block: Avoid that sparse complains about context imbalance in __wbt_wait()

This patch does not change any functionality.

Fixes: e34cbd307477 ("blk-wbt: add general throttling mechanism")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index fd28c2806406..f0a9c07b4c7a 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -544,6 +544,8 @@ static inline bool may_queue(struct rq_wb *rwb, struct rq_wait *rqw,
  * the timer to kick off queuing again.
  */
 static void __wbt_wait(struct rq_wb *rwb, unsigned long rw, spinlock_t *lock)
+        __releases(lock)
+        __acquires(lock)
 {
         struct rq_wait *rqw = get_rq_wait(rwb, current_is_kswapd());
         DEFINE_WAIT(wait);
@@ -558,13 +560,12 @@ static void __wbt_wait(struct rq_wb *rwb, unsigned long rw, spinlock_t *lock)
                 if (may_queue(rwb, rqw, &wait, rw))
                         break;
 
-                if (lock)
+                if (lock) {
                         spin_unlock_irq(lock);
-
-                io_schedule();
-
-                if (lock)
+                        io_schedule();
                         spin_lock_irq(lock);
+                } else
+                        io_schedule();
         } while (1);
 
         finish_wait(&rqw->wait, &wait);