summaryrefslogtreecommitdiff
path: root/kernel/locking/rwsem.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/locking/rwsem.c')
-rw-r--r--kernel/locking/rwsem.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index d3ce7c6c42a6..571938887cc8 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -1073,8 +1073,10 @@ queue:
/* wait to be given the lock */
while (true) {
set_current_state(state);
- if (!waiter.task)
+ if (!smp_load_acquire(&waiter.task)) {
+ /* Orders against rwsem_mark_wake()'s smp_store_release() */
break;
+ }
if (signal_pending_state(state, current)) {
raw_spin_lock_irq(&sem->wait_lock);
if (waiter.task)