[PATCH] scx: set p->scx.ops_state using atomic_long_set_release

[Changwoo Min]

p->scx.ops_state should be updated using the release semantics,
atomic_long_set_release(), because it is read using
atomic_long_read_acquire() at ops_dequeue() and wait_ops_state().
---
 kernel/sched/ext.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 53ee906aa2b6..3a40ca2007b6 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -881,7 +881,7 @@ static void do_enqueue_task(struct rq *rq, struct task_struct *p, u64 enq_flags,
 	qseq = rq->scx.ops_qseq++ << SCX_OPSS_QSEQ_SHIFT;
 
 	WARN_ON_ONCE(atomic_long_read(&p->scx.ops_state) != SCX_OPSS_NONE);
-	atomic_long_set(&p->scx.ops_state, SCX_OPSS_QUEUEING | qseq);
+	atomic_long_set_release(&p->scx.ops_state, SCX_OPSS_QUEUEING | qseq);
 
 	ddsp_taskp = this_cpu_ptr(&direct_dispatch_task);
 	WARN_ON_ONCE(*ddsp_taskp);
-- 
2.43.0