[GIT PULL] percpu fixes for v4.16-rc6

[Tejun Heo]

Hello, Linus.

Late percpu pull request for v4.16-rc6.

* percpu allocator pool replenishing no longer triggers OOM or warning
  messages.  Also, the alloc interface now understands __GFP_NORETRY
  and __GFP_NOWARN.  This is to allow avoiding OOMs from userland
  triggered actions like bpf map creation.  Also added cond_resched()
  in alloc loop.

* perpcu allocation now can be interrupted by kill sigs to avoid
  deadlocking OOM killer.

* Added Dennis Zhou as a co-maintainer.  He has rewritten the area map
  allocator, understands most of the code base and has been responsive
  for all bug reports.

Thanks.

The following changes since commit 7928b2cbe55b2a410a0f5c1f154610059c57b1b2:

  Linux 4.16-rc1 (2018-02-11 15:04:29 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-4.16-fixes

for you to fetch changes up to b3a5d111994450909158929560906f2c1c6c1d85:

  percpu_ref: Update doc to dissuade users from depending on internal RCU grace periods (2018-03-19 10:09:44 -0700)

----------------------------------------------------------------
Dennis Zhou (3):
      percpu: match chunk allocator declarations with definitions
      percpu: add __GFP_NORETRY semantics to the percpu balancing path
      percpu: allow select gfp to be passed to underlying allocators

Eric Dumazet (1):
      percpu: add a schedule point in pcpu_balance_workfn()

Kirill Tkhai (1):
      mm: Allow to kill tasks doing pcpu_alloc() and waiting for pcpu_balance_workfn()

Tejun Heo (3):
      percpu: add Dennis Zhou as a percpu co-maintainer
      percpu: include linux/sched.h for cond_resched()
      percpu_ref: Update doc to dissuade users from depending on internal RCU grace periods

 MAINTAINERS                     |  1 +
 include/linux/percpu-refcount.h | 18 +++++++----
 lib/percpu-refcount.c           |  2 ++
 mm/percpu-km.c                  |  8 ++---
 mm/percpu-vm.c                  | 18 ++++++-----
 mm/percpu.c                     | 67 +++++++++++++++++++++++++++--------------
 6 files changed, 74 insertions(+), 40 deletions(-)