------
 fs/namespace.c   |   1 +
 4 files changed, 78 insertions(+), 48 deletions(-)