blk-mq: update comments on blk_mq_quiesce_queue()

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Actually what we want to get from blk_mq_quiesce_queue()
isn't only to wait for completion of all ongoing .queue_rq().

In the typical context of canceling requests, we need to
make sure that the following is done in the dispatch path
before starting to cancel requests:

	- failed dispatched request is finished
	- busy dispatched request is requeued, and the STARTED
	flag is cleared

So update comment to keep code, doc and our expection consistent.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Ming Lei 2017-06-06 23:22:07 +08:00 • committed by Jens Axboe

parent f4560ffe8c

commit 69e07c4adb

1 changed files with 4 additions and 3 deletions

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block/blk-mq.c

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