unsigned long fflags = q->queue_flags; /* may change, cache */
unsigned int policy = blk_flush_policy(fflags, rq);
struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);
+ struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
/*
* @policy now records what operations need to be done. Adjust
*/
if ((policy & REQ_FSEQ_DATA) &&
!(policy & (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH))) {
- blk_mq_request_bypass_insert(rq, false, true);
+ blk_mq_request_bypass_insert(rq, false);
+ blk_mq_run_hw_queue(hctx, false);
return;
}
if (rq->rq_flags & RQF_DONTPREP) {
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
- blk_mq_request_bypass_insert(rq, false, false);
+ blk_mq_request_bypass_insert(rq, false);
} else if (rq->rq_flags & RQF_SOFTBARRIER) {
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
* blk_mq_request_bypass_insert - Insert a request at dispatch list.
* @rq: Pointer to request to be inserted.
* @at_head: true if the request should be inserted at the head of the list.
- * @run_queue: If we should run the hardware queue after inserting the request.
*
* Should only be used carefully, when the caller knows we want to
* bypass a potential IO scheduler on the target device.
*/
-void blk_mq_request_bypass_insert(struct request *rq, bool at_head,
- bool run_queue)
+void blk_mq_request_bypass_insert(struct request *rq, bool at_head)
{
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
else
list_add_tail(&rq->queuelist, &hctx->dispatch);
spin_unlock(&hctx->lock);
-
- if (run_queue)
- blk_mq_run_hw_queue(hctx, false);
}
static void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx,
* and it is added to the scheduler queue, there is no chance to
* dispatch it given we prioritize requests in hctx->dispatch.
*/
- blk_mq_request_bypass_insert(rq, at_head, false);
+ blk_mq_request_bypass_insert(rq, at_head);
} else if (rq->rq_flags & RQF_FLUSH_SEQ) {
/*
* Firstly normal IO request is inserted to scheduler queue or
* Simply queue flush rq to the front of hctx->dispatch so that
* intensive flush workloads can benefit in case of NCQ HW.
*/
- blk_mq_request_bypass_insert(rq, true, false);
+ blk_mq_request_bypass_insert(rq, true);
} else if (q->elevator) {
LIST_HEAD(list);
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
- blk_mq_request_bypass_insert(rq, false, true);
+ blk_mq_request_bypass_insert(rq, false);
+ blk_mq_run_hw_queue(hctx, false);
break;
default:
blk_mq_end_request(rq, ret);
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
- blk_mq_request_bypass_insert(rq, false, true);
+ blk_mq_request_bypass_insert(rq, false);
+ blk_mq_run_hw_queue(hctx, false);
goto out;
default:
blk_mq_end_request(rq, ret);
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
- blk_mq_request_bypass_insert(rq, false,
- list_empty(list));
+ blk_mq_request_bypass_insert(rq, false);
+ if (list_empty(list))
+ blk_mq_run_hw_queue(hctx, false);
goto out;
default:
blk_mq_end_request(rq, ret);