Merge branch 'for-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...

Pull percpu/for-3.15-fixes into percpu/for-3.16 to receive
0c36b390a546 ("percpu-refcount: fix usage of this_cpu_ops").

The merge doesn't produce any conflict but the automatic merge is
still incorrect because 4fb6e25049cb ("percpu-refcount: implement
percpu_ref_tryget()") added another use of __this_cpu_inc() which
should also be converted to this_cpu_ince().

This commit pulls in percpu/for-3.15-fixes and converts the newly
added __this_cpu_inc() to this_cpu_inc().

Signed-off-by: Tejun Heo <tj@kernel.org>

diff --cc include/linux/percpu-refcount.h
index dba35c4,0afb48f..5d8920e
--- 1/include/linux/percpu-refcount.h
--- 2/include/linux/percpu-refcount.h
+++ b/include/linux/percpu-refcount.h
@@@ -121,36 -121,6 +121,36 @@@ static inline void percpu_ref_get(struc
   * percpu_ref_tryget - try to increment a percpu refcount
   * @ref: percpu_ref to try-get
   *
-               __this_cpu_inc(*pcpu_count);
 + * Increment a percpu refcount unless its count already reached zero.
 + * Returns %true on success; %false on failure.
 + *
 + * The caller is responsible for ensuring that @ref stays accessible.
 + */
 +static inline bool percpu_ref_tryget(struct percpu_ref *ref)
 +{
 +      unsigned __percpu *pcpu_count;
 +      int ret = false;
 +
 +      rcu_read_lock_sched();
 +
 +      pcpu_count = ACCESS_ONCE(ref->pcpu_count);
 +
 +      if (likely(REF_STATUS(pcpu_count) == PCPU_REF_PTR)) {
++              this_cpu_inc(*pcpu_count);
 +              ret = true;
 +      } else {
 +              ret = atomic_inc_not_zero(&ref->count);
 +      }
 +
 +      rcu_read_unlock_sched();
 +
 +      return ret;
 +}
 +
 +/**
 + * percpu_ref_tryget_live - try to increment a live percpu refcount
 + * @ref: percpu_ref to try-get
 + *
   * Increment a percpu refcount unless it has already been killed.  Returns
   * %true on success; %false on failure.
   *