dm_stat_need_rcu_barrier 19 drivers/md/dm-stats.c static int dm_stat_need_rcu_barrier; dm_stat_need_rcu_barrier 436 drivers/md/dm-stats.c WRITE_ONCE(dm_stat_need_rcu_barrier, 1); dm_stat_need_rcu_barrier 1196 drivers/md/dm-stats.c dm_stat_need_rcu_barrier = 0; dm_stat_need_rcu_barrier 1202 drivers/md/dm-stats.c if (dm_stat_need_rcu_barrier)