block: Avoid that sparse complains about context imbalance in __wbt_w…

…ait() This patch does not change any functionality. Fixes: e34cbd3 ("blk-wbt: add general throttling mechanism") Signed-off-by: Bart Van Assche <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
oohal · Jan 2, 2017 · 9eca535 · 9eca535
1 parent f2e0a0b
commit 9eca535
Showing 1 changed file with 6 additions and 5 deletions.
diff --git 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);