diff options
| -rw-r--r-- | block/blk-mq.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 1e324a1..22682fb 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -108,8 +108,16 @@ static void blk_mq_queue_exit(struct request_queue *q) __percpu_counter_add(&q->mq_usage_counter, -1, 1000000); } -void blk_mq_drain_queue(struct request_queue *q) +/* + * Guarantee no request is in use, so we can change any data structure of + * the queue afterward. + */ +void blk_mq_freeze_queue(struct request_queue *q) { + spin_lock_irq(q->queue_lock); + q->mq_freeze_depth++; + spin_unlock_irq(q->queue_lock); + while (true) { s64 count; @@ -124,19 +132,6 @@ void blk_mq_drain_queue(struct request_queue *q) } } -/* - * Guarantee no request is in use, so we can change any data structure of - * the queue afterward. - */ -void blk_mq_freeze_queue(struct request_queue *q) -{ - spin_lock_irq(q->queue_lock); - q->mq_freeze_depth++; - spin_unlock_irq(q->queue_lock); - - blk_mq_drain_queue(q); -} - static void blk_mq_unfreeze_queue(struct request_queue *q) { bool wake = false; |
