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-rw-r--r--include/linux/percpu-rwsem.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h
index 250a4acddb2..bd1e86071e5 100644
--- a/include/linux/percpu-rwsem.h
+++ b/include/linux/percpu-rwsem.h
@@ -13,7 +13,7 @@ struct percpu_rw_semaphore {
};
#define light_mb() barrier()
-#define heavy_mb() synchronize_sched()
+#define heavy_mb() synchronize_sched_expedited()
static inline void percpu_down_read(struct percpu_rw_semaphore *p)
{
@@ -51,7 +51,7 @@ static inline void percpu_down_write(struct percpu_rw_semaphore *p)
{
mutex_lock(&p->mtx);
p->locked = true;
- synchronize_sched(); /* make sure that all readers exit the rcu_read_lock_sched region */
+ synchronize_sched_expedited(); /* make sure that all readers exit the rcu_read_lock_sched region */
while (__percpu_count(p->counters))
msleep(1);
heavy_mb(); /* C, between read of p->counter and write to data, paired with B */