From: Yu Kuai <yukuai3@xxxxxxxxxx>
'conf->barrier' is protected by 'conf->resync_lock', reading
'conf->barrier' without holding the lock is wrong.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/raid10.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index cf452c25e1e5..9a28abd19709 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -936,8 +936,8 @@ static void flush_pending_writes(struct r10conf *conf)
static void raise_barrier(struct r10conf *conf, int force)
{
- BUG_ON(force && !conf->barrier);
spin_lock_irq(&conf->resync_lock);
+ BUG_ON(force && !conf->barrier);
/* Wait until no block IO is waiting (unless 'force') */
wait_event_lock_irq(conf->wait_barrier, force || !conf->nr_waiting,
--
2.31.1
