Merge branch 'sched/core' into locking/core

Required for the rtmutex/sched_deadline patches which depend on both
branches

1 files changed, 4 insertions, 1 deletions

diff --git a/mm/percpu.c b/mm/percpu.c
index bd7416752819..e0aa8ae7bde7 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1011,8 +1011,11 @@ area_found:
                 mutex_unlock(&pcpu_alloc_mutex);
         }
 
-        if (chunk != pcpu_reserved_chunk)
+        if (chunk != pcpu_reserved_chunk) {
+                spin_lock_irqsave(&pcpu_lock, flags);
                 pcpu_nr_empty_pop_pages -= occ_pages;
+                spin_unlock_irqrestore(&pcpu_lock, flags);
+        }
 
         if (pcpu_nr_empty_pop_pages < PCPU_EMPTY_POP_PAGES_LOW)
                 pcpu_schedule_balance_work();