diff options
| author | Weiping Zhang <zhangweiping@didiglobal.com> | 2020-05-07 21:03:56 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-05-09 16:15:12 -0600 |
| commit | a2584e43f5672e2715c0c5ca28ccff3b9f381581 (patch) | |
| tree | 39890353cea4889c86a35f3082e9ba43762c328e /block | |
| parent | 2e194422f1eb4cdf5d6697bcfe0bbaf3059bbb5e (diff) | |
block: save previous hardware queue count before udpate
blk_mq_realloc_tag_set_tags will update set->nr_hw_queues, so
save old set->nr_hw_queues before call this function.
Signed-off-by: Weiping Zhang <zhangweiping@didiglobal.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index e9643b0d6860..9e518aefc04b 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3358,11 +3358,11 @@ static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, blk_mq_sysfs_unregister(q); } + prev_nr_hw_queues = set->nr_hw_queues; if (blk_mq_realloc_tag_set_tags(set, set->nr_hw_queues, nr_hw_queues) < 0) goto reregister; - prev_nr_hw_queues = set->nr_hw_queues; set->nr_hw_queues = nr_hw_queues; blk_mq_update_queue_map(set); fallback: |