Move hctx cpuhp add/del out of queue freezing for not connecting freeze
lock with cpuhp locks, then lockdep warning can be avoided.
This way is safe because both needn't queue to be frozen and scheduler
switch isn't allowed.
Reviewed-by: Nilay Shroff <nilay@xxxxxxxxxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
block/blk-mq.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index e08eda094ae7..add653f84797 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -4964,7 +4964,7 @@ static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
fallback:
blk_mq_update_queue_map(set);
list_for_each_entry(q, &set->tag_list, tag_set_list) {
- blk_mq_realloc_hw_ctxs(set, q);
+ __blk_mq_realloc_hw_ctxs(set, q);
if (q->nr_hw_queues != set->nr_hw_queues) {
int i = prev_nr_hw_queues;
@@ -4988,6 +4988,9 @@ static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
list_for_each_entry(q, &set->tag_list, tag_set_list) {
blk_mq_sysfs_register_hctxs(q);
blk_mq_debugfs_register_hctxs(q);
+
+ blk_mq_remove_hw_queues_cpuhp(q);
+ blk_mq_add_hw_queues_cpuhp(q);
}
memalloc_noio_restore(memflags);
--
2.47.0
