Let drivers prevent entering a queue that isn't available.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
wake_up_all(&q->mq_freeze_wq);
}
wake_up_all(&q->mq_freeze_wq);
}
-static void blk_mq_freeze_queue_start(struct request_queue *q)
+void blk_mq_freeze_queue_start(struct request_queue *q)
blk_mq_run_queues(q, false);
}
}
blk_mq_run_queues(q, false);
}
}
+EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_start);
static void blk_mq_freeze_queue_wait(struct request_queue *q)
{
static void blk_mq_freeze_queue_wait(struct request_queue *q)
{
blk_mq_freeze_queue_wait(q);
}
blk_mq_freeze_queue_wait(q);
}
-static void blk_mq_unfreeze_queue(struct request_queue *q)
+void blk_mq_unfreeze_queue(struct request_queue *q)
wake_up_all(&q->mq_freeze_wq);
}
}
wake_up_all(&q->mq_freeze_wq);
}
}
+EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
{
bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
{
void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_tag_busy_iter(struct blk_mq_hw_ctx *hctx, busy_iter_fn *fn,
void *priv);
void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_tag_busy_iter(struct blk_mq_hw_ctx *hctx, busy_iter_fn *fn,
void *priv);
+void blk_mq_unfreeze_queue(struct request_queue *q);
+void blk_mq_freeze_queue_start(struct request_queue *q);
/*
* Driver command data is immediately after the request. So subtract request
/*
* Driver command data is immediately after the request. So subtract request