Hello, Linus.

percpu memory changes for v4.9-rc1.

* Nick improved generic implementations of percpu operations which
  modify the variable and return so that they calculate the physical
  address only once.

* percpu_ref percpu <-> atomic mode switching improvements.  The
  patchset was originally posted about a year ago but fell through the

* Misc non-critical fixes.


The following changes since commit 81abf2525827b29839a78fd55ab0699f033c41a5:

  Merge tag 'lkdtm-v4.8-rc1' of 
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux (2016-08-08 15:39:24 

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-4.9

for you to fetch changes up to 9b7396624a7b503220d85428654634b60762f2b0:

  mm/percpu.c: fix potential memory leakage for pcpu_embed_first_chunk() 
(2016-10-05 11:52:55 -0400)

Lance Richardson (1):
      percpu: eliminate two sparse warnings

Nicholas Piggin (1):
      percpu: improve generic percpu modify-return implementation

Roman Pen (1):
      percpu-refcount: init ->confirm_switch member properly

Tejun Heo (5):
      percpu_ref: remove unnecessary RCU grace period for staggered atomic 
switching confirmation
      percpu_ref: reorganize __percpu_ref_switch_to_atomic() and relocate 
      percpu_ref: unify staggered atomic switching wait behavior
      percpu_ref: restructure operation mode switching
      percpu_ref: allow operation mode switching operations to be called 

zijun_hu (2):
      mm/percpu.c: correct max_distance calculation for pcpu_embed_first_chunk()
      mm/percpu.c: fix potential memory leakage for pcpu_embed_first_chunk()

 arch/x86/include/asm/percpu.h |   5 +-
 include/asm-generic/percpu.h  |  53 +++++++------
 lib/percpu-refcount.c         | 169 ++++++++++++++++++++++++------------------
 mm/percpu.c                   |  38 +++++-----
 4 files changed, 148 insertions(+), 117 deletions(-)


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