blk_mq_realloc_tag_set_tags will update set->nr_hw_queues, so
save old set->nr_hw_queues before call this function.
Since set->nr_hw_queues has been updated in blk_mq_realloc_tag_set_tags,
no need set it again.
Signed-off-by: Weiping Zhang <zhangweiping@xxxxxxxxxxxxxx>
---
block/blk-mq.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index f6291ceedee4..c86d1c81d3d6 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3342,12 +3342,11 @@ 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:
list_for_each_entry(q, &set->tag_list, tag_set_list) {
--
2.18.1
