The first version of blk_mq_quiesce_queue() that was posted on
the linux-block mailing list waited for ongoing .queue_rq()
calls but did not stop the request queue. The current version
however stops the request queue. Since the comment above that
function still reflects the old behavior, update that comment.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxxx>
Cc: Omar Sandoval <osandov@xxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxx>
---
block/blk-mq.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 1fcc20df1a4e..b230038eba1d 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -155,12 +155,11 @@ void blk_mq_unfreeze_queue(struct request_queue *q)
EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue);
/**
- * blk_mq_quiesce_queue() - wait until all ongoing queue_rq calls have finished
+ * blk_mq_quiesce_queue() - stop a queue and wait for ongoing queue_rq calls
* @q: request queue.
*
* Note: this function does not prevent that the struct request end_io()
- * callback function is invoked. Additionally, it is not prevented that
- * new queue_rq() calls occur unless the queue has been stopped first.
+ * callback function is invoked.
*/
void blk_mq_quiesce_queue(struct request_queue *q)
{
--
2.12.2
