Re: [PATCH] blk-mq: remap queues when adding/removing hardware queues
From: Keith Busch <hidden>
Date: 2017-03-31 20:22:16
On Fri, Mar 31, 2017 at 11:59:24AM -0700, Omar Sandoval wrote:
quoted hunk ↗ jump to hunk
@@ -2629,11 +2639,12 @@ void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues) set->nr_hw_queues = nr_hw_queues; list_for_each_entry(q, &set->tag_list, tag_set_list) { blk_mq_realloc_hw_ctxs(set, q); - blk_mq_queue_reinit(q, cpu_online_mask); + blk_mq_queue_reinit(q, cpu_online_mask, true);
I think you want to call blk_mq_update_queue_map directly outside this loop rather than for each queue through blk_mq_queue_reinit. We only need to map the queues once per tagset rather than per queue.