[PATCH 2/4] locking/rwbase: Properly match set_and_save_state() to restore_state()

From: Peter Zijlstra
Date: Thu Sep 09 2021 - 07:05:10 EST


Noticed while looking at the readers race.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
kernel/locking/rwbase_rt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/locking/rwbase_rt.c
+++ b/kernel/locking/rwbase_rt.c
@@ -220,7 +220,7 @@ static int __sched rwbase_write_lock(str
for (; atomic_read(&rwb->readers);) {
/* Optimized out for rwlocks */
if (rwbase_signal_pending_state(state, current)) {
- __set_current_state(TASK_RUNNING);
+ rwbase_restore_current_state();
__rwbase_write_unlock(rwb, 0, flags);
return -EINTR;
}