[PATCH 3.18 075/124] percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Tahsin Erdogan commit 320661b08dd6f1746d5c7ab4eb435ec64b97cd45 upstream. Update to pcpu_nr_empty_pop_pages in pcpu_alloc() is currently done without holding pcpu_lock. This

[PATCH 3.18 075/124] percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Tahsin Erdogan commit 320661b08dd6f1746d5c7ab4eb435ec64b97cd45 upstream. Update to pcpu_nr_empty_pop_pages in pcpu_alloc() is currently done without holding pcpu_lock. This can lead to bad