[GIT PULL] XArray for 5.0-rc3

[Matthew Wilcox <willy@infradead.org>]

The following changes since commit 3bd6e94bec122a951d462c239b47954cf5f36e33:

  arch: restore generic-y += shmparam.h for some architectures (2019-01-06 18:16:11 -0800)

are available in the Git repository at:

  git://git.infradead.org/users/willy/linux-dax.git tags/xarray-5.0-rc3

for you to fetch changes up to edcddd4c879af48ec922d680b2d56834c085683b:

  XArray: Fix an arithmetic error in xa_is_err (2019-01-17 07:19:42 -0500)

----------------------------------------------------------------
XArray updates for 5.0-rc3

Fix some oversights in the XArray porcelain API:
 - support for m68k's two-byte aligned pointers
 - reserving entries using xa_insert()
 - missing xa_insert_bh() and xa_insert_irq() functions
 - simplify using xa_for_each()
 - use lockdep correctly
 - a few other minor fixes and improvements

----------------------------------------------------------------
Cyrill Gorcunov (1):
      XArray: Fix typo in comment

Dan Carpenter (1):
      XArray: Fix an arithmetic error in xa_is_err

Matthew Wilcox (6):
      XArray tests: Add RCU locking
      XArray: Turn xa_init_flags into a static inline
      XArray: Change xa_for_each iterator
      XArray: Permit storing 2-byte-aligned pointers
      XArray: Honour reserved entries in xa_insert
      XArray tests: Check mark 2 gets squashed

 Documentation/core-api/xarray.rst |  15 ++-
 include/linux/xarray.h            | 227 ++++++++++++++++++++++++++++----------
 lib/test_xarray.c                 |  57 ++++++++--
 lib/xarray.c                      |  92 ++++++++-------
 4 files changed, 278 insertions(+), 113 deletions(-)