UBUNTU: Ubuntu-4.10.0-37.41

[mirror_ubuntu-zesty-kernel.git] / mm / percpu.c

diff --git a/mm/percpu.c b/mm/percpu.c
index 0686f566d3470bb25cbe539ea19aeaec67bd4e72..232356a2d914b1e559cacbdae184cd517e5eabb3 100644 (file)
--- 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();