diff options
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 8da2c04bb88f..a5e66a7a3506 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -81,6 +81,15 @@ void blk_mq_freeze_queue_wait(struct request_queue *q) } EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_wait); +int blk_mq_freeze_queue_wait_timeout(struct request_queue *q, + unsigned long timeout) +{ + return wait_event_timeout(q->mq_freeze_wq, + percpu_ref_is_zero(&q->q_usage_counter), + timeout); +} +EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_wait_timeout); + /* * Guarantee no request is in use, so we can change any data structure of * the queue afterward. |