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-rw-r--r--block/blk-mq.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3f18cff80050..98a18609755e 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1401,6 +1401,22 @@ void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
blk_mq_hctx_mark_pending(hctx, ctx);
}
+/*
+ * 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)
+{
+ struct blk_mq_ctx *ctx = rq->mq_ctx;
+ struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(rq->q, ctx->cpu);
+
+ spin_lock(&hctx->lock);
+ list_add_tail(&rq->queuelist, &hctx->dispatch);
+ spin_unlock(&hctx->lock);
+
+ blk_mq_run_hw_queue(hctx, false);
+}
+
void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
struct list_head *list)