On Wed, Dec 18, 2024 at 07:35:36PM +0530, Nilay Shroff wrote:
> One simple way I could think of would be updating queue_limit_xxx() APIs and
> then use it,
>
> queue_limits_start_update(struct request_queue *q, bool freeze)
> {
> ...
> mutex_lock(&q->limits_lock);
> if(freeze)
> blk_mq_freeze_queue(q);
> ...
Conditional locking (and the freeze sort of is a lock) is always a bad
idea. But we can do a lower level no-free API or this use case.
