On 6/21/23 06:22, Ming Lei wrote:
percpu_ref_get(&this_hctx->queue->q_usage_counter);
/* passthrough requests should never be issued to the I/O scheduler */
- if (this_hctx->queue->elevator && !is_passthrough) {
+ if (is_passthrough) {
+ spin_lock(&this_hctx->lock);
+ list_splice_tail_init(&list, &this_hctx->dispatch);
+ spin_unlock(&this_hctx->lock);
+ blk_mq_run_hw_queue(this_hctx, from_sched);
+ } else if (this_hctx->queue->elevator) {
this_hctx->queue->elevator->type->ops.insert_requests(this_hctx,
&list, 0);
blk_mq_run_hw_queue(this_hctx, from_sched);
The code change in this patch looks fine to me. However, with this patch
applied the code and the source code comment just above the modified are
now out of sync :-(
Bart.
