diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 2864e191cc86..28bf667bfe09 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -944,6 +944,26 @@ void blk_mq_run_hw_queues(struct request_queue *q, bool async) } EXPORT_SYMBOL(blk_mq_run_hw_queues); +/** + * blk_mq_queue_stopped() - check whether one or more hctxs have been stopped + * @q: request queue. + * + * The caller is responsible for serializing this function against + * blk_mq_{start,stop}_hw_queue(). + */ +bool blk_mq_queue_stopped(struct request_queue *q) +{ + struct blk_mq_hw_ctx *hctx; + int i; + + queue_for_each_hw_ctx(q, hctx, i) + if (blk_mq_hctx_stopped(hctx)) + return true; + + return false; +} +EXPORT_SYMBOL(blk_mq_queue_stopped); + void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx) { cancel_work(&hctx->run_work); |